Adding upstream version 110.0.1.upstream/110.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 2286 insertions, 0 deletions

diff --git a/nsprpub/pr/tests/socket.c b/nsprpub/pr/tests/socket.c
new file mode 100644
index 0000000000..232898f69e
--- /dev/null
+++ b/nsprpub/pr/tests/socket.c
@@ -0,0 +1,2286 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/***********************************************************************
+**
+** Name: socket.c
+**
+** Description: Test socket functionality.
+**
+** Modification History:
+*/
+#include "primpl.h"
+
+#include "plgetopt.h"
+
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+#ifdef XP_UNIX
+#include <sys/mman.h>
+#endif
+#if defined(_PR_PTHREADS)
+#include <pthread.h>
+#endif
+
+#ifdef WIN32
+#include <process.h>
+#endif
+
+static int _debug_on = 0;
+static int test_cancelio = 0;
+
+#include "obsolete/prsem.h"
+
+#ifdef XP_PC
+#define mode_t int
+#endif
+
+#define DPRINTF(arg) if (_debug_on) printf arg
+
+#ifdef XP_PC
+char *TEST_DIR = "prdir";
+char *SMALL_FILE_NAME = "prsmallf";
+char *LARGE_FILE_NAME = "prlargef";
+#else
+char *TEST_DIR = "./tmp-prsocket_test_dir";
+char *SMALL_FILE_NAME = "./tmp-prsocket_test_dir/small_file";
+char *LARGE_FILE_NAME = "./tmp-prsocket_test_dir/large_file";
+#endif
+#define SMALL_FILE_SIZE             (3 * 1024)        /* 3 KB        */
+#define SMALL_FILE_OFFSET_1         (512)
+#define SMALL_FILE_LEN_1            (1 * 1024)        /* 1 KB        */
+#define SMALL_FILE_OFFSET_2         (75)
+#define SMALL_FILE_LEN_2            (758)
+#define SMALL_FILE_OFFSET_3         (1024)
+#define SMALL_FILE_LEN_3            (SMALL_FILE_SIZE - SMALL_FILE_OFFSET_3)
+#define SMALL_FILE_HEADER_SIZE      (64)            /* 64 bytes    */
+#define SMALL_FILE_TRAILER_SIZE     (128)           /* 128 bytes    */
+
+#define LARGE_FILE_SIZE             (3 * 1024 * 1024)    /* 3 MB        */
+#define LARGE_FILE_OFFSET_1         (0)
+#define LARGE_FILE_LEN_1            (2 * 1024 * 1024)    /* 2 MB        */
+#define LARGE_FILE_OFFSET_2         (64)
+#define LARGE_FILE_LEN_2            (1 * 1024 * 1024 + 75)
+#define LARGE_FILE_OFFSET_3         (2 * 1024 * 1024 - 128)
+#define LARGE_FILE_LEN_3            (LARGE_FILE_SIZE - LARGE_FILE_OFFSET_3)
+#define LARGE_FILE_OFFSET_4         PR_GetPageSize()
+#define LARGE_FILE_LEN_4            769
+#define LARGE_FILE_HEADER_SIZE      (512)
+#define LARGE_FILE_TRAILER_SIZE     (64)
+
+#define    BUF_DATA_SIZE    (2 * 1024)
+#define TCP_MESG_SIZE    1024
+/*
+ * set UDP datagram size small enough that datagrams sent to a port on the
+ * local host will not be lost
+ */
+#define UDP_DGRAM_SIZE            128
+#define NUM_TCP_CLIENTS            5    /* for a listen queue depth of 5 */
+#define NUM_UDP_CLIENTS            10
+
+#define NUM_TRANSMITFILE_CLIENTS    4
+
+#define NUM_TCP_CONNECTIONS_PER_CLIENT    5
+#define NUM_TCP_MESGS_PER_CONNECTION    10
+#define NUM_UDP_DATAGRAMS_PER_CLIENT    5
+#define TCP_SERVER_PORT            10000
+#define UDP_SERVER_PORT            TCP_SERVER_PORT
+#define SERVER_MAX_BIND_COUNT        100
+
+#ifdef WINCE
+#define perror(s)
+#endif
+
+static PRInt32 num_tcp_clients = NUM_TCP_CLIENTS;
+static PRInt32 num_udp_clients = NUM_UDP_CLIENTS;
+static PRInt32 num_transmitfile_clients = NUM_TRANSMITFILE_CLIENTS;
+static PRInt32 num_tcp_connections_per_client = NUM_TCP_CONNECTIONS_PER_CLIENT;
+static PRInt32 tcp_mesg_size = TCP_MESG_SIZE;
+static PRInt32 num_tcp_mesgs_per_connection = NUM_TCP_MESGS_PER_CONNECTION;
+static PRInt32 num_udp_datagrams_per_client = NUM_UDP_DATAGRAMS_PER_CLIENT;
+static PRInt32 udp_datagram_size = UDP_DGRAM_SIZE;
+
+static PRInt32 thread_count;
+PRUint16 server_domain = PR_AF_INET, client_domain = PR_AF_INET;
+
+/* an I/O layer that uses the emulated senfile method */
+static PRDescIdentity emuSendFileIdentity;
+static PRIOMethods emuSendFileMethods;
+
+int failed_already=0;
+typedef struct buffer {
+    char    data[BUF_DATA_SIZE];
+} buffer;
+
+PRNetAddr tcp_server_addr, udp_server_addr;
+
+typedef struct Serve_Client_Param {
+    PRFileDesc *sockfd;    /* socket to read from/write to    */
+    PRInt32    datalen;    /* bytes of data transfered in each read/write */
+} Serve_Client_Param;
+
+typedef struct Server_Param {
+    PRSemaphore *addr_sem;    /* sem to post on, after setting up the address */
+    PRMonitor *exit_mon;    /* monitor to signal on exit            */
+    PRInt32 *exit_counter;    /* counter to decrement, before exit        */
+    PRInt32    datalen;    /* bytes of data transfered in each read/write    */
+} Server_Param;
+
+
+typedef struct Client_Param {
+    PRNetAddr server_addr;
+    PRMonitor *exit_mon;    /* monitor to signal on exit */
+    PRInt32 *exit_counter;    /* counter to decrement, before exit */
+    PRInt32    datalen;
+    PRInt32    udp_connect;    /* if set clients connect udp sockets */
+} Client_Param;
+
+/* the sendfile method in emuSendFileMethods */
+static PRInt32 PR_CALLBACK
+emu_SendFile(PRFileDesc *sd, PRSendFileData *sfd,
+             PRTransmitFileFlags flags, PRIntervalTime timeout)
+{
+    return PR_EmulateSendFile(sd, sfd, flags, timeout);
+}
+
+/* the transmitfile method in emuSendFileMethods */
+static PRInt32 PR_CALLBACK
+emu_TransmitFile(PRFileDesc *sd, PRFileDesc *fd, const void *headers,
+                 PRInt32 hlen, PRTransmitFileFlags flags, PRIntervalTime timeout)
+{
+    PRSendFileData sfd;
+
+    sfd.fd = fd;
+    sfd.file_offset = 0;
+    sfd.file_nbytes = 0;
+    sfd.header = headers;
+    sfd.hlen = hlen;
+    sfd.trailer = NULL;
+    sfd.tlen = 0;
+    return emu_SendFile(sd, &sfd, flags, timeout);
+}
+
+/*
+ * readn
+ *    read data from sockfd into buf
+ */
+static PRInt32
+readn(PRFileDesc *sockfd, char *buf, int len)
+{
+    int rem;
+    int bytes;
+    int offset = 0;
+    int err;
+    PRIntervalTime timeout = PR_INTERVAL_NO_TIMEOUT;
+
+    if (test_cancelio) {
+        timeout = PR_SecondsToInterval(2);
+    }
+
+    for (rem=len; rem; offset += bytes, rem -= bytes) {
+        DPRINTF(("thread = 0x%lx: calling PR_Recv, bytes = %d\n",
+                 PR_GetCurrentThread(), rem));
+retry:
+        bytes = PR_Recv(sockfd, buf + offset, rem, 0,
+                        timeout);
+        DPRINTF(("thread = 0x%lx: returning from PR_Recv, bytes = %d\n",
+                 PR_GetCurrentThread(), bytes));
+        if (bytes < 0) {
+#ifdef WINNT
+            printf("PR_Recv: error = %d oserr = %d\n",(err = PR_GetError()),
+                   PR_GetOSError());
+            if ((test_cancelio) && (err == PR_IO_TIMEOUT_ERROR)) {
+                if (PR_NT_CancelIo(sockfd) != PR_SUCCESS) {
+                    printf("PR_NT_CancelIO: error = %d\n",PR_GetError());
+                }
+                timeout = PR_INTERVAL_NO_TIMEOUT;
+                goto retry;
+            }
+#endif
+            return -1;
+        }
+    }
+    return len;
+}
+
+/*
+ * writen
+ *    write data from buf to sockfd
+ */
+static PRInt32
+writen(PRFileDesc *sockfd, char *buf, int len)
+{
+    int rem;
+    int bytes;
+    int offset = 0;
+
+    for (rem=len; rem; offset += bytes, rem -= bytes) {
+        DPRINTF(("thread = 0x%lx: calling PR_Send, bytes = %d\n",
+                 PR_GetCurrentThread(), rem));
+        bytes = PR_Send(sockfd, buf + offset, rem, 0,
+                        PR_INTERVAL_NO_TIMEOUT);
+        DPRINTF(("thread = 0x%lx: returning from PR_Send, bytes = %d\n",
+                 PR_GetCurrentThread(), bytes));
+        if (bytes <= 0) {
+            return -1;
+        }
+    }
+    return len;
+}
+
+/*
+ * Serve_Client
+ *    Thread, started by the server, for serving a client connection.
