Windows下C语言的Socket编程例子(TCP和UDP)
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一。 <TCP>
server端:
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client端:
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二. <UDP>
SERVER 端
1 #include "stdafx.h" 2 #include <stdio.h> 3 #include <winsock2.h> 4 5 #pragma comment(lib, "ws2_32.lib") 6 7 int main(int argc, char* argv[]) 8 { 9 WSADATA wsaData;10 WORD sockVersion = MAKEWORD(2,2);11 if(WSAStartup(sockVersion, &wsaData) != 0)12 {13 return 0;14 }15 16 SOCKET serSocket = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP); 17 if(serSocket == INVALID_SOCKET)18 {19 printf("socket error !");20 return 0;21 }22 23 sockaddr_in serAddr;24 serAddr.sin_family = AF_INET;25 serAddr.sin_port = htons(8888);26 serAddr.sin_addr.S_un.S_addr = INADDR_ANY;27 if(bind(serSocket, (sockaddr *)&serAddr, sizeof(serAddr)) == SOCKET_ERROR)28 {29 printf("bind error !");30 closesocket(serSocket);31 return 0;32 }33 34 sockaddr_in remoteAddr;35 int nAddrLen = sizeof(remoteAddr); 36 while (true)37 {38 char recvData[255]; 39 int ret = recvfrom(serSocket, recvData, 255, 0, (sockaddr *)&remoteAddr, &nAddrLen);40 if (ret > 0)41 {42 recvData[ret] = 0x00;43 printf("接受到一个连接:%s \r\n", inet_ntoa(remoteAddr.sin_addr));44 printf(recvData); 45 }46 47 char * sendData = "一个来自服务端的UDP数据包\n";48 sendto(serSocket, sendData, strlen(sendData), 0, (sockaddr *)&remoteAddr, nAddrLen); 49 50 }51 closesocket(serSocket); 52 WSACleanup();53 return 0;54 }
CLIENT 端
1 #include "stdafx.h" 2 #include <stdio.h> 3 #include <winsock2.h> 4 5 #pragma comment(lib, "ws2_32.lib") 6 7 int main(int argc, char* argv[]) 8 { 9 WORD socketVersion = MAKEWORD(2,2);10 WSADATA wsaData; 11 if(WSAStartup(socketVersion, &wsaData) != 0)12 {13 return 0;14 }15 SOCKET sclient = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);16 17 sockaddr_in sin;18 sin.sin_family = AF_INET;19 sin.sin_port = htons(8888);20 sin.sin_addr.S_un.S_addr = inet_addr("127.0.0.1");21 int len = sizeof(sin);22 23 char * sendData = "来自客户端的数据包.\n";24 sendto(sclient, sendData, strlen(sendData), 0, (sockaddr *)&sin, len);25 26 char recvData[255]; 27 int ret = recvfrom(sclient, recvData, 255, 0, (sockaddr *)&sin, &len);28 if(ret > 0)29 {30 recvData[ret] = 0x00;31 printf(recvData);32 }33 34 closesocket(sclient);35 WSACleanup();36 return 0;37 }
转自:http://blog.csdn.net/ssun125/article/details/8525823
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- Windows下C语言的Socket编程例子(TCP和UDP)
- Windows下C语言的Socket编程例子(TCP和UDP)
- Windows下C语言的Socket编程例子(TCP和UDP)
- Windows下C语言的Socket编程例子(TCP和UDP)
- 【转】Windows下C语言的Socket编程例子(TCP和UDP)
- Windows下C语言的Socket编程例子(TCP和UDP)
- Windows下C语言的Socket编程例子(TCP和UDP)
- Windows下C语言的Socket编程例子(TCP和UDP)
- Windows下C语言的Socket编程例子(TCP和UDP)
- Windows下C语言的Socket编程例子(TCP和UDP)
- Windows下C语言的Socket编程例子(TCP和UDP)
- Windows下C语言的Socket编程例子(TCP和UDP)
- Windows下C语言的Socket编程例子(TCP和UDP)
- Windows下C语言的Socket编程例子(TCP和UDP)
- Windows下C语言的Socket编程例子(TCP和UDP)
- Windows下C语言的Socket编程例子(TCP和UDP)
- Windows下C语言的Socket编程例子(TCP和UDP)
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