解释如下代码 WORD wVersionRequested; WSADATA wsaData; int nRetCode = 0; int socketfd = -1; int nErrorCode; struct sockaddr_in destSocketAddr; int nBytesTx; char szMsg[128] = "hello tcpip 2020023606"; char bRcvBuf[1500]; struct sockaddr_in srcSocketAddr; int nLen; int nBytesRx; char *pszIp; WORD port; int i; struct sockaddr_in MySocketAddr; wVersionRequested = 0x0202; nRetCode = WSAStartup(wVersionRequested, &wsaData); if (nRetCode != 0) { printf("WSAStartup failed with error: %d\n", nRetCode); return -1; } else { printf("WSAStartup sucess to startup\n"); } if(wsaData.wVersion != wVersionRequested) { printf("requied wVersion=0x%04x,returned wVersion=0x%04x,returned HighestVersion=0x%04x\n", wVersionRequested, wsaData.wVersion, wsaData.wHighVersion ); WSACleanup(); return -1; }

udp socket客户端和udp服务端程序示例分享

WORD wVersionRequested = MAKEWORD(1, 1); WSADATA wsaData; int err = WSAStartup(wVersionRequested, &wsaData); if (err != 0) { return -1; } // 创建socket SOCKET sockServer = socket(AF_INET, ...

C++ 中 socket编程实例详解

C++ 中 socket 编程实例详解 C++ 中的 socket 编程是一种常用的网络编程技术，用于在计算机网络中实现数据的传输和交流。 Socket 是一种标准的 API，提供了一个通用的接口来访问网络协议栈。 C++ 中的 socket 编程...

解释如下代码WORD wVersionRequested; WSADATA wsaData; int nRetCode23104 = 0; int socketfd23104 = -1; int nErrorCode23104; struct sockaddr_in destSocketAddr; int nBytesTx23104; char szMsg23104[128] = "hello tcpip 2020023606"; char bRcvBuf23104[1500]; struct sockaddr_in srcSocketAddr; int nLen23104; int nBytesRx23104; char* pszIp; WORD port; int i; struct sockaddr_in MySocketAddr; wVersionRequested = 0x0202; nRetCode23104 = WSAStartup(wVersionRequested, &wsaData);

一个 struct sockaddr_in 类型的 destSocketAddr，表示目标套接字地址；一个 int 类型的 nBytesTx23104，表示发送的字节数；一个 char 类型的 szMsg23104 数组，表示欲发送的消息；一个 char 类型的 bRcvBuf23104 ...

解释如下代码WORD wVersionRequested; WSADATA wsaData; int nRetCode = 0; int socketfd = -1; int nErrorCode; struct sockaddr_in destSocketAddr; int nBytesTx; char szMsg[128] = "hello tcpip 2020023606"; char bRcvBuf[1500]; struct sockaddr_in srcSocketAddr; int nLen; int nBytesRx; char *pszIp; WORD port; int i; struct sockaddr_in MySocketAddr; wVersionRequested = 0x0202; nRetCode = WSAStartup(wVersionRequested, &wsaData); if (nRetCode != 0) { printf("WSAStartup failed with error: %d\n", nRetCode); return -1; } else { printf("WSAStartup sucess to startup\n"); } if(wsaData.wVersion != wVersionRequested) { printf("requied wVersion=0x%04x,returned wVersion=0x%04x,returned HighestVersion=0x%04x\n", wVersionRequested, wsaData.wVersion, wsaData.wHighVersion ); WSACleanup(); return -1; } socketfd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP); if(socketfd <= 0) { printMsg_WSAGetLastError(); WSACleanup(); return -1; } else { printf("create socket success = %d\n", socketfd); } gSocketfd = socketfd;

，声明了一个int类型的变量socketfd，并初始化为-1，用于存储建立的套接字的描述符。 int nErrorCode;，声明了一个int类型的变量nErrorCode，用于存储错误码。 struct sockaddr_in destSocketAddr;，声明了一个...

int WinsockMatTransmissionServer::socketConnect(int PORT) { WORD wVersionRequested; WSADATA wsaData; int err; wVersionRequested = MAKEWORD(1, 1); err = WSAStartup(wVersionRequested, &wsaData); if (err != 0) { return -1; } if (LOBYTE(wsaData.wVersion) != 1 || HIBYTE(wsaData.wVersion) != 1) { WSACleanup(); return -1; } SOCKET sockSrv = socket(AF_INET, SOCK_STREAM, 0); SOCKADDR_IN addrSrv; addrSrv.sin_addr.S_un.S_addr = htonl(INADDR_ANY); addrSrv.sin_family = AF_INET; addrSrv.sin_port = htons(PORT); bind(sockSrv, (SOCKADDR)&addrSrv, sizeof(SOCKADDR)); listen(sockSrv, 5); SOCKADDR_IN addrClient; int len = sizeof(SOCKADDR); sockConn = accept(sockSrv, (SOCKADDR)&addrClient, &len); int nRecvBuf = 1024 * 1024 * 10; setsockopt(sockConn, SOL_SOCKET, SO_RCVBUF, (const char*)&nRecvBuf, sizeof(int));详细解释