+ *    Reads data from socket and writes it back, unmodified, and
+ *    closes the socket
+ */
+static void PR_CALLBACK
+Serve_Client(void *arg)
+{
+    Serve_Client_Param *scp = (Serve_Client_Param *) arg;
+    PRFileDesc *sockfd;
+    buffer *in_buf;
+    PRInt32 bytes, j;
+
+    sockfd = scp->sockfd;
+    bytes = scp->datalen;
+    in_buf = PR_NEW(buffer);
+    if (in_buf == NULL) {
+        fprintf(stderr,"prsocket_test: failed to alloc buffer struct\n");
+        failed_already=1;
+        goto exit;
+    }
+
+
+    for (j = 0; j < num_tcp_mesgs_per_connection; j++) {
+        /*
+         * Read data from client and send it back to the client unmodified
+         */
+        if (readn(sockfd, in_buf->data, bytes) < bytes) {
+            fprintf(stderr,"prsocket_test: ERROR - Serve_Client:readn\n");
+            failed_already=1;
+            goto exit;
+        }
+        /* Shutdown only RCV will cause error on Symbian OS */
+        /*
+         * shutdown reads, after the last read
+         */
+        if (j == num_tcp_mesgs_per_connection - 1)
+            if (PR_Shutdown(sockfd, PR_SHUTDOWN_RCV) < 0) {
+                fprintf(stderr,"prsocket_test: ERROR - PR_Shutdown\n");
+            }
+        DPRINTF(("Serve_Client [0x%lx]: inbuf[0] = 0x%lx\n",PR_GetCurrentThread(),
+                 (*((int *) in_buf->data))));
+        if (writen(sockfd, in_buf->data, bytes) < bytes) {
+            fprintf(stderr,"prsocket_test: ERROR - Serve_Client:writen\n");
+            failed_already=1;
+            goto exit;
+        }
+    }
+    /*
+     * shutdown reads and writes
+     */
+    if (PR_Shutdown(sockfd, PR_SHUTDOWN_BOTH) < 0) {
+        fprintf(stderr,"prsocket_test: ERROR - PR_Shutdown\n");
+        failed_already=1;
+    }
+
+exit:
+    PR_Close(sockfd);
+    if (in_buf) {
+        PR_DELETE(in_buf);
+    }
+}
+
+PRThread* create_new_thread(PRThreadType type,
+                            void (*start)(void *arg),
+                            void *arg,
+                            PRThreadPriority priority,
+                            PRThreadScope scope,
+                            PRThreadState state,
+                            PRUint32 stackSize, PRInt32 index)
+{
+    PRInt32 native_thread = 0;
+
+    PR_ASSERT(state == PR_UNJOINABLE_THREAD);
+#if defined(_PR_PTHREADS) || defined(WIN32)
+    switch(index %  4) {
+        case 0:
+            scope = (PR_LOCAL_THREAD);
+            break;
+        case 1:
+            scope = (PR_GLOBAL_THREAD);
+            break;
+        case 2:
+            scope = (PR_GLOBAL_BOUND_THREAD);
+            break;
+        case 3:
+            native_thread = 1;
+            break;
+        default:
+            PR_NOT_REACHED("Invalid scope");
+            break;
+    }
+    if (native_thread) {
+#if defined(_PR_PTHREADS)
+        pthread_t tid;
+        if (!pthread_create(&tid, NULL, (void * (*)(void *)) start, arg)) {
+            return((PRThread *) tid);
+        }
+        else {
+            return (NULL);
+        }
+#else
+        HANDLE thandle;
+        unsigned tid;
+
+        thandle = (HANDLE) _beginthreadex(
+                      NULL,
+                      stackSize,
+                      (unsigned (__stdcall *)(void *))start,
+                      arg,
+                      STACK_SIZE_PARAM_IS_A_RESERVATION,
+                      &tid);
+        return((PRThread *) thandle);
+#endif
+    } else {
+        return(PR_CreateThread(type,start,arg,priority,scope,state,stackSize));
+    }
+#else
+    return(PR_CreateThread(type,start,arg,priority,scope,state,stackSize));
+#endif
+}
+
+/*
+ * TCP Server
+ *    Server Thread
+ *    Bind an address to a socket and listen for incoming connections
+ *    Start a Serve_Client thread for each incoming connection.
+ */
+static void PR_CALLBACK
+TCP_Server(void *arg)
+{
+    PRThread *t;
+    Server_Param *sp = (Server_Param *) arg;
+    Serve_Client_Param *scp;
+    PRFileDesc *sockfd, *newsockfd;
+    PRNetAddr netaddr;
+    PRInt32 i;
+    /*
+     * Create a tcp socket
+     */
+    if ((sockfd = PR_OpenTCPSocket(server_domain)) == NULL) {
+        fprintf(stderr,"prsocket_test: PR_NewTCPSocket failed\n");
+        goto exit;
+    }
+    memset(&netaddr, 0, sizeof(netaddr));
+
+    if (PR_SetNetAddr(PR_IpAddrAny, server_domain, TCP_SERVER_PORT,
+                      &netaddr) == PR_FAILURE) {
+        fprintf(stderr,"prsocket_test: PR_SetNetAddr failed\n");
+        goto exit;
+    }
+    /*
+     * try a few times to bind server's address, if addresses are in
+     * use
+     */
+    i = 0;
+
+    while (PR_Bind(sockfd, &netaddr) < 0) {
+        if (PR_GetError() == PR_ADDRESS_IN_USE_ERROR) {
+            netaddr.inet.port += 2;
+            if (i++ < SERVER_MAX_BIND_COUNT) {
+                continue;
+            }
+        }
+        fprintf(stderr,"prsocket_test: ERROR - PR_Bind failed\n");
+        perror("PR_Bind");
+        failed_already=1;
+        goto exit;
+    }
+
+    if (PR_Listen(sockfd, 32) < 0) {
+        fprintf(stderr,"prsocket_test: ERROR - PR_Listen failed\n");
+        failed_already=1;
+        goto exit;
+    }
+
+    if (PR_GetSockName(sockfd, &netaddr) < 0) {
+        fprintf(stderr,"prsocket_test: ERROR - PR_GetSockName failed\n");
+        failed_already=1;
+        goto exit;
+    }
+
+    DPRINTF(("TCP_Server: PR_BIND netaddr.inet.ip = 0x%lx, netaddr.inet.port = %d\n",
+             netaddr.inet.ip, netaddr.inet.port));
+    if (PR_SetNetAddr(PR_IpAddrLoopback, client_domain,
+                      PR_ntohs(PR_NetAddrInetPort(&netaddr)),
+                      &tcp_server_addr) == PR_FAILURE) {
+        fprintf(stderr,"prsocket_test: PR_SetNetAddr failed\n");
+        goto exit;
+    }
+    if ((client_domain == PR_AF_INET6) && (server_domain == PR_AF_INET))
+        PR_ConvertIPv4AddrToIPv6(PR_htonl(INADDR_LOOPBACK),
+                                 &tcp_server_addr.ipv6.ip);
+
+    /*
+     * Wake up parent thread because server address is bound and made
+     * available in the global variable 'tcp_server_addr'
+     */
+    PR_PostSem(sp->addr_sem);
+
+    for (i = 0; i < (num_tcp_clients * num_tcp_connections_per_client); i++) {
+        /* test both null and non-null 'addr' argument to PR_Accept */
+        PRNetAddr *addrp = (i%2 ? &netaddr: NULL);
+
+        DPRINTF(("TCP_Server: Accepting connection\n"));
+        if ((newsockfd = PR_Accept(sockfd, addrp,
+                                   PR_INTERVAL_NO_TIMEOUT)) == NULL) {
+            fprintf(stderr,"prsocket_test: ERROR - PR_Accept failed\n");
+            goto exit;
+        }
+        DPRINTF(("TCP_Server: Accepted connection\n"));
+        scp = PR_NEW(Serve_Client_Param);
+        if (scp == NULL) {
+            fprintf(stderr,"prsocket_test: PR_NEW failed\n");
+            goto exit;
+        }
+
+        /*
+         * Start a Serve_Client thread for each incoming connection
+         */
+        scp->sockfd = newsockfd;
+        scp->datalen = sp->datalen;
+
+        t = create_new_thread(PR_USER_THREAD,
+                              Serve_Client, (void *)scp,
+                              PR_PRIORITY_NORMAL,
+                              PR_LOCAL_THREAD,
+                              PR_UNJOINABLE_THREAD,
+                              0, i);
+        if (t == NULL) {
+            fprintf(stderr,"prsocket_test: PR_CreateThread failed\n");
+            failed_already=1;
+            goto exit;
+        }
+        DPRINTF(("TCP_Server: Created Serve_Client = 0x%lx\n", t));
+    }
+
+exit:
+    if (sockfd) {
+        PR_Close(sockfd);
+    }
+
+    /*
+     * Decrement exit_counter and notify parent thread
+     */
+
+    PR_EnterMonitor(sp->exit_mon);
+    --(*sp->exit_counter);
+    PR_Notify(sp->exit_mon);
+    PR_ExitMonitor(sp->exit_mon);
+    DPRINTF(("TCP_Server [0x%lx] exiting\n", PR_GetCurrentThread()));
+}
+
+/*
+ * UDP Server
+ *    Server Thread
+ *    Bind an address to a socket, read data from clients and send data
+ *    back to clients
+ */
+static void PR_CALLBACK
+UDP_Server(void *arg)
+{
+    Server_Param *sp = (Server_Param *) arg;
+    PRFileDesc *sockfd;
+    buffer *in_buf;
+    PRNetAddr netaddr;
+    PRInt32 bytes, i, rv = 0;
+
+
+    bytes = sp->datalen;
+    /*
+     * Create a udp socket
+     */
+    if ((sockfd = PR_OpenUDPSocket(server_domain)) == NULL) {
+        fprintf(stderr,"prsocket_test: PR_NewUDPSocket failed\n");
+        failed_already=1;
+        return;
+    }
+    memset(&netaddr, 0, sizeof(netaddr));
+    if (PR_SetNetAddr(PR_IpAddrAny, server_domain, UDP_SERVER_PORT,
+                      &netaddr) == PR_FAILURE) {
+        fprintf(stderr,"prsocket_test: PR_SetNetAddr failed\n");
+        failed_already=1;
+        return;
+    }
+    /*
+     * try a few times to bind server's address, if addresses are in
+     * use
+     */
+    i = 0;
+    while (PR_Bind(sockfd, &netaddr) < 0) {
+        if (PR_GetError() == PR_ADDRESS_IN_USE_ERROR) {
+            netaddr.inet.port += 2;
+            if (i++ < SERVER_MAX_BIND_COUNT) {
+                continue;
+            }
+        }
+        fprintf(stderr,"prsocket_test: ERROR - PR_Bind failed\n");
+        perror("PR_Bind");
+        failed_already=1;
+        return;
+    }
+
+    if (PR_GetSockName(sockfd, &netaddr) < 0) {
+        fprintf(stderr,"prsocket_test: ERROR - PR_GetSockName failed\n");
+        failed_already=1;
+        return;
+    }
+
+    DPRINTF(("PR_Bind: UDP Server netaddr.inet.ip = 0x%lx, netaddr.inet.port = %d\n",
+             netaddr.inet.ip, netaddr.inet.port));
+    /*
+     * We can't use the IP address returned by PR_GetSockName in
+     * netaddr.inet.ip because netaddr.inet.ip is returned
+     * as 0 (= PR_INADDR_ANY).
