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|
/*****************************************************************
|
| Neptune Utilities - Network Echo Server
|
| (c) 2001-2005 Gilles Boccon-Gibod
| Author: Gilles Boccon-Gibod (bok@bok.net)
|
****************************************************************/
/*----------------------------------------------------------------------
| includes
+---------------------------------------------------------------------*/
#include "NptConfig.h"
#include "Neptune.h"
#include "NptDebug.h"
#if defined(NPT_CONFIG_HAVE_STDLIB_H)
#include <stdlib.h>
#endif
#if defined(NPT_CONFIG_HAVE_STRING_H)
#include <string.h>
#endif
#if defined(NPT_CONFIG_HAVE_STDIO_H)
#include <stdio.h>
#endif
/*----------------------------------------------------------------------
| types
+---------------------------------------------------------------------*/
typedef enum {
SERVER_TYPE_UNKNOWN,
SERVER_TYPE_UDP,
SERVER_TYPE_TCP
} ServerType;
/*----------------------------------------------------------------------
| globals
+---------------------------------------------------------------------*/
static struct {
bool verbose;
} Options;
/*----------------------------------------------------------------------
| PrintUsageAndExit
+---------------------------------------------------------------------*/
static void
PrintUsageAndExit(void)
{
fprintf(stderr,
"usage: NetEcho udp|tcp <port>\n");
exit(1);
}
/*----------------------------------------------------------------------
| UdpServerLoop
+---------------------------------------------------------------------*/
static void
UdpServerLoop(int port)
{
NPT_UdpSocket listener;
// info
if (Options.verbose) {
printf("listening on port %d\n", port);
}
NPT_Result result = listener.Bind(NPT_SocketAddress(NPT_IpAddress::Any, port));
if (NPT_FAILED(result)) {
fprintf(stderr, "ERROR: Bind() failed (%d : %s)\n", result, NPT_ResultText(result));
return;
}
// packet loop
NPT_DataBuffer packet(32768);
NPT_SocketAddress address;
do {
result = listener.Receive(packet, &address);
if (NPT_SUCCEEDED(result)) {
if (Options.verbose) {
NPT_String ip = address.GetIpAddress().ToString();
printf("Received %d bytes from %s:%d\n", packet.GetDataSize(), ip.GetChars(), address.GetPort());
}
listener.Send(packet, &address);
}
} while (NPT_SUCCEEDED(result));
}
/*----------------------------------------------------------------------
| TcpServerLoop
+---------------------------------------------------------------------*/
static void
TcpServerLoop(int port)
{
NPT_TcpServerSocket listener;
NPT_Result result = listener.Bind(NPT_SocketAddress(NPT_IpAddress::Any, port));
if (NPT_FAILED(result)) {
fprintf(stderr, "ERROR: Bind() failed (%d : %s)\n", result, NPT_ResultText(result));
return;
}
NPT_Socket* client;
for (;;) {
printf("waiting for client on port %d\n", port);
result = listener.WaitForNewClient(client);
NPT_SocketInfo socket_info;
client->GetInfo(socket_info);
printf("client connected from %s port %d\n",
socket_info.remote_address.GetIpAddress().ToString().GetChars(),
socket_info.remote_address.GetPort());
NPT_InputStreamReference input;
client->GetInputStream(input);
NPT_OutputStreamReference output;
client->GetOutputStream(output);
do {
char buffer[1024];
NPT_Size bytes_read;
result = input->Read(buffer, sizeof(buffer), &bytes_read);
if (NPT_SUCCEEDED(result)) {
printf("read %d bytes\n", bytes_read);
output->Write(buffer, bytes_read);
}
} while (NPT_SUCCEEDED(result));
delete client;
}
}
/*----------------------------------------------------------------------
| main
+---------------------------------------------------------------------*/
int
main(int argc, char** argv)
{
// check command line
if (argc != 3) {
PrintUsageAndExit();
}
// init options
Options.verbose = true;
ServerType server_type = SERVER_TYPE_UNKNOWN;
int port = -1;
// parse command line
if (!strcmp(argv[1], "udp")) {
server_type = SERVER_TYPE_UDP;
} else if (!strcmp(argv[1], "tcp")) {
server_type = SERVER_TYPE_TCP;
} else {
fprintf(stderr, "ERROR: unknown server type\n");
exit(1);
}
port = strtoul(argv[2], NULL, 10);
switch (server_type) {
case SERVER_TYPE_TCP: TcpServerLoop(port); break;
case SERVER_TYPE_UDP: UdpServerLoop(port); break;
default: break;
}
return 0;
}
|