这段代码实现了一个基于Winsock的Matlab数据传输的服务器端。具体功能如下： 1. 初始化Winsock库，检查库的版本是否符合要求。 2. 创建一个基于IPv4协议的流式套接字。 3. 绑定套接字到指定的IP地址和端口号上。 4....

客户端代码 #define _WINSOCK_DEPRECATED_NO_WARNINGS #include <stdio.h> #include <Winsock2.h> #ifndef MSG_NOSIGNAL #define MSG_NOSIGNAL 0 #endif #pragma comment(lib,"ws2_32.lib") int main() { WORD wVersionRequested; WSADATA wsaData; int err; wVersionRequested = MAKEWORD(1, 1); err = WSAStartup(wVersionRequested, &wsaData); if (err != 0) { return -1; } if (LOBYTE(wsaData.wVersion) != 1 || HIBYTE(wsaData.wVersion) != 1) { WSACleanup(); return -1; } SOCKET sockClient = socket(AF_INET, SOCK_STREAM, 0); SOCKADDR_IN addrSrv; addrSrv.sin_addr.S_un.S_addr = inet_addr("127.0.0.1"); addrSrv.sin_family = AF_INET; addrSrv.sin_port = htons(6000); connect(sockClient, (SOCKADDR)&addrSrv, sizeof(SOCKADDR)); send(sockClient, "hello\0", strlen("hello") + 1, 0); char recvBuf[50]; recv(sockClient, recvBuf, 50, 0); printf("%s\n", recvBuf); closesocket(sockClient); WSACleanup(); return 0;} 服务器端：#define _WINSOCK_DEPRECATED_NO_WARNINGS #include <stdio.h> #include <Winsock2.h> #ifndef MSG_NOSIGNAL #define MSG_NOSIGNAL 0 #endif #pragma comment(lib,"ws2_32.lib") int main() { WORD wVersionRequested; WSADATA wsaData; int err; wVersionRequested = MAKEWORD(2, 2); err = WSAStartup(wVersionRequested, &wsaData); if (err != 0) { return 1; } if (LOBYTE(wsaData.wVersion) != 2 || HIBYTE(wsaData.wVersion) != 2) { WSACleanup(); return 1; } SOCKET sockSrv = socket(AF_INET, SOCK_STREAM, 0); int optval = 1; setsockopt(sockSrv, SOL_SOCKET, SO_REUSEADDR, (const char)&optval, sizeof(optval)); SOCKADDR_IN addrSrv; addrSrv.sin_addr.S_un.S_addr = htonl(INADDR_ANY); addrSrv.sin_family = AF_INET; addrSrv.sin_port = htons(6000); bind(sockSrv, (SOCKADDR)&addrSrv, sizeof(SOCKADDR)); listen(sockSrv, 5); SOCKADDR_IN addrClient; int len = sizeof(SOCKADDR); while (1) { SOCKET sockConn = accept(sockSrv, (SOCKADDR)&addrClient, &len); char sendBuf[50]; printf(sendBuf, "Welcome %s to here!", inet_ntoa(addrClient.sin_addr)); send(sockConn, sendBuf, strlen(sendBuf) + 1, MSG_NOSIGNAL); char recvBuf[50]; recv(sockConn, recvBuf, 50, 0); printf("%s\n", recvBuf); closesocket(sockConn); } WSACleanup(); return 0;} 如何修改代码改成可以一直聊天的不要预输入进去的要我自己在客户端进行打字操作

要实现客户端和服务器之间的实时聊天，需要在客户端代码中添加一个循环来不断读取用户输入的消息，并将其发送给服务器。同时，在服务器端代码中也需要添加一个循环来不断接收客户端发送的消息，并将其广播给所有连接...