+     */
+
+    if (PR_SetNetAddr(PR_IpAddrLoopback, client_domain,
+                      PR_ntohs(PR_NetAddrInetPort(&netaddr)),
+                      &udp_server_addr) == PR_FAILURE) {
+        fprintf(stderr,"prsocket_test: PR_SetNetAddr failed\n");
+        failed_already=1;
+        return;
+    }
+    if ((client_domain == PR_AF_INET6) && (server_domain == PR_AF_INET))
+        PR_ConvertIPv4AddrToIPv6(PR_htonl(INADDR_LOOPBACK),
+                                 &udp_server_addr.ipv6.ip);
+
+    /*
+     * Wake up parent thread because server address is bound and made
+     * available in the global variable 'udp_server_addr'
+     */
+    PR_PostSem(sp->addr_sem);
+
+    bytes = sp->datalen;
+    in_buf = PR_NEW(buffer);
+    if (in_buf == NULL) {
+        fprintf(stderr,"prsocket_test: failed to alloc buffer struct\n");
+        failed_already=1;
+        return;
+    }
+    /*
+     * Receive datagrams from clients and send them back, unmodified, to the
+     * clients
+     */
+    memset(&netaddr, 0, sizeof(netaddr));
+    for (i = 0; i < (num_udp_clients * num_udp_datagrams_per_client); i++) {
+        DPRINTF(("UDP_Server: calling PR_RecvFrom client  - ip = 0x%lx, port = %d bytes = %d inbuf = 0x%lx, inbuf[0] = 0x%lx\n",
+                 netaddr.inet.ip, netaddr.inet.port, bytes, in_buf->data,
+                 in_buf->data[0]));
+
+        rv = PR_RecvFrom(sockfd, in_buf->data, bytes, 0, &netaddr,
+                         PR_INTERVAL_NO_TIMEOUT);
+        DPRINTF(("UDP_Server: PR_RecvFrom client  - ip = 0x%lx, port = %d bytes = %d inbuf = 0x%lx, inbuf[0] = 0x%lx\n",
+                 netaddr.inet.ip, netaddr.inet.port, rv, in_buf->data,
+                 in_buf->data[0]));
+        if (rv != bytes) {
+            return;
+        }
+        rv = PR_SendTo(sockfd, in_buf->data, bytes, 0, &netaddr,
+                       PR_INTERVAL_NO_TIMEOUT);
+        if (rv != bytes) {
+            return;
+        }
+    }
+
+    PR_DELETE(in_buf);
+    PR_Close(sockfd);
+
+    /*
+     * Decrement exit_counter and notify parent thread
+     */
+    PR_EnterMonitor(sp->exit_mon);
+    --(*sp->exit_counter);
+    PR_Notify(sp->exit_mon);
+    PR_ExitMonitor(sp->exit_mon);
+    DPRINTF(("UDP_Server [0x%x] exiting\n", PR_GetCurrentThread()));
+}
+
+/*
+ * TCP_Client
+ *    Client Thread
+ *    Connect to the server at the address specified in the argument.
+ *    Fill in a buffer, write data to server, read it back and check
+ *    for data corruption.
+ *    Close the socket for server connection
+ */
+static void PR_CALLBACK
+TCP_Client(void *arg)
+{
+    Client_Param *cp = (Client_Param *) arg;
+    PRFileDesc *sockfd;
+    buffer *in_buf, *out_buf;
+    union PRNetAddr netaddr;
+    PRInt32 bytes, i, j;
+
+
+    bytes = cp->datalen;
+    out_buf = PR_NEW(buffer);
+    if (out_buf == NULL) {
+        fprintf(stderr,"prsocket_test: failed to alloc buffer struct\n");
+        failed_already=1;
+        return;
+    }
+    in_buf = PR_NEW(buffer);
+    if (in_buf == NULL) {
+        fprintf(stderr,"prsocket_test: failed to alloc buffer struct\n");
+        failed_already=1;
+        return;
+    }
+    netaddr = cp->server_addr;
+
+    for (i = 0; i < num_tcp_connections_per_client; i++) {
+        if ((sockfd = PR_OpenTCPSocket(client_domain)) == NULL) {
+            fprintf(stderr,"prsocket_test: PR_OpenTCPSocket failed\n");
+            failed_already=1;
+            return;
+        }
+        if (PR_Connect(sockfd, &netaddr,PR_INTERVAL_NO_TIMEOUT) < 0) {
+            fprintf(stderr, "PR_Connect failed: (%ld, %ld)\n",
+                    PR_GetError(), PR_GetOSError());
+            failed_already=1;
+            return;
+        }
+        for (j = 0; j < num_tcp_mesgs_per_connection; j++) {
+            /*
+             * fill in random data
+             */
+            memset(out_buf->data, ((PRInt32) (&netaddr)) + i + j, bytes);
+            /*
+             * write to server
+             */
+#ifdef WINNT
+            if (test_cancelio && (j == 0)) {
+                PR_Sleep(PR_SecondsToInterval(12));
+            }
+#endif
+            if (writen(sockfd, out_buf->data, bytes) < bytes) {
+                fprintf(stderr,"prsocket_test: ERROR - TCP_Client:writen\n");
+                failed_already=1;
+                return;
+            }
+            DPRINTF(("TCP Client [0x%lx]: out_buf = 0x%lx out_buf[0] = 0x%lx\n",
+                     PR_GetCurrentThread(), out_buf, (*((int *) out_buf->data))));
+            if (readn(sockfd, in_buf->data, bytes) < bytes) {
+                fprintf(stderr,"prsocket_test: ERROR - TCP_Client:readn\n");
+                failed_already=1;
+                return;
+            }
+            /*
+             * verify the data read
+             */
+            if (memcmp(in_buf->data, out_buf->data, bytes) != 0) {
+                fprintf(stderr,"prsocket_test: ERROR - data corruption\n");
+                failed_already=1;
+                return;
+            }
+        }
+        /*
+         * shutdown reads and writes
+         */
+        if (PR_Shutdown(sockfd, PR_SHUTDOWN_BOTH) < 0) {
+            fprintf(stderr,"prsocket_test: ERROR - PR_Shutdown\n");
+            failed_already=1;
+        }
+        PR_Close(sockfd);
+    }
+
+    PR_DELETE(out_buf);
+    PR_DELETE(in_buf);
+
+    /*
+     * Decrement exit_counter and notify parent thread
+     */
+
+    PR_EnterMonitor(cp->exit_mon);
+    --(*cp->exit_counter);
+    PR_Notify(cp->exit_mon);
+    PR_ExitMonitor(cp->exit_mon);
+    DPRINTF(("TCP_Client [0x%x] exiting\n", PR_GetCurrentThread()));
+}
+
+/*
+ * UDP_Client
+ *    Client Thread
+ *    Create a socket and bind an address
+ *    Communicate with the server at the address specified in the argument.
+ *    Fill in a buffer, write data to server, read it back and check
+ *    for data corruption.
+ *    Close the socket
+ */
+static void PR_CALLBACK
+UDP_Client(void *arg)
+{
+    Client_Param *cp = (Client_Param *) arg;
+    PRFileDesc *sockfd;
+    buffer *in_buf, *out_buf;
+    union PRNetAddr netaddr;
+    PRInt32 bytes, i, rv;
+
+
+    bytes = cp->datalen;
+    out_buf = PR_NEW(buffer);
+    if (out_buf == NULL) {
+        fprintf(stderr,"prsocket_test: failed to alloc buffer struct\n");
+        failed_already=1;
+        return;
+    }
+    in_buf = PR_NEW(buffer);
+    if (in_buf == NULL) {
+        fprintf(stderr,"prsocket_test: failed to alloc buffer struct\n");
+        failed_already=1;
+        return;
+    }
+    if ((sockfd = PR_OpenUDPSocket(client_domain)) == NULL) {
+        fprintf(stderr,"prsocket_test: PR_OpenUDPSocket failed\n");
+        failed_already=1;
+        return;
+    }
+
+    /*
+     * bind an address for the client, let the system chose the port
+     * number
+     */
+    memset(&netaddr, 0, sizeof(netaddr));
+    if (PR_SetNetAddr(PR_IpAddrAny, client_domain, 0,
+                      &netaddr) == PR_FAILURE) {
+        fprintf(stderr,"prsocket_test: PR_SetNetAddr failed\n");
+        failed_already=1;
+        return;
+    }
+    if (PR_Bind(sockfd, &netaddr) < 0) {
+        fprintf(stderr,"prsocket_test: ERROR - PR_Bind failed\n");
+        perror("PR_Bind");
+        return;
+    }
+
+    if (PR_GetSockName(sockfd, &netaddr) < 0) {
+        fprintf(stderr,"prsocket_test: ERROR - PR_GetSockName failed\n");
+        failed_already=1;
+        return;
+    }
+
+    DPRINTF(("PR_Bind: UDP Client netaddr.inet.ip = 0x%lx, netaddr.inet.port = %d\n",
+             netaddr.inet.ip, netaddr.inet.port));
+
+    netaddr = cp->server_addr;
+
+    if (cp->udp_connect) {
+        if (PR_Connect(sockfd, &netaddr,PR_INTERVAL_NO_TIMEOUT) < 0) {
+            fprintf(stderr,"prsocket_test: PR_Connect failed\n");
+            failed_already=1;
+            return;
+        }
+    }
+
+    for (i = 0; i < num_udp_datagrams_per_client; i++) {
+        /*
+         * fill in random data
+         */
+        DPRINTF(("UDP_Client [0x%lx]: out_buf = 0x%lx bytes = 0x%lx\n",
+                 PR_GetCurrentThread(), out_buf->data, bytes));
+        memset(out_buf->data, ((PRInt32) (&netaddr)) + i, bytes);
+        /*
+         * write to server
+         */
+        if (cp->udp_connect)
+            rv = PR_Send(sockfd, out_buf->data, bytes, 0,
+                         PR_INTERVAL_NO_TIMEOUT);
+        else
+            rv = PR_SendTo(sockfd, out_buf->data, bytes, 0, &netaddr,
+                           PR_INTERVAL_NO_TIMEOUT);
+        if (rv != bytes) {
+            return;
+        }
+        DPRINTF(("UDP_Client [0x%lx]: out_buf = 0x%lx out_buf[0] = 0x%lx\n",
+                 PR_GetCurrentThread(), out_buf, (*((int *) out_buf->data))));
+        if (cp->udp_connect)
+            rv = PR_Recv(sockfd, in_buf->data, bytes, 0,
+                         PR_INTERVAL_NO_TIMEOUT);
+        else
+            rv = PR_RecvFrom(sockfd, in_buf->data, bytes, 0, &netaddr,
+                             PR_INTERVAL_NO_TIMEOUT);
+        if (rv != bytes) {
+            return;
+        }
+        DPRINTF(("UDP_Client [0x%lx]: in_buf = 0x%lx in_buf[0] = 0x%lx\n",
+                 PR_GetCurrentThread(), in_buf, (*((int *) in_buf->data))));
+        /*
+         * verify the data read
+         */
+        if (memcmp(in_buf->data, out_buf->data, bytes) != 0) {
+            fprintf(stderr,"prsocket_test: ERROR - UDP data corruption\n");
+            failed_already=1;
+            return;
+        }
+    }
+    PR_Close(sockfd);
+
+    PR_DELETE(in_buf);
+    PR_DELETE(out_buf);
+
+    /*
+     * Decrement exit_counter and notify parent thread
+     */
+
+    PR_EnterMonitor(cp->exit_mon);
+    --(*cp->exit_counter);
+    PR_Notify(cp->exit_mon);
+    PR_ExitMonitor(cp->exit_mon);
+    PR_DELETE(cp);
+    DPRINTF(("UDP_Client [0x%x] exiting\n", PR_GetCurrentThread()));
+}
+
+/*
+ * TCP_Socket_Client_Server_Test    - concurrent server test
+ *
+ *    One server and several clients are started
+ *    Each client connects to the server and sends a chunk of data
+ *    For each connection, server starts another thread to read the data
+ *    from the client and send it back to the client, unmodified.
