c语言简单socket通信_socket通信c语言实现
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server:
#include
#include
#pragma comment(lib,“ws2_32.lib”)
int main(int argc, char* argv[]){
//³õʼ»¯WSA
WORD sockVersion = MAKEWORD(2,2);WSADATA wsaData;if(WSAStartup(sockVersion, &wsaData)!=0){return 0;} //´´½¨Ì×½Ó×Ö SOCKET slisten = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);if(slisten == INVALID_SOCKET){printf(“socket error!”);return 0;} //°ó¶¨IPºÍ¶Ë¿Ú sockaddr_in sin;sin.sin_family = AF_INET;sin.sin_port = htons(8888);sin.sin_addr.S_un.S_addr = INADDR_ANY;if(bind(slisten,(LPSOCKADDR)&sin, sizeof(sin))== SOCKET_ERROR){printf(“bind error!”);} //¿ªÊ¼¼àÌý if(listen(slisten, 5)== SOCKET_ERROR){} //Ñ-»·½ÓÊÕÊý¾Ý SOCKET sClient;sockaddr_in remoteAddr;printf(“listen error!”);return 0;
char revData[255];while(true){printf(“µÈ´ýÁ¬½Ó...n”);sClient = accept(slisten,(SOCKADDR *)&remoteAddr, &nAddrlen);if(sClient == INVALID_SOCKET)
{
printf(“accept error!”);
continue;
}
printf(“½ÓÊܵ½Ò»¸öÁ¬½Ó£º%s
inet_ntoa(remoteAddr.sin_addr));
//½ÓÊÕÊý¾Ý
int ret = recv(sClient, revData, 255, 0);
if(ret > 0)
{
revData[ret] = 0x00;
printf(revData);
}
//·¢ËÍÊý¾Ý
char * sendData = ”ÄãºÃ£¬TCP¿Í»§¶Ë£¡n“;
send(sClient, sendData, strlen(sendData), 0);
closesocket(sClient);
}
closesocket(slisten);
WSACleanup();
return 0;
}
client:
#include
#include
#pragmacomment(lib,”ws2_32.lib“)
rn”,int main(int argc, char* argv[])
{
WORD sockVersion = MAKEWORD(2,2);
WSADATA data;
if(WSAStartup(sockVersion, &data)!= 0)
{
return 0;
}
SOCKET sclient = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);if(sclient == INVALID_SOCKET)
{
printf(“invalid socket!”);
return 0;
}
sockaddr_in serAddr;
serAddr.sin_family = AF_INET;
serAddr.sin_port = htons(8888);
serAddr.sin_addr.S_un.S_addr = inet_addr(“127.0.0.1”);
if(connect(sclient,(sockaddr *)&serAddr, sizeof(serAddr))SOCKET_ERROR)
{
printf(“connect error!”);
closesocket(sclient);
return 0;
}
char * sendData = “ÄãºÃ£¬TCP·þÎñ¶Ë£¬ÎÒÊÇ¿Í»§¶Ë!n”;
send(sclient, sendData, strlen(sendData), 0);
char recData[255];
int ret = recv(sclient, recData, 255, 0);
if(ret > 0)
{
recData[ret] = 0x00;
printf(recData);
}
closesocket(sclient);
WSACleanup();
return 0;
} ==