#include <stdio.h>#include <Winsock2.h>int main() { WORD wVersionRequested; WSADATA wsaData; int err; wVersionRequested = MAKEWORD(2, 2); err = WSAStartup(wVersionRequested, &wsaData); if (err != 0) { return 1; } if (LOBYTE(wsaData.wVersion) != 2 || HIBYTE(wsaData.wVersion) != 2) { WSACleanup(); return 1; } SOCKET sockSrv = socket(AF_INET, SOCK_STREAM, 0); int optval = 1; setsockopt(sockSrv, SOL_SOCKET, SO_REUSEADDR, (const char)&optval, sizeof(optval)); SOCKADDR_IN addrSrv; addrSrv.sin_addr.S_un.S_addr = htonl(INADDR_ANY); addrSrv.sin_family = AF_INET; addrSrv.sin_port = htons(6000); bind(sockSrv, (SOCKADDR)&addrSrv, sizeof(SOCKADDR)); listen(sockSrv, 5); SOCKADDR_IN addrClient; int len = sizeof(SOCKADDR); while (1) { SOCKET sockConn = accept(sockSrv, (SOCKADDR*)&addrClient, &len); char sendBuf[50]; sprintf(sendBuf, "Welcome %s to here!", inet_ntoa(addrClient.sin_addr)); send(sockConn, sendBuf, strlen(sendBuf) + 1, MSG_NOSIGNAL); char recvBuf[50]; recv(sockConn, recvBuf, 50, 0); printf("%s\n", recvBuf); closesocket(sockConn); } WSACleanup(); return 0;}你给我的这段代码中编译器无法识别MSG_NOSIGNAL这个标识符

MSG_NOSIGNAL是一种在Linux下使用的标识符，用于在发送数据时禁止发送SIGPIPE信号。在Windows下，该标识符不被支持，因此编译器无法...这样定义之后，MSG_NOSIGNAL在Windows下就会被定义为0，不会影响代码的正常编译。

为什么我运行了这段代码以后却什么都不显示呢#define _WINSOCK_DEPRECATED_NO_WARNINGS #include <stdio.h> #include <Winsock2.h> #ifndef MSG_NOSIGNAL #define MSG_NOSIGNAL 0 #endif #pragma comment(lib,"ws2_32.lib") int main() { WORD wVersionRequested; WSADATA wsaData; int err; wVersionRequested = MAKEWORD(2, 2); err = WSAStartup(wVersionRequested, &wsaData); if (err != 0) { return 1; } if (LOBYTE(wsaData.wVersion) != 2 || HIBYTE(wsaData.wVersion) != 2) { WSACleanup(); return 1; } SOCKET sockSrv = socket(AF_INET, SOCK_STREAM, 0); int optval = 1; setsockopt(sockSrv, SOL_SOCKET, SO_REUSEADDR, (const char)&optval, sizeof(optval)); SOCKADDR_IN addrSrv; addrSrv.sin_addr.S_un.S_addr = htonl(INADDR_ANY); addrSrv.sin_family = AF_INET; addrSrv.sin_port = htons(6000); bind(sockSrv, (SOCKADDR)&addrSrv, sizeof(SOCKADDR)); listen(sockSrv, 5); SOCKADDR_IN addrClient; int len = sizeof(SOCKADDR); while (1) { SOCKET sockConn = accept(sockSrv, (SOCKADDR*)&addrClient, &len); char sendBuf[50]; printf(sendBuf, "Welcome %s to here!", inet_ntoa(addrClient.sin_addr)); send(sockConn, sendBuf, strlen(sendBuf) + 1, MSG_NOSIGNAL); char recvBuf[50]; recv(sockConn, recvBuf, 50, 0); printf("%s\n", recvBuf); closesocket(sockConn); } WSACleanup(); return 0;}

这段代码是一个简单的TCP Server，它监听6000端口，当客户端连接到该端口时，它会向客户端发送一条欢迎消息并等待接收客户端的消息。在代码中，您没有在发送欢迎消息之前初始化sendBuf数组，因此它可能包含任意值...

#define _WINSOCK_DEPRECATED_NO_WARNINGS #include <stdio.h> #include <Winsock2.h> #ifndef MSG_NOSIGNAL #define MSG_NOSIGNAL 0 #endif #pragma comment(lib,"ws2_32.lib") void main() { WORD wVersionRequested; WSADATA wsaData; int err; wVersionRequested = MAKEWORD(1, 1); err = WSAStartup(wVersionRequested, &wsaData); if (err != 0) { return; } if (LOBYTE(wsaData.wVersion) != 1 || HIBYTE(wsaData.wVersion) != 1) { WSACleanup(); return; } SOCKET sockClient = socket(AF_INET, SOCK_STREAM, 0); SOCKADDR_IN addrSrv; addrSrv.sin_addr.S_un.S_addr = inet_addr("127.0.0.1"); addrSrv.sin_family = AF_INET; addrSrv.sin_port = htons(6000); connect(sockClient, (SOCKADDR*)&addrSrv, sizeof(SOCKADDR)); send(sockClient, "hello", strlen("hello") + 1, 0); char recvBuf[50]; recv(sockClient, recvBuf, 50, 0); printf("%s\n", recvBuf); closesocket(sockClient); WSACleanup(); }这段代码我的编译器vs编译后输出烫烫烫烫烫烫烫烫

这个问题可能是因为你发送的字符串没有以'\0'结尾，所以接收端无法正确地解析它。你可以尝试在发送时将字符串以如下方式发送： send(sockClient, "hello\0", strlen("hello") + 1, 0); 另外，你的main函数...