+ *    Each client checks that data received from server is same as the
+ *    data it sent to the server.
+ *
+ */
+
+static PRInt32
+TCP_Socket_Client_Server_Test(void)
+{
+    int i;
+    PRThread *t;
+    PRSemaphore *server_sem;
+    Server_Param *sparamp;
+    Client_Param *cparamp;
+    PRMonitor *mon2;
+    PRInt32    datalen;
+
+
+    datalen = tcp_mesg_size;
+    thread_count = 0;
+    /*
+     * start the server thread
+     */
+    sparamp = PR_NEW(Server_Param);
+    if (sparamp == NULL) {
+        fprintf(stderr,"prsocket_test: PR_NEW failed\n");
+        failed_already=1;
+        return -1;
+    }
+    server_sem = PR_NewSem(0);
+    if (server_sem == NULL) {
+        fprintf(stderr,"prsocket_test: PR_NewSem failed\n");
+        failed_already=1;
+        return -1;
+    }
+    mon2 = PR_NewMonitor();
+    if (mon2 == NULL) {
+        fprintf(stderr,"prsocket_test: PR_NewMonitor failed\n");
+        failed_already=1;
+        return -1;
+    }
+    PR_EnterMonitor(mon2);
+
+    sparamp->addr_sem = server_sem;
+    sparamp->exit_mon = mon2;
+    sparamp->exit_counter = &thread_count;
+    sparamp->datalen = datalen;
+    t = PR_CreateThread(PR_USER_THREAD,
+                        TCP_Server, (void *)sparamp,
+                        PR_PRIORITY_NORMAL,
+                        PR_LOCAL_THREAD,
+                        PR_UNJOINABLE_THREAD,
+                        0);
+    if (t == NULL) {
+        fprintf(stderr,"prsocket_test: PR_CreateThread failed\n");
+        failed_already=1;
+        return -1;
+    }
+    DPRINTF(("Created TCP server = 0x%lx\n", t));
+    thread_count++;
+
+    /*
+     * wait till the server address is setup
+     */
+    PR_WaitSem(server_sem);
+
+    /*
+     * Now start a bunch of client threads
+     */
+
+    cparamp = PR_NEW(Client_Param);
+    if (cparamp == NULL) {
+        fprintf(stderr,"prsocket_test: PR_NEW failed\n");
+        failed_already=1;
+        return -1;
+    }
+    cparamp->server_addr = tcp_server_addr;
+    cparamp->exit_mon = mon2;
+    cparamp->exit_counter = &thread_count;
+    cparamp->datalen = datalen;
+    for (i = 0; i < num_tcp_clients; i++) {
+        t = create_new_thread(PR_USER_THREAD,
+                              TCP_Client, (void *) cparamp,
+                              PR_PRIORITY_NORMAL,
+                              PR_LOCAL_THREAD,
+                              PR_UNJOINABLE_THREAD,
+                              0, i);
+        if (t == NULL) {
+            fprintf(stderr,"prsocket_test: PR_CreateThread failed\n");
+            failed_already=1;
+            return -1;
+        }
+        DPRINTF(("Created TCP client = 0x%lx\n", t));
+        thread_count++;
+    }
+    /* Wait for server and client threads to exit */
+    while (thread_count) {
+        PR_Wait(mon2, PR_INTERVAL_NO_TIMEOUT);
+        DPRINTF(("TCP Server - thread_count  = %d\n", thread_count));
+    }
+    PR_ExitMonitor(mon2);
+    printf("%30s","TCP_Socket_Client_Server_Test:");
+    printf("%2ld Server %2ld Clients %2ld connections_per_client\n",1l,
+           num_tcp_clients, num_tcp_connections_per_client);
+    printf("%30s %2ld messages_per_connection %4ld bytes_per_message\n",":",
+           num_tcp_mesgs_per_connection, tcp_mesg_size);
+
+    return 0;
+}
+
+/*
+ * UDP_Socket_Client_Server_Test    - iterative server test
+ *
+ *    One server and several clients are started
+ *    Each client connects to the server and sends a chunk of data
+ *    For each connection, server starts another thread to read the data
+ *    from the client and send it back to the client, unmodified.
+ *    Each client checks that data received from server is same as the
+ *    data it sent to the server.
+ *
+ */
+
+static PRInt32
+UDP_Socket_Client_Server_Test(void)
+{
+    int i;
+    PRThread *t;
+    PRSemaphore *server_sem;
+    Server_Param *sparamp;
+    Client_Param *cparamp;
+    PRMonitor *mon2;
+    PRInt32    datalen;
+    PRInt32    udp_connect = 1;
+
+
+    datalen = udp_datagram_size;
+    thread_count = 0;
+    /*
+     * start the server thread
+     */
+    sparamp = PR_NEW(Server_Param);
+    if (sparamp == NULL) {
+        fprintf(stderr,"prsocket_test: PR_NEW failed\n");
+        failed_already=1;
+        return -1;
+    }
+    server_sem = PR_NewSem(0);
+    if (server_sem == NULL) {
+        fprintf(stderr,"prsocket_test: PR_NewSem failed\n");
+        failed_already=1;
+        return -1;
+    }
+    mon2 = PR_NewMonitor();
+    if (mon2 == NULL) {
+        fprintf(stderr,"prsocket_test: PR_NewMonitor failed\n");
+        failed_already=1;
+        return -1;
+    }
+    PR_EnterMonitor(mon2);
+
+    sparamp->addr_sem = server_sem;
+    sparamp->exit_mon = mon2;
+    sparamp->exit_counter = &thread_count;
+    sparamp->datalen = datalen;
+    DPRINTF(("Creating UDP server"));
+    t = PR_CreateThread(PR_USER_THREAD,
+                        UDP_Server, (void *)sparamp,
+                        PR_PRIORITY_NORMAL,
+                        PR_LOCAL_THREAD,
+                        PR_UNJOINABLE_THREAD,
+                        0);
+    if (t == NULL) {
+        fprintf(stderr,"prsocket_test: PR_CreateThread failed\n");
+        failed_already=1;
+        return -1;
+    }
+    thread_count++;
+
+    /*
+     * wait till the server address is setup
+     */
+    PR_WaitSem(server_sem);
+
+    /*
+     * Now start a bunch of client threads
+     */
+
+    for (i = 0; i < num_udp_clients; i++) {
+        cparamp = PR_NEW(Client_Param);
+        if (cparamp == NULL) {
+            fprintf(stderr,"prsocket_test: PR_NEW failed\n");
+            failed_already=1;
+            return -1;
+        }
+        cparamp->server_addr = udp_server_addr;
+        cparamp->exit_mon = mon2;
+        cparamp->exit_counter = &thread_count;
+        cparamp->datalen = datalen;
+        /*
+         * Cause every other client thread to connect udp sockets
+         */
+        cparamp->udp_connect = udp_connect;
+        if (udp_connect) {
+            udp_connect = 0;
+        }
+        else {
+            udp_connect = 1;
+        }
+        DPRINTF(("Creating UDP client %d\n", i));
+        t = PR_CreateThread(PR_USER_THREAD,
+                            UDP_Client, (void *) cparamp,
+                            PR_PRIORITY_NORMAL,
+                            PR_LOCAL_THREAD,
+                            PR_UNJOINABLE_THREAD,
+                            0);
+        if (t == NULL) {
+            fprintf(stderr,"prsocket_test: PR_CreateThread failed\n");
+            failed_already=1;
+            return -1;
+        }
+        thread_count++;
+    }
+    /* Wait for server and client threads to exit */
+    while (thread_count) {
+        PR_Wait(mon2, PR_INTERVAL_NO_TIMEOUT);
+        DPRINTF(("UDP Server - thread_count  = %d\n", thread_count));
+    }
+    PR_ExitMonitor(mon2);
+    printf("%30s","UDP_Socket_Client_Server_Test: ");
+    printf("%2ld Server %2ld Clients\n",1l, num_udp_clients);
+    printf("%30s %2ld datagrams_per_client %4ld bytes_per_datagram\n",":",
+           num_udp_datagrams_per_client, udp_datagram_size);
+
+    return 0;
+}
+
+static PRFileDesc *small_file_fd, *large_file_fd;
+static void *small_file_addr, *small_file_header, *large_file_addr;
+static void *small_file_trailer, *large_file_header, *large_file_trailer;
+/*
+ * TransmitFile_Client
+ *    Client Thread
+ */
+static void
+TransmitFile_Client(void *arg)
+{
+    PRFileDesc *sockfd;
+    union PRNetAddr netaddr;
+    char *small_buf, *large_buf;
+    Client_Param *cp = (Client_Param *) arg;
+    PRInt32 rlen;
+
+    small_buf = (char*)PR_Malloc(SMALL_FILE_SIZE + SMALL_FILE_HEADER_SIZE +
+                                 SMALL_FILE_TRAILER_SIZE);
+    if (small_buf == NULL) {
+        fprintf(stderr,"prsocket_test: failed to alloc buffer\n");
+        failed_already=1;
+        return;
+    }
+    large_buf = (char*)PR_Malloc(LARGE_FILE_SIZE + LARGE_FILE_HEADER_SIZE +
+                                 LARGE_FILE_TRAILER_SIZE);
+    if (large_buf == NULL) {
+        fprintf(stderr,"prsocket_test: failed to alloc buffer\n");
+        failed_already=1;
+        return;
+    }
+    netaddr.inet.family = cp->server_addr.inet.family;
+    netaddr.inet.port = cp->server_addr.inet.port;
+    netaddr.inet.ip = cp->server_addr.inet.ip;
+
+    if ((sockfd = PR_NewTCPSocket()) == NULL) {
+        fprintf(stderr,"prsocket_test: PR_NewTCPSocket failed\n");
+        failed_already=1;
+        return;
+    }
+
+    if (PR_Connect(sockfd, &netaddr,PR_INTERVAL_NO_TIMEOUT) < 0) {
+        fprintf(stderr,"prsocket_test: PR_Connect failed\n");
+        failed_already=1;
+        return;
+    }
+    /*
+     * read the small file and verify the data
+     */
+    if (readn(sockfd, small_buf, SMALL_FILE_SIZE + SMALL_FILE_HEADER_SIZE)
+        != (SMALL_FILE_SIZE + SMALL_FILE_HEADER_SIZE)) {
+        fprintf(stderr,
+                "prsocket_test: TransmitFile_Client failed to receive file\n");
+        failed_already=1;
+        return;
+    }
+#if defined(XP_UNIX)
+    /* File transmission test can not be done because of large file's size */
+    if (memcmp(small_file_header, small_buf, SMALL_FILE_HEADER_SIZE) != 0) {
+        fprintf(stderr,
+                "prsocket_test: TransmitFile_Client ERROR - small file header data corruption\n");
+        failed_already=1;
+        return;
+    }
+    if (memcmp(small_file_addr, small_buf + SMALL_FILE_HEADER_SIZE,
+               SMALL_FILE_SIZE) != 0) {
+        fprintf(stderr,
+                "prsocket_test: TransmitFile_Client ERROR - small file data corruption\n");
+        failed_already=1;
+        return;
+    }
+#endif
