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https://github.com/bytecodealliance/wasm-micro-runtime.git
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9c87a1ee17
Refer to [Networking API design](https://github.com/WebAssembly/WASI/issues/370) and [feat(socket): berkeley socket API v2](https://github.com/WebAssembly/WASI/pull/459): - Support the socket API of synchronous mode, including `socket/bind/listen/accept/send/recv/close/shutdown`, the asynchronous mode isn't supported yet. - Support adding `--addr-pool=<pool1,pool2,..>` argument for command line to identify the valid ip address range - Add socket-api sample and update the document
119 lines
2.9 KiB
C
119 lines
2.9 KiB
C
/*
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* Copyright (C) 2019 Intel Corporation. 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 <netinet/in.h>
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#include <pthread.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <string.h>
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#include <sys/socket.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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#define WORKER_NUM 5
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void *
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run(void *arg)
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{
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const char *message = "Say Hi from the Server\n";
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int new_socket = *(int *)arg;
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int i;
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printf("[Server] Communicate with the new connection #%u @ %p ..\n",
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new_socket, (void *)(uintptr_t)pthread_self());
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for (i = 0; i < 5; i++) {
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if (send(new_socket, message, strlen(message), 0) < 0) {
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perror("Send failed");
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break;
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}
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}
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printf("[Server] Shuting down the new connection #%u ..\n", new_socket);
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shutdown(new_socket, SHUT_RDWR);
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return NULL;
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}
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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 = -1, addrlen = 0;
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struct sockaddr_in addr = { 0 };
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unsigned connections = 0;
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pthread_t workers[WORKER_NUM] = { 0 };
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int client_sock_fds[WORKER_NUM] = { 0 };
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printf("[Server] Create socket\n");
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socket_fd = socket(AF_INET, SOCK_STREAM, 0);
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if (socket_fd < 0) {
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perror("Create socket failed");
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goto fail;
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}
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/* 0.0.0.0:1234 */
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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_ANY);
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printf("[Server] Bind socket\n");
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addrlen = sizeof(addr);
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if (bind(socket_fd, (struct sockaddr *)&addr, addrlen) < 0) {
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perror("Bind failed");
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goto fail;
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}
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printf("[Server] Listening on socket\n");
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if (listen(socket_fd, 3) < 0) {
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perror("Listen failed");
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goto fail;
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}
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printf("[Server] Wait for clients to connect ..\n");
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while (connections < WORKER_NUM) {
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client_sock_fds[connections] =
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accept(socket_fd, (struct sockaddr *)&addr, (socklen_t *)&addrlen);
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if (client_sock_fds[connections] < 0) {
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perror("Accept failed");
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break;
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}
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printf("[Server] Client connected\n");
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if (pthread_create(&workers[connections], NULL, run,
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&client_sock_fds[connections])) {
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perror("Create a worker thread failed");
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shutdown(client_sock_fds[connections], SHUT_RDWR);
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break;
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}
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connections++;
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}
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if (connections == WORKER_NUM) {
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printf("[Server] Achieve maximum amount of connections\n");
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}
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for (int i = 0; i < WORKER_NUM; i++) {
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pthread_join(workers[i], NULL);
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}
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printf("[Server] Shuting down ..\n");
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shutdown(socket_fd, SHUT_RDWR);
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sleep(3);
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printf("[Server] BYE \n");
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return EXIT_SUCCESS;
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fail:
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printf("[Server] Shuting down ..\n");
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if (socket_fd >= 0)
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close(socket_fd);
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sleep(3);
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return EXIT_FAILURE;
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}
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