服务器端代码#define _WINSOCK_DEPRECATED_NO_WARNINGS #define _CRT_SECURE_NO_WARNINGS #include <stdio.h> #include <stdlib.h> #include <string.h> #include <WinSock2.h> #ifndef MSG_NOSIGNAL #define MSG_NOSIGNAL 0 #endif #pragma comment(lib,"ws2_32.lib") SOCKET g_clientSockets[10]; int g_clientCount = 0; DWORD WINAPI ClientThread(LPVOID lpParam) { SOCKET clientSocket = (SOCKET)lpParam; char recvBuf[50], sendBuf[50]; while (1) { // 接收客户端消息并处理 int ret = recv(clientSocket, recvBuf, 50, 0); if (ret <= 0) { break; } printf("Received message from client: %s\n", recvBuf); // 转发消息给所有客户端 for (int i = 0; i < g_clientCount; i++) { if (g_clientSockets[i] != clientSocket) { send(g_clientSockets[i], recvBuf, strlen(recvBuf) + 1, 0); } } } // 关闭客户端套接字 closesocket(clientSocket); // 从全局变量中移除该客户端套接字 for (int i = 0; i < g_clientCount; i++) { if (g_clientSockets[i] == clientSocket) { g_clientCount--; memmove(&g_clientSockets[i], &g_clientSockets[i + 1], (g_clientCount - i) * sizeof(SOCKET)); break; } } return 0; } int main() { WORD wVersionRequested; WSADATA wsaData; int err; wVersionRequested = MAKEWORD(1, 1); err = WSAStartup(wVersionRequested, &wsaData); if (err != 0) { return -1; } if (LOBYTE(wsaData.wVersion) != 1 || HIBYTE(wsaData.wVersion) != 1) { WSACleanup(); return -1; } // 创建套接字并绑定到本地地址 SOCKET sockSrv = socket(AF_INET, SOCK_STREAM, 0); SOCKADDR_IN addrSrv; addrSrv.sin_family = AF_INET; addrSrv.sin_addr.S_un.S_addr = htonl(INADDR_ANY); addrSrv.sin_port = htons(6000); bind(sockSrv, (SOCKADDR)&addrSrv, sizeof(SOCKADDR)); // 开始监听客户端连接请求 listen(sockSrv, 5); while (1) { // 接受客户端连接并处理消息 SOCKADDR_IN addrClient; int len = sizeof(SOCKADDR); SOCKET sockConn = accept(sockSrv, (SOCKADDR)&addrClient, &len); // 将新连接的客户端套接字加入全局变量 g_clientSockets[g_clientCount++] = sockConn; // 创建新线程来处理该客户端的消息 HANDLE hThread = CreateThread(NULL, 0, ClientThread, &sockConn, 0, NULL); // 关闭线程句柄 CloseHandle(hThread); } closesocket(sockSrv); WSACleanup(); return 0; }

这段代码是一个简单的服务器端代码，主要功能是接受客户端连接，并将客户端发送的消息转发给其他客户端。它使用了 WinSock2 库来进行网络编程。在主函数中，首先调用了 WSACleanup() 函数来释放 WinSock2 库占用的...