+    /*
+     * read the large file and verify the data
+     */
+    if (readn(sockfd, large_buf, LARGE_FILE_SIZE) != LARGE_FILE_SIZE) {
+        fprintf(stderr,
+                "prsocket_test: TransmitFile_Client failed to receive file\n");
+        failed_already=1;
+        return;
+    }
+#if defined(XP_UNIX)
+    if (memcmp(large_file_addr, large_buf, LARGE_FILE_SIZE) != 0) {
+        fprintf(stderr,
+                "prsocket_test: TransmitFile_Client ERROR - large file data corruption\n");
+        failed_already=1;
+    }
+#endif
+
+
+    /*
+     * receive data from PR_SendFile
+     */
+    /*
+     * case 1: small file with header and trailer
+     */
+    rlen = SMALL_FILE_SIZE + SMALL_FILE_HEADER_SIZE +
+           SMALL_FILE_TRAILER_SIZE;
+    if (readn(sockfd, small_buf, rlen) != rlen) {
+        fprintf(stderr,
+                "prsocket_test: SendFile_Client failed to receive file\n");
+        failed_already=1;
+        return;
+    }
+#if defined(XP_UNIX)
+    if (memcmp(small_file_header, small_buf, SMALL_FILE_HEADER_SIZE) != 0) {
+        fprintf(stderr,
+                "SendFile 1. ERROR - small file header corruption\n");
+        failed_already=1;
+        return;
+    }
+    if (memcmp(small_file_addr, small_buf + SMALL_FILE_HEADER_SIZE,
+               SMALL_FILE_SIZE) != 0) {
+        fprintf(stderr,
+                "SendFile 1. ERROR - small file data corruption\n");
+        failed_already=1;
+        return;
+    }
+    if (memcmp(small_file_trailer,
+               small_buf + SMALL_FILE_HEADER_SIZE + SMALL_FILE_SIZE,
+               SMALL_FILE_TRAILER_SIZE) != 0) {
+        fprintf(stderr,
+                "SendFile 1. ERROR - small file trailer corruption\n");
+        failed_already=1;
+        return;
+    }
+#endif
+    /*
+     * case 2: partial large file at zero offset, file with header and trailer
+     */
+    rlen = LARGE_FILE_LEN_1 + LARGE_FILE_HEADER_SIZE +
+           LARGE_FILE_TRAILER_SIZE;
+    if (readn(sockfd, large_buf, rlen) != rlen) {
+        fprintf(stderr,
+                "prsocket_test: SendFile_Client failed to receive file\n");
+        failed_already=1;
+        return;
+    }
+#if defined(XP_UNIX)
+    if (memcmp(large_file_header, large_buf, LARGE_FILE_HEADER_SIZE) != 0) {
+        fprintf(stderr,
+                "SendFile 2. ERROR - large file header corruption\n");
+        failed_already=1;
+        return;
+    }
+    if (memcmp(large_file_addr, large_buf + LARGE_FILE_HEADER_SIZE,
+               LARGE_FILE_LEN_1) != 0) {
+        fprintf(stderr,
+                "SendFile 2. ERROR - large file data corruption\n");
+        failed_already=1;
+        return;
+    }
+    if (memcmp(large_file_trailer,
+               large_buf + LARGE_FILE_HEADER_SIZE + LARGE_FILE_LEN_1,
+               LARGE_FILE_TRAILER_SIZE) != 0) {
+        fprintf(stderr,
+                "SendFile 2. ERROR - large file trailer corruption\n");
+        failed_already=1;
+        return;
+    }
+#endif
+    /*
+     * case 3: partial small file at non-zero offset, with header
+     */
+    rlen = SMALL_FILE_LEN_1 + SMALL_FILE_HEADER_SIZE;
+    if (readn(sockfd, small_buf, rlen) != rlen) {
+        fprintf(stderr,
+                "prsocket_test: SendFile_Client failed to receive file\n");
+        failed_already=1;
+        return;
+    }
+#if defined(XP_UNIX)
+    if (memcmp(small_file_header, small_buf, SMALL_FILE_HEADER_SIZE) != 0) {
+        fprintf(stderr,
+                "SendFile 3. ERROR - small file header corruption\n");
+        failed_already=1;
+        return;
+    }
+    if (memcmp((char *) small_file_addr + SMALL_FILE_OFFSET_1,
+               small_buf + SMALL_FILE_HEADER_SIZE, SMALL_FILE_LEN_1) != 0) {
+        fprintf(stderr,
+                "SendFile 3. ERROR - small file data corruption\n");
+        failed_already=1;
+        return;
+    }
+#endif
+    /*
+     * case 4: partial small file at non-zero offset, with trailer
+     */
+    rlen = SMALL_FILE_LEN_2 + SMALL_FILE_TRAILER_SIZE;
+    if (readn(sockfd, small_buf, rlen) != rlen) {
+        fprintf(stderr,
+                "prsocket_test: SendFile_Client failed to receive file\n");
+        failed_already=1;
+        return;
+    }
+#if defined(XP_UNIX)
+    if (memcmp((char *) small_file_addr + SMALL_FILE_OFFSET_2, small_buf,
+               SMALL_FILE_LEN_2) != 0) {
+        fprintf(stderr,
+                "SendFile 4. ERROR - small file data corruption\n");
+        failed_already=1;
+        return;
+    }
+    if (memcmp(small_file_trailer, small_buf + SMALL_FILE_LEN_2,
+               SMALL_FILE_TRAILER_SIZE) != 0) {
+        fprintf(stderr,
+                "SendFile 4. ERROR - small file trailer corruption\n");
+        failed_already=1;
+        return;
+    }
+#endif
+    /*
+     * case 5: partial large file at non-zero offset, file with header
+     */
+    rlen = LARGE_FILE_LEN_2 + LARGE_FILE_HEADER_SIZE;
+    if (readn(sockfd, large_buf, rlen) != rlen) {
+        fprintf(stderr,
+                "prsocket_test: SendFile_Client failed to receive file\n");
+        failed_already=1;
+        return;
+    }
+#if defined(XP_UNIX)
+    if (memcmp(large_file_header, large_buf, LARGE_FILE_HEADER_SIZE) != 0) {
+        fprintf(stderr,
+                "SendFile 5. ERROR - large file header corruption\n");
+        failed_already=1;
+        return;
+    }
+    if (memcmp((char *)large_file_addr + LARGE_FILE_OFFSET_2,
+               large_buf + LARGE_FILE_HEADER_SIZE,
+               LARGE_FILE_LEN_2) != 0) {
+        fprintf(stderr,
+                "SendFile 5. ERROR - large file data corruption\n");
+        failed_already=1;
+        return;
+    }
+#endif
+    /*
+     * case 6: partial small file at non-zero offset, with header
+     */
+    rlen = SMALL_FILE_LEN_3 + SMALL_FILE_HEADER_SIZE;
+    if (readn(sockfd, small_buf, rlen) != rlen) {
+        fprintf(stderr,
+                "prsocket_test: SendFile_Client failed to receive file\n");
+        failed_already=1;
+        return;
+    }
+#if defined(XP_UNIX)
+    if (memcmp(small_file_header, small_buf, SMALL_FILE_HEADER_SIZE) != 0) {
+        fprintf(stderr,
+                "SendFile 6. ERROR - small file header corruption\n");
+        return;
+    }
+    if (memcmp((char *) small_file_addr + SMALL_FILE_OFFSET_3,
+               small_buf + SMALL_FILE_HEADER_SIZE, SMALL_FILE_LEN_3) != 0) {
+#if 0
+        char *i, *j;
+        int k;
+
+        i = (char *) small_file_addr + SMALL_FILE_OFFSET_3;
+        j = small_buf + SMALL_FILE_HEADER_SIZE;
+        k = SMALL_FILE_LEN_3;
+        while (k-- > 0) {
+            if (*i++ != *j++)
+                printf("i = %d j = %d\n",
+                       (int) (i - ((char *) small_file_addr + SMALL_FILE_OFFSET_3)),
+                       (int) (j - (small_buf + SMALL_FILE_HEADER_SIZE)));
+        }
+#endif
+        fprintf(stderr,
+                "SendFile 6. ERROR - small file data corruption\n");
+        failed_already=1;
+        return;
+    }
+#endif
+    /*
+     * case 7: partial large file at non-zero offset, with header
+     */
+    rlen = LARGE_FILE_LEN_3 + LARGE_FILE_HEADER_SIZE;
+    if (readn(sockfd, large_buf, rlen) != rlen) {
+        fprintf(stderr,
+                "prsocket_test: SendFile_Client failed to receive file\n");
+        failed_already=1;
+        return;
+    }
+#if defined(XP_UNIX)
+    if (memcmp(large_file_header, large_buf, LARGE_FILE_HEADER_SIZE) != 0) {
+        fprintf(stderr,
+                "SendFile 7. ERROR - large file header corruption\n");
+        failed_already=1;
+        return;
+    }
+    if (memcmp((char *)large_file_addr + LARGE_FILE_OFFSET_3,
+               large_buf + LARGE_FILE_HEADER_SIZE,
+               LARGE_FILE_LEN_3) != 0) {
+        fprintf(stderr,
+                "SendFile 7. ERROR - large file data corruption\n");
+        failed_already=1;
+        return;
+    }
+#endif
+    /*
+     * case 8: partial large file at non-zero, page-aligned offset, with
+     * header and trailer
+     */
+    rlen = LARGE_FILE_LEN_4 + LARGE_FILE_HEADER_SIZE +
+           LARGE_FILE_TRAILER_SIZE;
+    if (readn(sockfd, large_buf, rlen) != rlen) {
+        fprintf(stderr,
+                "prsocket_test: SendFile_Client failed to receive file\n");
+        failed_already=1;
+        return;
+    }
+#if defined(XP_UNIX)
+    if (memcmp(large_file_header, large_buf, LARGE_FILE_HEADER_SIZE) != 0) {
+        fprintf(stderr,
+                "SendFile 2. ERROR - large file header corruption\n");
+        failed_already=1;
+        return;
+    }
+    if (memcmp((char *)large_file_addr + LARGE_FILE_OFFSET_4,
+               large_buf + LARGE_FILE_HEADER_SIZE,
+               LARGE_FILE_LEN_4) != 0) {
+        fprintf(stderr,
+                "SendFile 2. ERROR - large file data corruption\n");
+        failed_already=1;
+        return;
+    }
+    if (memcmp(large_file_trailer,
+               large_buf + LARGE_FILE_HEADER_SIZE + LARGE_FILE_LEN_4,
+               LARGE_FILE_TRAILER_SIZE) != 0) {
+        fprintf(stderr,
+                "SendFile 2. ERROR - large file trailer corruption\n");
+        failed_already=1;
+        return;
+    }
+#endif
+    PR_DELETE(small_buf);
+    PR_DELETE(large_buf);
+    PR_Close(sockfd);
+
+
+    /*
+     * Decrement exit_counter and notify parent thread
+     */
+
+    PR_EnterMonitor(cp->exit_mon);
+    --(*cp->exit_counter);
+    PR_Notify(cp->exit_mon);
+    PR_ExitMonitor(cp->exit_mon);
+    DPRINTF(("TransmitFile_Client [0x%lx] exiting\n", PR_GetCurrentThread()));
+}
+
+/*
+ * Serve_TransmitFile_Client
+ *    Thread, started by the server, for serving a client connection.
