diff options
Diffstat (limited to 'fluent-bit/lib/wasm-micro-runtime-WAMR-1.2.2/samples/socket-api/wasm-src/multicast_server.c')
| -rw-r--r-- | fluent-bit/lib/wasm-micro-runtime-WAMR-1.2.2/samples/socket-api/wasm-src/multicast_server.c | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/fluent-bit/lib/wasm-micro-runtime-WAMR-1.2.2/samples/socket-api/wasm-src/multicast_server.c b/fluent-bit/lib/wasm-micro-runtime-WAMR-1.2.2/samples/socket-api/wasm-src/multicast_server.c new file mode 100644 index 000000000..cd33557b2 --- /dev/null +++ b/fluent-bit/lib/wasm-micro-runtime-WAMR-1.2.2/samples/socket-api/wasm-src/multicast_server.c @@ -0,0 +1,120 @@ +/* + * Copyright (C) 2022 Amazon.com Inc. or its affiliates. All rights reserved. + * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception + */ + +#include <arpa/inet.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/socket.h> +#include <unistd.h> +#ifdef __wasi__ +#include <wasi_socket_ext.h> +#endif + +static int +get_ip_addr_type(char *addr, char *buf) +{ + if (inet_pton(AF_INET6, addr, buf)) { + return AF_INET6; + } + if (inet_pton(AF_INET, addr, buf)) { + return AF_INET; + } + return -1; +} + +static int +is_valid_addr_type(int addr_type) +{ + return !(addr_type == -1 + || (addr_type != AF_INET && addr_type != AF_INET6)); +} + +static void +init_sockaddr_inet(struct sockaddr_in *addr, char *addr_buffer) +{ + addr->sin_family = AF_INET; + addr->sin_port = htons(1234); + memcpy(&(addr->sin_addr), addr_buffer, 4); +} + +static void +init_sockaddr_inet6(struct sockaddr_in6 *addr, char *addr_buffer) +{ + addr->sin6_family = AF_INET6; + addr->sin6_port = htons(1234); + memcpy(&(addr->sin6_addr), addr_buffer, 16); +} + +int +main(int argc, char *argv[]) +{ + struct sockaddr_storage addr = { 0 }; + int sd; + char *databuf = "Test message"; + int datalen = strlen(databuf) + 1; + char multicast_addr_buffer[16]; + int addr_type = -1; + int multicast_interface; + int bool_opt = 1; + + if (argc < 2) { + printf("Usage is <Multicast IP>\n"); + return EXIT_FAILURE; + } + + addr_type = get_ip_addr_type(argv[1], multicast_addr_buffer); + + if (!is_valid_addr_type(addr_type)) { + printf("Not a valid ipv4 or ipv6 address\n"); + return EXIT_FAILURE; + } + + if ((sd = socket(addr_type, SOCK_DGRAM, 0)) == -1) { + return EXIT_FAILURE; + } + + if (setsockopt(sd, SOL_SOCKET, SO_REUSEADDR, &bool_opt, sizeof(bool_opt)) + == -1) { + perror("Failed setting SO_REUSEADDR"); + goto fail; + } + + if (addr_type == AF_INET) { + multicast_interface = htonl(INADDR_ANY); + if (setsockopt(sd, IPPROTO_IP, IP_MULTICAST_IF, + (char *)&multicast_interface, + sizeof(multicast_interface))) { + perror("Failed setting local interface"); + goto fail; + } + init_sockaddr_inet((struct sockaddr_in *)&addr, multicast_addr_buffer); + } + else { + multicast_interface = 0; + if (setsockopt(sd, IPPROTO_IPV6, IPV6_MULTICAST_IF, + (char *)&multicast_interface, + sizeof(multicast_interface))) { + perror("Failed setting local interface"); + goto fail; + } + init_sockaddr_inet6((struct sockaddr_in6 *)&addr, + multicast_addr_buffer); + } + + if (sendto(sd, databuf, datalen, 0, (struct sockaddr *)&addr, sizeof(addr)) + == -1) { + perror("Failed sending datagram"); + goto fail; + } + + printf("Datagram sent\n"); + close(sd); + return EXIT_SUCCESS; + +fail: + close(sd); + return EXIT_FAILURE; +}
\ No newline at end of file |