这是服务端代码#define _WINSOCK_DEPRECATED_NO_WARNINGS #define _CRT_SECURE_NO_WARNINGS #include <stdio.h> #include <stdlib.h> #include <string.h> #include <WinSock2.h> #ifndef MSG_NOSIGNAL #define MSG_NOSIGNAL 0 #endif #pragma comment(lib,"ws2_32.lib") SOCKET g_clientSockets[10]; int g_clientCount = 0; DWORD WINAPI ClientThread(LPVOID lpParam) { SOCKET clientSocket = (SOCKET)lpParam; char recvBuf[50], sendBuf[50]; while (1) { // 接收客户端消息并处理 int ret = recv(clientSocket, recvBuf, 50, 0); if (ret <= 0) { break; } printf("Received message from client: %s\n", recvBuf); // 转发消息给所有客户端 for (int i = 0; i < g_clientCount; i++) { if (g_clientSockets[i] != clientSocket) { send(g_clientSockets[i], recvBuf, strlen(recvBuf) + 1, 0); } } } // 关闭客户端套接字 closesocket(clientSocket); // 从全局变量中移除该客户端套接字 for (int i = 0; i < g_clientCount; i++) { if (g_clientSockets[i] == clientSocket) { g_clientCount--; memmove(&g_clientSockets[i], &g_clientSockets[i + 1], (g_clientCount - i) * sizeof(SOCKET)); break; } } return 0; } int main() { WORD wVersionRequested; WSADATA wsaData; int err; wVersionRequested = MAKEWORD(1, 1); err = WSAStartup(wVersionRequested, &wsaData); if (err != 0) { return -1; } if (LOBYTE(wsaData.wVersion) != 1 || HIBYTE(wsaData.wVersion) != 1) { WSACleanup(); return -1; } // 创建套接字并绑定到本地地址 SOCKET sockSrv = socket(AF_INET, SOCK_STREAM, 0); SOCKADDR_IN addrSrv; addrSrv.sin_family = AF_INET; addrSrv.sin_addr.S_un.S_addr = htonl(INADDR_ANY); addrSrv.sin_port = htons(6000); bind(sockSrv, (SOCKADDR)&addrSrv, sizeof(SOCKADDR)); // 开始监听客户端连接请求 listen(sockSrv, 5); while (1) { // 接受客户端连接并处理消息 SOCKADDR_IN addrClient; int len = sizeof(SOCKADDR); SOCKET sockConn = accept(sockSrv, (SOCKADDR)&addrClient, &len); // 将新连接的客户端套接字加入全局变量 g_clientSockets[g_clientCount++] = sockConn; // 创建新线程来处理该客户端的消息 HANDLE hThread = CreateThread(NULL, 0, ClientThread, &sockConn, 0, NULL); // 关闭线程句柄 CloseHandle(hThread); } closesocket(sockSrv); WSACleanup(); return 0; }

这是一个简单的基于 Windows 平台的多客户端聊天室的服务端代码，使用了 WinSock2 库进行网络通信。主要功能包括创建套接字并绑定到本地地址、监听客户端连接请求、接受客户端连接并处理消息、将新连接的客户端套接...

#define _WINSOCK_DEPRECATED_NO_WARNINGS#include <stdio.h>#include <Winsock2.h>#ifndef MSG_NOSIGNAL#define MSG_NOSIGNAL 0#endif#pragma comment(lib,"ws2_32.lib")int main() { WORD wVersionRequested; WSADATA wsaData; int err; wVersionRequested = MAKEWORD(2, 2); err = WSAStartup(wVersionRequested, &wsaData); if (err != 0) { return 1; } if (LOBYTE(wsaData.wVersion) != 2 || HIBYTE(wsaData.wVersion) != 2) { WSACleanup(); return 1; } SOCKET sockSrv = socket(AF_INET, SOCK_STREAM, 0); int optval = 1; setsockopt(sockSrv, SOL_SOCKET, SO_REUSEADDR, (const char)&optval, sizeof(optval)); SOCKADDR_IN addrSrv; addrSrv.sin_addr.S_un.S_addr = htonl(INADDR_ANY); addrSrv.sin_family = AF_INET; addrSrv.sin_port = htons(6000); bind(sockSrv, (SOCKADDR)&addrSrv, sizeof(SOCKADDR)); listen(sockSrv, 5); SOCKADDR_IN addrClient; int len = sizeof(SOCKADDR); SOCKET sockConn = INVALID_SOCKET; fd_set fdReads; while (1) { // 使用 select() 函数实现非阻塞接收客户端连接 FD_ZERO(&fdReads); FD_SET(sockSrv, &fdReads); int ret = select(sockSrv + 1, &fdReads, NULL, NULL, NULL); if (ret < 0) { break; } if (FD_ISSET(sockSrv, &fdReads)) { sockConn = accept(sockSrv, (SOCKADDR*)&addrClient, &len); char sendBuf[50] = { 0 }; sprintf(sendBuf, "Welcome %s to here!\n", inet_ntoa(addrClient.sin_addr)); send(sockConn, sendBuf, strlen(sendBuf) + 1, MSG_NOSIGNAL); } // 使用 select() 函数实现非阻塞接收客户端消息 FD_ZERO(&fdReads); if (sockConn != INVALID_SOCKET) { FD_SET(sockConn, &fdReads); } ret = select(sockConn + 1, &fdReads, NULL, NULL, NULL); if (ret < 0) { break; } if (FD_ISSET(sockConn, &fdReads)) { char recvBuf[50] = { 0 }; recv(sockConn, recvBuf, 50, 0); printf("Received from client: %s\n", recvBuf); // 将客户端发送的消息广播给所有连接的客户端 for (SOCKET i = 0; i < FD_SETSIZE; i++) { if (FD_ISSET(i, &fdReads)) { send(i, recvBuf, strlen(recvBuf) + 1, MSG_NOSIGNAL); } } } } closesocket(sockSrv); WSACleanup(); return 0;}