+ *    Trasmits a small file, with a header, and a large file, without
+ *    a header
+ */
+static void
+Serve_TransmitFile_Client(void *arg)
+{
+    Serve_Client_Param *scp = (Serve_Client_Param *) arg;
+    PRFileDesc *sockfd;
+    PRInt32 bytes;
+    PRFileDesc *local_small_file_fd=NULL;
+    PRFileDesc *local_large_file_fd=NULL;
+    PRSendFileData sfd;
+    PRInt32 slen;
+
+    sockfd = scp->sockfd;
+    local_small_file_fd = PR_Open(SMALL_FILE_NAME, PR_RDONLY,0);
+
+    if (local_small_file_fd == NULL) {
+        fprintf(stderr,"prsocket_test failed to open file for transmitting %s\n",
+                SMALL_FILE_NAME);
+        failed_already=1;
+        goto done;
+    }
+    local_large_file_fd = PR_Open(LARGE_FILE_NAME, PR_RDONLY,0);
+
+    if (local_large_file_fd == NULL) {
+        fprintf(stderr,"prsocket_test failed to open file for transmitting %s\n",
+                LARGE_FILE_NAME);
+        failed_already=1;
+        goto done;
+    }
+    bytes = PR_TransmitFile(sockfd, local_small_file_fd, small_file_header,
+                            SMALL_FILE_HEADER_SIZE, PR_TRANSMITFILE_KEEP_OPEN,
+                            PR_INTERVAL_NO_TIMEOUT);
+    if (bytes != (SMALL_FILE_SIZE+ SMALL_FILE_HEADER_SIZE)) {
+        fprintf(stderr,
+                "prsocet_test: PR_TransmitFile failed: (%ld, %ld)\n",
+                PR_GetError(), PR_GetOSError());
+        failed_already=1;
+    }
+    bytes = PR_TransmitFile(sockfd, local_large_file_fd, NULL, 0,
+                            PR_TRANSMITFILE_KEEP_OPEN, PR_INTERVAL_NO_TIMEOUT);
+    if (bytes != LARGE_FILE_SIZE) {
+        fprintf(stderr,
+                "prsocket_test: PR_TransmitFile failed: (%ld, %ld)\n",
+                PR_GetError(), PR_GetOSError());
+        failed_already=1;
+    }
+
+    /*
+     * PR_SendFile test cases
+     */
+
+    /*
+     * case 1: small file with header and trailer
+     */
+    sfd.fd = local_small_file_fd;
+    sfd.file_offset = 0;
+    sfd.file_nbytes = 0;
+    sfd.header = small_file_header;
+    sfd.hlen = SMALL_FILE_HEADER_SIZE;
+    sfd.trailer = small_file_trailer;
+    sfd.tlen = SMALL_FILE_TRAILER_SIZE;
+    bytes = PR_SendFile(sockfd, &sfd, PR_TRANSMITFILE_KEEP_OPEN,
+                        PR_INTERVAL_NO_TIMEOUT);
+    slen = SMALL_FILE_SIZE+ SMALL_FILE_HEADER_SIZE +
+           SMALL_FILE_TRAILER_SIZE;
+    if (bytes != slen) {
+        fprintf(stderr,
+                "socket: Error - 1. PR_SendFile  send_size = %d, bytes sent = %d\n",
+                slen, bytes);
+        fprintf(stderr,
+                "prsocket_test: PR_SendFile failed: (%ld, %ld)\n",
+                PR_GetError(), PR_GetOSError());
+        failed_already=1;
+    }
+
+    /*
+     * case 2: partial large file at zero offset, file with header and trailer
+     */
+    sfd.fd = local_large_file_fd;
+    sfd.file_offset = 0;
+    sfd.file_nbytes = LARGE_FILE_LEN_1;
+    sfd.header = large_file_header;
+    sfd.hlen = LARGE_FILE_HEADER_SIZE;
+    sfd.trailer = large_file_trailer;
+    sfd.tlen = LARGE_FILE_TRAILER_SIZE;
+    bytes = PR_SendFile(sockfd, &sfd, PR_TRANSMITFILE_KEEP_OPEN,
+                        PR_INTERVAL_NO_TIMEOUT);
+    slen = LARGE_FILE_LEN_1 + LARGE_FILE_HEADER_SIZE +
+           LARGE_FILE_TRAILER_SIZE;
+    if (bytes != slen) {
+        fprintf(stderr,
+                "socket: Error - 2. PR_SendFile send_size = %d, bytes sent = %d\n",
+                slen, bytes);
+        fprintf(stderr,
+                "prsocket_test: PR_SendFile failed: (%ld, %ld)\n",
+                PR_GetError(), PR_GetOSError());
+        failed_already=1;
+    }
+    /*
+     * case 3: partial small file at non-zero offset, with header
+     */
+    sfd.fd = local_small_file_fd;
+    sfd.file_offset = SMALL_FILE_OFFSET_1;
+    sfd.file_nbytes = SMALL_FILE_LEN_1;
+    sfd.header = small_file_header;
+    sfd.hlen = SMALL_FILE_HEADER_SIZE;
+    sfd.trailer = NULL;
+    sfd.tlen = 0;
+    bytes = PR_SendFile(sockfd, &sfd, PR_TRANSMITFILE_KEEP_OPEN,
+                        PR_INTERVAL_NO_TIMEOUT);
+    slen = SMALL_FILE_LEN_1 + SMALL_FILE_HEADER_SIZE;
+    if (bytes != slen) {
+        fprintf(stderr,
+                "socket: Error - 3. PR_SendFile send_size = %d, bytes sent = %d\n",
+                slen, bytes);
+        fprintf(stderr,
+                "prsocket_test: PR_SendFile failed: (%ld, %ld)\n",
+                PR_GetError(), PR_GetOSError());
+        failed_already=1;
+    }
+    /*
+     * case 4: partial small file at non-zero offset, with trailer
+     */
+    sfd.fd = local_small_file_fd;
+    sfd.file_offset = SMALL_FILE_OFFSET_2;
+    sfd.file_nbytes = SMALL_FILE_LEN_2;
+    sfd.header = NULL;
+    sfd.hlen = 0;
+    sfd.trailer = small_file_trailer;
+    sfd.tlen = SMALL_FILE_TRAILER_SIZE;
+    bytes = PR_SendFile(sockfd, &sfd, PR_TRANSMITFILE_KEEP_OPEN,
+                        PR_INTERVAL_NO_TIMEOUT);
+    slen = SMALL_FILE_LEN_2 + SMALL_FILE_TRAILER_SIZE;
+    if (bytes != slen) {
+        fprintf(stderr,
+                "socket: Error - 4. PR_SendFile send_size = %d, bytes sent = %d\n",
+                slen, bytes);
+        fprintf(stderr,
+                "prsocket_test: PR_SendFile failed: (%ld, %ld)\n",
+                PR_GetError(), PR_GetOSError());
+        failed_already=1;
+    }
+    /*
+     * case 5: partial large file at non-zero offset, file with header
+     */
+    sfd.fd = local_large_file_fd;
+    sfd.file_offset = LARGE_FILE_OFFSET_2;
+    sfd.file_nbytes = LARGE_FILE_LEN_2;
+    sfd.header = large_file_header;
+    sfd.hlen = LARGE_FILE_HEADER_SIZE;
+    sfd.trailer = NULL;
+    sfd.tlen = 0;
+    bytes = PR_SendFile(sockfd, &sfd, PR_TRANSMITFILE_KEEP_OPEN,
+                        PR_INTERVAL_NO_TIMEOUT);
+    slen = LARGE_FILE_LEN_2 + LARGE_FILE_HEADER_SIZE;
+    if (bytes != slen) {
+        fprintf(stderr,
+                "socket: Error - 5. PR_SendFile send_size = %d, bytes sent = %d\n",
+                slen, bytes);
+        fprintf(stderr,
+                "prsocket_test: PR_SendFile failed: (%ld, %ld)\n",
+                PR_GetError(), PR_GetOSError());
+        failed_already=1;
+    }
+    /*
+     * case 6: partial small file from non-zero offset till end of file, with header
+     */
+    sfd.fd = local_small_file_fd;
+    sfd.file_offset = SMALL_FILE_OFFSET_3;
+    sfd.file_nbytes = 0;                /* data from offset to end-of-file */
+    sfd.header = small_file_header;
+    sfd.hlen = SMALL_FILE_HEADER_SIZE;
+    sfd.trailer = NULL;
+    sfd.tlen = 0;
+    bytes = PR_SendFile(sockfd, &sfd, PR_TRANSMITFILE_KEEP_OPEN,
+                        PR_INTERVAL_NO_TIMEOUT);
+    slen = SMALL_FILE_LEN_3 + SMALL_FILE_HEADER_SIZE;
+    if (bytes != slen) {
+        fprintf(stderr,
+                "socket: Error - 6. PR_SendFile send_size = %d, bytes sent = %d\n",
+                slen, bytes);
+        fprintf(stderr,
+                "prsocket_test: PR_SendFile failed: (%ld, %ld)\n",
+                PR_GetError(), PR_GetOSError());
+        failed_already=1;
+    }
+    /*
+     * case 7: partial large file at non-zero offset till end-of-file, with header
+     */
+    sfd.fd = local_large_file_fd;
+    sfd.file_offset = LARGE_FILE_OFFSET_3;
+    sfd.file_nbytes = 0;                /* data until end-of-file */
+    sfd.header = large_file_header;
+    sfd.hlen = LARGE_FILE_HEADER_SIZE;
+    sfd.trailer = NULL;
+    sfd.tlen = 0;
+    bytes = PR_SendFile(sockfd, &sfd, PR_TRANSMITFILE_KEEP_OPEN,
+                        PR_INTERVAL_NO_TIMEOUT);
+    slen = LARGE_FILE_LEN_3 + LARGE_FILE_HEADER_SIZE;
+    if (bytes != slen) {
+        fprintf(stderr,
+                "socket: Error - 7. PR_SendFile send_size = %d, bytes sent = %d\n",
+                slen, bytes);
+        fprintf(stderr,
+                "prsocket_test: PR_SendFile failed: (%ld, %ld)\n",
+                PR_GetError(), PR_GetOSError());
+        failed_already=1;
+    }
+    /*
+     * case 8: partial large file at non-zero page-aligned offset,
+     * with header and trailer
+     */
+    sfd.fd = local_large_file_fd;
+    sfd.file_offset = LARGE_FILE_OFFSET_4;
+    sfd.file_nbytes = LARGE_FILE_LEN_4;
+    sfd.header = large_file_header;
+    sfd.hlen = LARGE_FILE_HEADER_SIZE;
+    sfd.trailer = large_file_trailer;
+    sfd.tlen = LARGE_FILE_TRAILER_SIZE;
+    bytes = PR_SendFile(sockfd, &sfd, PR_TRANSMITFILE_CLOSE_SOCKET,
+                        PR_INTERVAL_NO_TIMEOUT);
+    slen = LARGE_FILE_LEN_4 + LARGE_FILE_HEADER_SIZE +
+           LARGE_FILE_TRAILER_SIZE;
+    if (bytes != slen) {
+        fprintf(stderr,
+                "socket: Error - 2. PR_SendFile send_size = %d, bytes sent = %d\n",
+                slen, bytes);
+        fprintf(stderr,
+                "prsocket_test: PR_SendFile failed: (%ld, %ld)\n",
+                PR_GetError(), PR_GetOSError());
+        failed_already=1;
+    }
+done:
+    if (local_small_file_fd != NULL) {
+        PR_Close(local_small_file_fd);
+    }
+    if (local_large_file_fd != NULL) {
