标签：ada sas syntax clu port bsp names highlight net
实现网络广播，开启了收发两个线程，具有收、发两个功能
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#define _WINSOCK_DEPRECATED_NO_WARNINGS#include <iostream>#include <process.h>#include <WinSock2.h>//windows API#pragma comment(lib,"ws2_32.lib")#define IP "127.0.0.1"#define SENDPORT 0#define RECVPORT 3781#define BROADCAST "255.255.255.255"using namespace std;struct ARGLIST{ SOCKET sock; sockaddr_in addr;};void send_process(void *p){ ARGLIST send_process; send_process = *((ARGLIST *)p); char sendbuffer[4096]; while (true) { gets_s(sendbuffer); if (0 == strcmp(sendbuffer, "#")) { _endthread(); } if (SOCKET_ERROR == sendto(send_process.sock, sendbuffer, strlen(sendbuffer), 0, (sockaddr *)&send_process.addr, sizeof(send_process.addr))) { cout << "发送失败" << GetLastError() << endl; _endthread(); } else { cout << "发送成功" << endl; } }}void recv_process(void *p){ ARGLIST recv_process; recv_process = *((ARGLIST *)p); char recvbuffer[4096]; int nLen = sizeof(recv_process.addr); while (true) { int n = recvfrom(recv_process.sock, recvbuffer, sizeof(recvbuffer), 0, (sockaddr *)&recv_process.addr, &nLen); if (SOCKET_ERROR == n) { cout << "接收失败" << GetLastError() << endl; _endthread(); } recvbuffer[n] = 0; cout << "发送者IP：" << inet_ntoa(recv_process.addr.sin_addr) << " 端口：" << htons(recv_process.addr.sin_port) << endl; cout << "接收：" << recvbuffer << endl; }}int GetSendList(ARGLIST &sendlist){ WSADATA wd; WSAStartup(0x0202, &wd); SOCKET sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP); if (INVALID_SOCKET == sock) { cout << "创建套接字错误" << GetLastError() << endl; } sockaddr_in sin = { AF_INET }; //sin.sin_addr.s_addr = INADDR_BROADCAST; sin.sin_addr.S_un.S_addr = inet_addr(IP); sin.sin_port = htons(SENDPORT); if (SOCKET_ERROR == bind(sock, (sockaddr *)&sin, sizeof(sin))) { cout << "Send绑定套接字错误" << GetLastError() << endl; return 0; } bool bOpt = true; //设置该套接字为广播类型 if (SOCKET_ERROR == setsockopt(sock, SOL_SOCKET, SO_BROADCAST, (char*)&bOpt, sizeof(bOpt))) { cout << "Send设置套接字错误" << GetLastError() << endl; } sendlist.sock = sock; sockaddr_in sin_from = { AF_INET }; //sin.sin_addr.s_addr = INADDR_BROADCAST; sin_from.sin_addr.S_un.S_addr = inet_addr(BROADCAST); sin_from.sin_port = htons(RECVPORT); sendlist.addr = sin_from; return 1;}int GetRecvList(ARGLIST &recvlist){ WSADATA wd; WSAStartup(0x0202, &wd); SOCKET sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP); if (sock == INVALID_SOCKET) { cout << "创建套接字错误" << GetLastError() << endl; } sockaddr_in sin = { AF_INET }; //sin.sin_addr.s_addr = INADDR_BROADCAST; sin.sin_addr.S_un.S_addr = inet_addr(IP); sin.sin_port = htons(RECVPORT); if (SOCKET_ERROR == bind(sock, (sockaddr *)&sin, sizeof(sin))) { cout << "Recv绑定套接字错误" << GetLastError() << endl; return 0; } bool bOpt = true; //设置该套接字为广播类型 if (SOCKET_ERROR == setsockopt(sock, SOL_SOCKET, SO_BROADCAST, (char*)&bOpt, sizeof(bOpt))) { cout << "Recv设置套接字错误" << GetLastError() << endl; } recvlist.sock = sock; sockaddr_in sin_from = { AF_INET }; sin_from.sin_addr.s_addr = INADDR_BROADCAST; //sa.sin_addr.S_un.S_addr = inet_addr(IP); sin_from.sin_port = htons(SENDPORT); recvlist.addr = sin; return 1;}int main(){ ARGLIST sendlist,recvlist; if (0 == GetSendList(sendlist)) { return 0; } if (0 == GetRecvList(recvlist)) { return 0; } char *hello = "Hello"; if (SOCKET_ERROR == sendto(sendlist.sock, hello, strlen(hello), 0, (sockaddr *)&sendlist.addr, sizeof(sendlist.addr))) { cout << "发送失败" << GetLastError() << endl; return 0; } _beginthread(send_process, 0, &sendlist); _beginthread(recv_process, 0, &recvlist); while(true) { } return 0;} |
标签：ada sas syntax clu port bsp names highlight net
原文地址：http://www.cnblogs.com/amu-long/p/7467340.html