这是一个使用Winsock2库编写的TCP服务器代码，其主要功能是监听来自客户端的TCP连接并接收和转发客户端发送的消息。具体来说，代码实现了以下步骤： 1. 初始化Winsock2库，并创建一个TCP socket对象。 2. 将socket...

你刚刚给我修改的服务器端和客户端的代码后为什么服务器端不显示任何消息服务器端代码 #define _WINSOCK_DEPRECATED_NO_WARNINGS#include <stdio.h>#include <Winsock2.h>#ifndef MSG_NOSIGNAL#define MSG_NOSIGNAL 0#endif#pragma comment(lib,"ws2_32.lib")int main() { WORD wVersionRequested; WSADATA wsaData; int err; wVersionRequested = MAKEWORD(2, 2); err = WSAStartup(wVersionRequested, &wsaData); if (err != 0) { return 1; } if (LOBYTE(wsaData.wVersion) != 2 || HIBYTE(wsaData.wVersion) != 2) { WSACleanup(); return 1; } // 创建套接字并绑定到本地地址和端口 SOCKET sockSrv = socket(AF_INET, SOCK_STREAM, 0); int optval = 1; setsockopt(sockSrv, SOL_SOCKET, SO_REUSEADDR, (const char)&optval, sizeof(optval)); SOCKADDR_IN addrSrv; addrSrv.sin_addr.S_un.S_addr = htonl(INADDR_ANY); addrSrv.sin_family = AF_INET; addrSrv.sin_port = htons(6000); bind(sockSrv, (SOCKADDR)&addrSrv, sizeof(SOCKADDR)); // 监听连接请求并接受客户端连接 listen(sockSrv, 5); SOCKADDR_IN addrClient; int len = sizeof(SOCKADDR); SOCKET sockConn; fd_set fdReads; while (1) { // 使用 select() 函数实现非阻塞接收客户端连接 FD_ZERO(&fdReads); FD_SET(sockSrv, &fdReads); int ret = select(sockSrv + 1, &fdReads, NULL, NULL, NULL); if (ret < 0) { break; } if (FD_ISSET(sockSrv, &fdReads)) { sockConn = accept(sockSrv, (SOCKADDR*)&addrClient, &len); char sendBuf[50]; printf(sendBuf, "Welcome %s to here!\n", inet_ntoa(addrClient.sin_addr)); send(sockConn, sendBuf, strlen(sendBuf) + 1, MSG_NOSIGNAL); } // 使用 select() 函数实现非阻塞接收客户端消息 FD_ZERO(&fdReads); FD_SET(sockConn, &fdReads); ret = select(sockConn + 1, &fdReads, NULL, NULL, NULL); if (ret < 0) { break; } if (FD_ISSET(sockConn, &fdReads)) { char recvBuf[50]; recv(sockConn, recvBuf, 50, 0); printf("Received from client: %s\n", recvBuf); // 将客户端发送的消息广播给所有连接的客户端 for (SOCKET i = 0; i < FD_SETSIZE; i++) { if (FD_ISSET(i, &fdReads)) { send(i, recvBuf, strlen(recvBuf) + 1, MSG_NOSIGNAL); } } } } closesocket(sockSrv); WSACleanup(); return 0;}

在服务器端代码中，当有新客户端连接时，你使用了一个未初始化的字符数组sendBuf来存储欢迎消息，这会导致 printf() 函数输出随机值。你需要先初始化 sendBuf，然后使用 sprintf() 函数将欢迎消息写入缓冲区...