+        PR_Close(local_large_file_fd);
+    }
+}
+
+/*
+ * TransmitFile Server
+ *    Server Thread
+ *    Bind an address to a socket and listen for incoming connections
+ *    Create worker threads to service clients
+ */
+static void
+TransmitFile_Server(void *arg)
+{
+    PRThread **t = NULL;  /* an array of PRThread pointers */
+    Server_Param *sp = (Server_Param *) arg;
+    Serve_Client_Param *scp;
+    PRFileDesc *sockfd = NULL, *newsockfd;
+    PRNetAddr netaddr;
+    PRInt32 i;
+
+    t = (PRThread**)PR_MALLOC(num_transmitfile_clients * sizeof(PRThread *));
+    if (t == NULL) {
+        fprintf(stderr, "prsocket_test: run out of memory\n");
+        failed_already=1;
+        goto exit;
+    }
+    /*
+     * Create a tcp socket
+     */
+    if ((sockfd = PR_OpenTCPSocket(PR_AF_INET)) == NULL) {
+        fprintf(stderr,"prsocket_test: PR_OpenTCPSocket failed\n");
+        failed_already=1;
+        goto exit;
+    }
+    memset(&netaddr, 0, sizeof(netaddr));
+    netaddr.inet.family = PR_AF_INET;
+    netaddr.inet.port = PR_htons(TCP_SERVER_PORT);
+    netaddr.inet.ip = PR_htonl(PR_INADDR_ANY);
+    /*
+     * try a few times to bind server's address, if addresses are in
+     * use
+     */
+    i = 0;
+    while (PR_Bind(sockfd, &netaddr) < 0) {
+        if (PR_GetError() == PR_ADDRESS_IN_USE_ERROR) {
+            netaddr.inet.port += 2;
+            if (i++ < SERVER_MAX_BIND_COUNT) {
+                continue;
+            }
+        }
+        fprintf(stderr,"prsocket_test: ERROR - PR_Bind failed\n");
+        failed_already=1;
+        perror("PR_Bind");
+        goto exit;
+    }
+
+    if (PR_Listen(sockfd, 32) < 0) {
+        fprintf(stderr,"prsocket_test: ERROR - PR_Listen failed\n");
+        failed_already=1;
+        goto exit;
+    }
+
+    if (PR_GetSockName(sockfd, &netaddr) < 0) {
+        fprintf(stderr,
+                "prsocket_test: ERROR - PR_GetSockName failed\n");
+        failed_already=1;
+        goto exit;
+    }
+
+    DPRINTF(("TCP_Server: PR_BIND netaddr.inet.ip = 0x%lx, netaddr.inet.port = %d\n",
+             netaddr.inet.ip, netaddr.inet.port));
+    tcp_server_addr.inet.family = netaddr.inet.family;
+    tcp_server_addr.inet.port = netaddr.inet.port;
+    tcp_server_addr.inet.ip = netaddr.inet.ip;
+
+    /*
+     * Wake up parent thread because server address is bound and made
+     * available in the global variable 'tcp_server_addr'
+     */
+    PR_PostSem(sp->addr_sem);
+
+    for (i = 0; i < num_transmitfile_clients ; i++) {
+        /* test both null and non-null 'addr' argument to PR_Accept */
+        PRNetAddr *addrp = (i%2 ? &netaddr: NULL);
+
+        if ((newsockfd = PR_Accept(sockfd, addrp,
+                                   PR_INTERVAL_NO_TIMEOUT)) == NULL) {
+            fprintf(stderr,
+                    "prsocket_test: ERROR - PR_Accept failed\n");
+            failed_already=1;
+            goto exit;
+        }
+        /* test both regular and emulated PR_SendFile */
+        if (i%2) {
+            PRFileDesc *layer = PR_CreateIOLayerStub(
+                                    emuSendFileIdentity, &emuSendFileMethods);
+            if (layer == NULL) {
+                fprintf(stderr,
+                        "prsocket_test: ERROR - PR_CreateIOLayerStub failed\n");
+                failed_already=1;
+                goto exit;
+            }
+            if (PR_PushIOLayer(newsockfd, PR_TOP_IO_LAYER, layer)
+                == PR_FAILURE) {
+                fprintf(stderr,
+                        "prsocket_test: ERROR - PR_PushIOLayer failed\n");
+                failed_already=1;
+                goto exit;
+            }
+        }
+        scp = PR_NEW(Serve_Client_Param);
+        if (scp == NULL) {
+            fprintf(stderr,"prsocket_test: PR_NEW failed\n");
+            failed_already=1;
+            goto exit;
+        }
+
+        /*
+         * Start a Serve_Client thread for each incoming connection
+         */
+        scp->sockfd = newsockfd;
+        scp->datalen = sp->datalen;
+
+        t[i] = PR_CreateThread(PR_USER_THREAD,
+                               Serve_TransmitFile_Client, (void *)scp,
+                               PR_PRIORITY_NORMAL,
+                               PR_LOCAL_THREAD,
+                               PR_JOINABLE_THREAD,
+                               0);
+        if (t[i] == NULL) {
+            fprintf(stderr,
+                    "prsocket_test: PR_CreateThread failed\n");
+            failed_already=1;
+            goto exit;
+        }
+        DPRINTF(("TransmitFile_Server: Created Serve_TransmitFile_Client = 0x%lx\n", t));
+    }
+
+    /*
+     * Wait for all the worker threads to end, so that we know
+     * they are no longer using the small and large file fd's.
+     */
+
+    for (i = 0; i < num_transmitfile_clients; i++) {
+        PR_JoinThread(t[i]);
+    }
+
+exit:
+    if (t) {
+        PR_DELETE(t);
+    }
+    if (sockfd) {
+        PR_Close(sockfd);
+    }
+
+    /*
+     * Decrement exit_counter and notify parent thread
+     */
+
+    PR_EnterMonitor(sp->exit_mon);
+    --(*sp->exit_counter);
+    PR_Notify(sp->exit_mon);
+    PR_ExitMonitor(sp->exit_mon);
+    DPRINTF(("TransmitFile_Server [0x%lx] exiting\n", PR_GetCurrentThread()));
+}
+
+/*
+ * Socket_Misc_Test    - test miscellaneous functions
+ *
+ */
+static PRInt32
+Socket_Misc_Test(void)
+{
+    PRIntn i, rv = 0, bytes, count, len;
+    PRThread *t;
+    PRSemaphore *server_sem;
+    Server_Param *sparamp;
+    Client_Param *cparamp;
+    PRMonitor *mon2;
+    PRInt32    datalen;
+
+    /*
+    * We deliberately pick a buffer size that is not a nice multiple
+    * of 1024.
+    */
+#define TRANSMITFILE_BUF_SIZE    (4 * 1024 - 11)
+
+    typedef struct {
+        char    data[TRANSMITFILE_BUF_SIZE];
+    } file_buf;
+    file_buf *buf = NULL;
+
+    /*
+     * create file(s) to be transmitted
+     */
+    if ((PR_MkDir(TEST_DIR, 0777)) < 0) {
+        printf("prsocket_test failed to create dir %s\n",TEST_DIR);
+        failed_already=1;
+        return -1;
+    }
+
+    small_file_fd = PR_Open(SMALL_FILE_NAME, PR_RDWR | PR_CREATE_FILE,0777);
+
+    if (small_file_fd == NULL) {
+        fprintf(stderr,"prsocket_test failed to create/open file %s\n",
+                SMALL_FILE_NAME);
+        failed_already=1;
+        rv = -1;
+        goto done;
+    }
+    buf = PR_NEW(file_buf);
+    if (buf == NULL) {
+        fprintf(stderr,"prsocket_test failed to allocate buffer\n");
+        failed_already=1;
+        rv = -1;
+        goto done;
+    }
+    /*
+     * fill in random data
+     */
+    for (i = 0; i < TRANSMITFILE_BUF_SIZE; i++) {
+        buf->data[i] = i;
+    }
+    count = 0;
+    do {
+        len = (SMALL_FILE_SIZE - count) > TRANSMITFILE_BUF_SIZE ?
+              TRANSMITFILE_BUF_SIZE : (SMALL_FILE_SIZE - count);
+        bytes = PR_Write(small_file_fd, buf->data, len);
+        if (bytes <= 0) {
+            fprintf(stderr,
+                    "prsocket_test failed to write to file %s\n",
+                    SMALL_FILE_NAME);
+            failed_already=1;
+            rv = -1;
+            goto done;
+        }
+        count += bytes;
+    } while (count < SMALL_FILE_SIZE);
+#ifdef XP_UNIX
+    /*
+     * map the small file; used in checking for data corruption
+     */
+    small_file_addr = mmap(0, SMALL_FILE_SIZE, PROT_READ,
+                           MAP_SHARED, small_file_fd->secret->md.osfd, 0);
+    if (small_file_addr == (void *) -1) {
+        fprintf(stderr,"prsocket_test failed to mmap file %s\n",
+                SMALL_FILE_NAME);
+        failed_already=1;
+        rv = -1;
+        goto done;
+    }
+#endif
+    /*
+     * header for small file
+     */
+    small_file_header = PR_MALLOC(SMALL_FILE_HEADER_SIZE);
+    if (small_file_header == NULL) {
+        fprintf(stderr,"prsocket_test failed to malloc header file\n");
+        failed_already=1;
+        rv = -1;
+        goto done;
+    }
+    memset(small_file_header, (int) PR_IntervalNow(),
+           SMALL_FILE_HEADER_SIZE);
+    /*
+     * trailer for small file
+     */
+    small_file_trailer = PR_MALLOC(SMALL_FILE_TRAILER_SIZE);
+    if (small_file_trailer == NULL) {
+        fprintf(stderr,"prsocket_test failed to malloc header trailer\n");
+        failed_already=1;
+        rv = -1;
+        goto done;
+    }
+    memset(small_file_trailer, (int) PR_IntervalNow(),
+           SMALL_FILE_TRAILER_SIZE);
+    /*
+     * setup large file
+     */
+    large_file_fd = PR_Open(LARGE_FILE_NAME, PR_RDWR | PR_CREATE_FILE,0777);
+
+    if (large_file_fd == NULL) {
+        fprintf(stderr,"prsocket_test failed to create/open file %s\n",
+                LARGE_FILE_NAME);
+        failed_already=1;
+        rv = -1;
+        goto done;
+    }
+    /*
+     * fill in random data
+     */
+    for (i = 0; i < TRANSMITFILE_BUF_SIZE; i++) {
+        buf->data[i] = i;
+    }
+    count = 0;
+    do {
+        len = (LARGE_FILE_SIZE - count) > TRANSMITFILE_BUF_SIZE ?
