5ddc335a7f
Add a couple of socket examples that can be used with WAMR: - The `timeout_client` and `timeout_server` examples demonstrate socket send and receive timeouts using the socket options - The `multicast_client` and `multicast_server` examples demonstrate receiving multicast packets in WASM And add several macro controls for `socket_opts` example.
112 lines
2.9 KiB
C
112 lines
2.9 KiB
C
/*
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* Copyright (C) 2022 Amazon.com Inc. or its affiliates. All rights reserved.
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* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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*/
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#include <arpa/inet.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/socket.h>
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#include <sys/time.h>
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#include <unistd.h>
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#ifdef __wasi__
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#include <wasi_socket_ext.h>
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#endif
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int
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main(int argc, char *argv[])
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{
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int socket_fd;
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struct sockaddr_in addr;
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struct timeval tv = { 0, 1 };
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const int snd_buf_len = 8;
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const int data_buf_len = 1000000;
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char *buffer = (char *)malloc(sizeof(char) * data_buf_len);
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int result;
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socklen_t opt_len = sizeof(snd_buf_len);
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struct timeval snd_start_time, snd_end_time;
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int bool_opt = 1;
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if (buffer == NULL) {
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perror("Allocation failed, please re-run with larger heap size");
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return EXIT_FAILURE;
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}
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/* 127.0.0.1:1234 */
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addr.sin_family = AF_INET;
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addr.sin_port = htons(1234);
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addr.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
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if ((socket_fd = socket(AF_INET, SOCK_STREAM, 0)) == -1) {
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perror("Create socket failed");
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goto fail1;
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}
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if (setsockopt(socket_fd, SOL_SOCKET, SO_REUSEADDR, &bool_opt,
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sizeof(bool_opt))
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== -1) {
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perror("Failed setting SO_REUSEADDR");
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goto fail2;
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}
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if (setsockopt(socket_fd, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv)) == -1) {
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perror("Failed setting SO_RCVTIMEO");
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goto fail2;
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}
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if (setsockopt(socket_fd, SOL_SOCKET, SO_SNDTIMEO, &tv, sizeof(tv)) == -1) {
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perror("Failed setting SO_SNDTIMEO");
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goto fail2;
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}
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if (setsockopt(socket_fd, SOL_SOCKET, SO_SNDBUF, &data_buf_len,
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sizeof(data_buf_len))
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== -1) {
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perror("Failed setting SO_SNDBUF");
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goto fail2;
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}
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if (connect(socket_fd, (struct sockaddr *)&addr, sizeof(addr)) == -1) {
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perror("Connect failed");
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goto fail2;
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}
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if (getsockopt(socket_fd, SOL_SOCKET, SO_SNDBUF, (void *)&data_buf_len,
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&opt_len)
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== -1) {
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perror("Failed getting SO_SNDBUF");
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goto fail2;
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}
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printf("Waiting on recv, which should timeout\n");
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result = recv(socket_fd, buffer, 1, 0);
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if (result != -1 || errno != EAGAIN) {
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perror("Recv did not timeout as expected");
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goto fail2;
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}
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printf("Waiting on send, which should timeout\n");
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gettimeofday(&snd_start_time, NULL);
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result = send(socket_fd, buffer, data_buf_len, 0);
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gettimeofday(&snd_end_time, NULL);
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if (result >= data_buf_len
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|| snd_start_time.tv_sec != snd_end_time.tv_sec) {
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perror("Send did not timeout as expected");
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goto fail2;
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}
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printf("Success. Closing socket \n");
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close(socket_fd);
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free(buffer);
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return EXIT_SUCCESS;
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fail2:
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close(socket_fd);
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fail1:
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free(buffer);
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return EXIT_FAILURE;
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}
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