#define _WINSOCK_DEPRECATED_NO_WARNINGS #define _CRT_SECURE_NO_WARNINGS #include <stdio.h> #include <stdlib.h> #include <string.h> #include <WinSock2.h> #ifndef MSG_NOSIGNAL #define MSG_NOSIGNAL 0 #endif #pragma comment(lib, "ws2_32.lib") #define MAX_CLIENTS 10 #define MAX_BUFFER_SIZE 50 SOCKET clientSockets[MAX_CLIENTS]; // 客户端套接字数组 int numClients = 0; // 客户端数量 DWORD WINAPI ClientThread(LPVOID lpParam) { SOCKET clientSocket = (SOCKET)lpParam; char recvBuf[MAX_BUFFER_SIZE]; while (1) { int ret = recv(clientSocket, recvBuf, MAX_BUFFER_SIZE, 0); if (ret <= 0) { break; } // 将消息广播给所有客户端 for (int i = 0; i < numClients; i++) { send(clientSockets[i], recvBuf, strlen(recvBuf) + 1, MSG_NOSIGNAL); } } // 客户端断开连接，从套接字数组中移除 for (int i = 0; i < numClients; i++) { if (clientSockets[i] == clientSocket) { for (int j = i; j < numClients - 1; j++) { clientSockets[j] = clientSockets[j + 1]; } break; } } numClients--; closesocket(clientSocket); return 0; } int main() { WORD wVersionRequested; WSADATA wsaData; int err; wVersionRequested = MAKEWORD(1, 1); err = WSAStartup(wVersionRequested, &wsaData); if (err != 0) { return -1; } if (LOBYTE(wsaData.wVersion) != 1 || HIBYTE(wsaData.wVersion) != 1) { WSACleanup(); return -1; } SOCKET sockSrv = socket(AF_INET, SOCK_STREAM, 0); SOCKADDR_IN addrSrv; addrSrv.sin_addr.S_un.S_addr = htonl(INADDR_ANY); addrSrv.sin_family = AF_INET; addrSrv.sin_port = htons(6000); bind(sockSrv, (SOCKADDR)&addrSrv, sizeof(SOCKADDR)); listen(sockSrv, 5); printf("服务器已启动，等待客户端连接...\n"); while (1) { SOCKADDR_IN addrClient; int len = sizeof(SOCKADDR); SOCKET sockConn = accept(sockSrv, (SOCKADDR)&addrClient, &len); printf("客户端 %s:%d 已连接\n", inet_ntoa(addrClient.sin_addr), ntohs(addrClient.sin_port)); // 将新的客户端套接字添加到数组中 clientSockets[numClients++] = sockConn; // 创建线程处理客户端消息 HANDLE hThread = CreateThread(NULL, 0, ClientThread, &sockConn, 0, NULL); CloseHandle(hThread); } closesocket(sockSrv); WSACleanup(); return 0; }

程序中使用了socket、bind、listen、accept等函数来创建服务器套接字、绑定端口、监听连接请求、接受连接等操作。当有客户端连接时，会将新的客户端套接字添加到客户端套接字数组中，并创建一个新的线程来处理客户端...

客户端代码#define _WINSOCK_DEPRECATED_NO_WARNINGS #define _CRT_SECURE_NO_WARNINGS #include <stdio.h> #include <stdlib.h> #include <string.h> #include <WinSock2.h> #ifndef MSG_NOSIGNAL #define MSG_NOSIGNAL 0 #endif #pragma comment(lib,"ws2_32.lib") DWORD WINAPI ReceiveThread(LPVOID lpParam) { SOCKET sockClient = (SOCKET)lpParam; char recvBuf[50]; while (1) { // 接收服务器的消息并打印出来 int ret = recv(sockClient, recvBuf, 50, 0); if (ret <= 0) { break; } printf("Received from server: %s\n", recvBuf); } return 0; } int main() { WORD wVersionRequested; WSADATA wsaData; int err; wVersionRequested = MAKEWORD(1, 1); err = WSAStartup(wVersionRequested, &wsaData); if (err != 0) { return -1; } if (LOBYTE(wsaData.wVersion) != 1 || HIBYTE(wsaData.wVersion) != 1) { WSACleanup(); return -1; } // 创建套接字并连接到服务器 SOCKET sockClient = socket(AF_INET, SOCK_STREAM, 0); SOCKADDR_IN addrSrv; addrSrv.sin_addr.S_un.S_addr = inet_addr("127.0.0.1"); addrSrv.sin_family = AF_INET; addrSrv.sin_port = htons(6000); connect(sockClient, (SOCKADDR*)&addrSrv, sizeof(SOCKADDR)); // 创建新线程来接收服务器的消息 HANDLE hThread = CreateThread(NULL, 0, ReceiveThread, &sockClient, 0, NULL); char sendBuf[50]; while (1) { // 读取用户输入的消息并发送给服务器 printf("Input message to send: "); fgets(sendBuf, 50, stdin); send(sockClient, sendBuf, strlen(sendBuf) + 1, 0); } // 关闭线程句柄 CloseHandle(hThread); closesocket(sockClient); WSACleanup(); return 0; }

这段代码是一个简单的客户端代码，主要功能是连接服务器，并发送和接收消息。它也使用了 WinSock2 库来进行网络编程。在主函数中，首先调用了 WSACleanup() 函数来释放 WinSock2 库占用的资源。然后创建了一个套接字...