+              TRANSMITFILE_BUF_SIZE : (LARGE_FILE_SIZE - count);
+        bytes = PR_Write(large_file_fd, buf->data, len);
+        if (bytes <= 0) {
+            fprintf(stderr,
+                    "prsocket_test failed to write to file %s: (%ld, %ld)\n",
+                    LARGE_FILE_NAME,
+                    PR_GetError(), PR_GetOSError());
+            failed_already=1;
+            rv = -1;
+            goto done;
+        }
+        count += bytes;
+    } while (count < LARGE_FILE_SIZE);
+#if defined(XP_UNIX)
+    /*
+     * map the large file; used in checking for data corruption
+     */
+    large_file_addr = mmap(0, LARGE_FILE_SIZE, PROT_READ,
+                           MAP_SHARED, large_file_fd->secret->md.osfd, 0);
+    if (large_file_addr == (void *) -1) {
+        fprintf(stderr,"prsocket_test failed to mmap file %s\n",
+                LARGE_FILE_NAME);
+        failed_already=1;
+        rv = -1;
+        goto done;
+    }
+#endif
+    /*
+     * header for large file
+     */
+    large_file_header = PR_MALLOC(LARGE_FILE_HEADER_SIZE);
+    if (large_file_header == NULL) {
+        fprintf(stderr,"prsocket_test failed to malloc header file\n");
+        failed_already=1;
+        rv = -1;
+        goto done;
+    }
+    memset(large_file_header, (int) PR_IntervalNow(),
+           LARGE_FILE_HEADER_SIZE);
+    /*
+     * trailer for large file
+     */
+    large_file_trailer = PR_MALLOC(LARGE_FILE_TRAILER_SIZE);
+    if (large_file_trailer == NULL) {
+        fprintf(stderr,"prsocket_test failed to malloc header trailer\n");
+        failed_already=1;
+        rv = -1;
+        goto done;
+    }
+    memset(large_file_trailer, (int) PR_IntervalNow(),
+           LARGE_FILE_TRAILER_SIZE);
+
+    datalen = tcp_mesg_size;
+    thread_count = 0;
+    /*
+     * start the server thread
+     */
+    sparamp = PR_NEW(Server_Param);
+    if (sparamp == NULL) {
+        fprintf(stderr,"prsocket_test: PR_NEW failed\n");
+        failed_already=1;
+        rv = -1;
+        goto done;
+    }
+    server_sem = PR_NewSem(0);
+    if (server_sem == NULL) {
+        fprintf(stderr,"prsocket_test: PR_NewSem failed\n");
+        failed_already=1;
+        rv = -1;
+        goto done;
+    }
+    mon2 = PR_NewMonitor();
+    if (mon2 == NULL) {
+        fprintf(stderr,"prsocket_test: PR_NewMonitor failed\n");
+        failed_already=1;
+        rv = -1;
+        goto done;
+    }
+    PR_EnterMonitor(mon2);
+
+    sparamp->addr_sem = server_sem;
+    sparamp->exit_mon = mon2;
+    sparamp->exit_counter = &thread_count;
+    sparamp->datalen = datalen;
+    t = PR_CreateThread(PR_USER_THREAD,
+                        TransmitFile_Server, (void *)sparamp,
+                        PR_PRIORITY_NORMAL,
+                        PR_LOCAL_THREAD,
+                        PR_UNJOINABLE_THREAD,
+                        0);
+    if (t == NULL) {
+        fprintf(stderr,"prsocket_test: PR_CreateThread failed\n");
+        failed_already=1;
+        rv = -1;
+        goto done;
+    }
+    DPRINTF(("Created TCP server = 0x%x\n", t));
+    thread_count++;
+
+    /*
+     * wait till the server address is setup
+     */
+    PR_WaitSem(server_sem);
+
+    /*
+     * Now start a bunch of client threads
+     */
+
+    cparamp = PR_NEW(Client_Param);
+    if (cparamp == NULL) {
+        fprintf(stderr,"prsocket_test: PR_NEW failed\n");
+        failed_already=1;
+        rv = -1;
+        goto done;
+    }
+    cparamp->server_addr = tcp_server_addr;
+    cparamp->server_addr.inet.ip = PR_htonl(PR_INADDR_LOOPBACK);
+    cparamp->exit_mon = mon2;
+    cparamp->exit_counter = &thread_count;
+    cparamp->datalen = datalen;
+    for (i = 0; i < num_transmitfile_clients; i++) {
+        t = create_new_thread(PR_USER_THREAD,
+                              TransmitFile_Client, (void *) cparamp,
+                              PR_PRIORITY_NORMAL,
+                              PR_LOCAL_THREAD,
+                              PR_UNJOINABLE_THREAD,
+                              0, i);
+        if (t == NULL) {
+            fprintf(stderr,"prsocket_test: PR_CreateThread failed\n");
+            rv = -1;
+            failed_already=1;
+            goto done;
+        }
+        DPRINTF(("Created TransmitFile client = 0x%lx\n", t));
+        thread_count++;
+    }
+    /* Wait for server and client threads to exit */
+    while (thread_count) {
+        PR_Wait(mon2, PR_INTERVAL_NO_TIMEOUT);
+        DPRINTF(("Socket_Misc_Test - thread_count  = %d\n", thread_count));
+    }
+    PR_ExitMonitor(mon2);
+done:
+    if (buf) {
+        PR_DELETE(buf);
+    }
+#if defined(XP_UNIX)
+    munmap((char*)small_file_addr, SMALL_FILE_SIZE);
+    munmap((char*)large_file_addr, LARGE_FILE_SIZE);
+#endif
+    PR_Close(small_file_fd);
+    PR_Close(large_file_fd);
+    if ((PR_Delete(SMALL_FILE_NAME)) == PR_FAILURE) {
+        fprintf(stderr,"prsocket_test: failed to unlink file %s\n",
+                SMALL_FILE_NAME);
+        failed_already=1;
+    }
+    if ((PR_Delete(LARGE_FILE_NAME)) == PR_FAILURE) {
+        fprintf(stderr,"prsocket_test: failed to unlink file %s\n",
+                LARGE_FILE_NAME);
+        failed_already=1;
+    }
+    if ((PR_RmDir(TEST_DIR)) == PR_FAILURE) {
+        fprintf(stderr,"prsocket_test failed to rmdir %s: (%ld, %ld)\n",
+                TEST_DIR, PR_GetError(), PR_GetOSError());
+        failed_already=1;
+    }
+
+    printf("%-29s%s","Socket_Misc_Test",":");
+    printf("%2d Server %2d Clients\n",1, num_transmitfile_clients);
+    printf("%30s Sizes of Transmitted Files  - %4d KB, %2d MB \n",":",
+           SMALL_FILE_SIZE/1024, LARGE_FILE_SIZE/(1024 * 1024));
+
+
+    return rv;
+}
+/************************************************************************/
+
+/*
+ * Test Socket NSPR APIs
+ */
+
+int main(int argc, char **argv)
+{
+    /*
+     * -d           debug mode
+     */
+
+    PLOptStatus os;
+    PLOptState *opt = PL_CreateOptState(argc, argv, "d");
+    while (PL_OPT_EOL != (os = PL_GetNextOpt(opt)))
+    {
+        if (PL_OPT_BAD == os) {
+            continue;
+        }
+        switch (opt->option)
+        {
+            case 'd':  /* debug mode */
+                _debug_on = 1;
+                break;
+            default:
+                break;
+        }
+    }
+    PL_DestroyOptState(opt);
+
+    PR_Init(PR_USER_THREAD, PR_PRIORITY_NORMAL, 0);
+    PR_STDIO_INIT();
+
+    PR_SetConcurrency(4);
+
+    emuSendFileIdentity = PR_GetUniqueIdentity("Emulated SendFile");
+    emuSendFileMethods = *PR_GetDefaultIOMethods();
+    emuSendFileMethods.transmitfile = emu_TransmitFile;
+    emuSendFileMethods.sendfile = emu_SendFile;
+
+    /*
+     * run client-server test with TCP, Ipv4-Ipv4
+     */
+    printf("TCP Client/Server Test - IPv4/Ipv4\n");
+    if (TCP_Socket_Client_Server_Test() < 0) {
+        printf("TCP_Socket_Client_Server_Test failed\n");
+        goto done;
+    } else {
+        printf("TCP_Socket_Client_Server_Test Passed\n");
+    }
+    /*
+     * client-server test, Ipv6-Ipv4
+     */
+    client_domain = PR_AF_INET6;
+    printf("TCP Client/Server Test - IPv6/Ipv4\n");
+    if (TCP_Socket_Client_Server_Test() < 0) {
+        printf("TCP_Socket_Client_Server_Test failed\n");
+        goto done;
+    } else {
+        printf("TCP_Socket_Client_Server_Test Passed\n");
+    }
+    /*
+     * client-server test, Ipv4-Ipv6
+     */
+    client_domain = PR_AF_INET;
+    server_domain = PR_AF_INET6;
+    printf("TCP Client/Server Test - IPv4/Ipv6\n");
+    if (TCP_Socket_Client_Server_Test() < 0) {
+        printf("TCP_Socket_Client_Server_Test failed\n");
+        goto done;
+    } else {
+        printf("TCP_Socket_Client_Server_Test Passed\n");
+    }
+    /*
+     * client-server test, Ipv6-Ipv6
+     */
+    client_domain = PR_AF_INET6;
+    server_domain = PR_AF_INET6;
+    printf("TCP Client/Server Test - IPv6/Ipv6\n");
+    if (TCP_Socket_Client_Server_Test() < 0) {
+        printf("TCP_Socket_Client_Server_Test failed\n");
+        goto done;
+    } else {
+        printf("TCP_Socket_Client_Server_Test Passed\n");
+    }
+    test_cancelio = 0;
+
+    /*
+     * Misc socket tests - including transmitfile, etc.
+     */
+
+    /* File transmission test can not be done in Symbian OS because of
+     * large file's size and the incomplete mmap() implementation. */
+#if !defined(WIN16)
+    /*
+    ** The 'transmit file' test does not run because
+    ** transmit file is not implemented in NSPR yet.
+    **
+    */
+    if (Socket_Misc_Test() < 0) {
+        printf("Socket_Misc_Test failed\n");
+        failed_already=1;
+        goto done;
+    } else {
+        printf("Socket_Misc_Test passed\n");
+    }
+
+    /*
+     * run client-server test with TCP again to test
+     * recycling used sockets from PR_TransmitFile().
+     */
+    if (TCP_Socket_Client_Server_Test() < 0) {
+        printf("TCP_Socket_Client_Server_Test failed\n");
+        goto done;
+    } else {
+        printf("TCP_Socket_Client_Server_Test Passed\n");
+    }
+#endif
+
+done:
+    PR_Cleanup();
+    if (failed_already) {
+        return 1;
+    }
+    else {
+        return 0;
+    }
+}