#include <Winsock2.h> #include <includes.h> #pragma comment(lib, "ws2_32.lib") ////////////////////////////////////////////////////////// OS_FLAG_GRP Sem_F;//定义信号量集 INT8U err; //定义一个错误信息 int gaodu=100; void msgPtr[5]; OS_EVENT Semp; //消息队列 OS_EVENT Sempyx; //邮箱 OS_MEM intBuffer;//定义内存控制块指针 INT8U intPart[50][64];//划分分区及内存块 INT8U intBlkPtr;//定义指针 void WinSocketServer( ) { WORD wVersionRequested; WSADATA wsaData; //int err1; int sockSrv; SOCKADDR_IN addrSrv; SOCKADDR_IN addrClient;// 连接上的客户端ip地址 int len; wVersionRequested = MAKEWORD( 1, 1 ); err = WSAStartup( wVersionRequested, &wsaData ); if ( err != 0 ) { return; } if ( LOBYTE( wsaData.wVersion ) != 1 || HIBYTE( wsaData.wVersion ) != 1 ) { WSACleanup( ); return; } sockSrv=socket(AF_INET,SOCK_STREAM,0); addrSrv.sin_addr.S_un.S_addr=htonl(INADDR_ANY); addrSrv.sin_family=AF_INET; addrSrv.sin_port=htons(6000); bind(sockSrv,(SOCKADDR)&addrSrv,sizeof(SOCKADDR));// 绑定端口 listen(sockSrv,5); len=sizeof(SOCKADDR); while(1) { //unsigned char mm[2]; SOCKET sockConn=accept(sockSrv,(SOCKADDR)&addrClient,&len);// 接受客户端连接,获取客户端的ip地址 // sprintf(sendBuf,"Welcome %s to here!",inet_ntoa(addrClient.sin_addr));// 组合消息发送出去 intBlkPtr=OSMemGet(intBuffer,&err);//请求内存，获得内存分区指针 recv(sockConn,intBlkPtr,64,0);// 接受客户端消息 OSQPost(Semp, intBlkPtr); //有的数据可能不处理，就对掉了。 closesocket(sockConn);//断开连接 } } #define TASK_STK_SIZE 128 OS_STK AppStk_1[TASK_STK_SIZE]; OS_STK AppStk_2[TASK_STK_SIZE]; OS_STK AppStk_3[TASK_STK_SIZE]; OS_STK AppStk_4[TASK_STK_SIZE]; OS_STK AppStk_5[TASK_STK_SIZE]; OS_STK AppStk_6[TASK_STK_SIZE]; OS_STK AppStk_7[TASK_STK_SIZE]; OS_STK AppStk_8[TASK_STK_SIZE]; void App_Socket(void *p_arg) { while(1) { WinSocketServer( ); //建立socket接收数据 } //OSTimeDlyHMSM(0, 0, 1, 0); //这行是否可以删除 } // 温度，高度，自动驾驶 void App_gaodu_caiji( 详细解释代码

这段代码是一个基于 Windows Socket 的服务器程序，它建立了一个 TCP/IP 监听端口，等待客户端连接。当有客户端连接时，程序接收客户端发送过来的消息并放入一个消息队列中，然后关闭连接。同时，程序还定义了一个...

相关推荐

udp socket客户端和udp服务端程序示例分享

C++ 中 socket编程实例详解

你记得到我给你的服务器端代码吗

可是这个代码我根本运行不了？

vba socket

最新推荐

winsock 基础教程

体育课评分系统 微信小程序+SSM毕业设计 源码+数据库+论文+启动教程.zip

【东证期货-2024研报】短期关注天气能否触发惜售.pdf

客运自助售票小程序 微信小程序+SSM毕业设计 源码+数据库+论文+启动教程.zip

JHU荣誉单变量微积分课程教案介绍

管理建模和仿真的文件

【实战篇：自定义损失函数】：构建独特损失函数解决特定问题，优化模型性能

如何在ZYNQMP平台上配置TUSB1210 USB接口芯片以实现Host模式，并确保与Linux内核的兼容性？

Naruto爱好者必备CLI测试应用

"互动学习：行动中的多样性与论文攻读经历"

体育课评分系统微信小程序+SSM毕业设计源码+数据库+论文+启动教程.zip

客运自助售票小程序微信小程序+SSM毕业设计源码+数据库+论文+启动教程.zip