C语言 socket 编写简单服务端客户端通信问题 - cncml手绘网

#include<stdlib.h>
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#include<WinSock2.h>1 x+ V9 b( A: x9 n! r, F4 E! _
#pragma comment(lib,"ws2_32.lib")
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int main(){5 e! C+ L3 i- c' r. h: E; O
WSADATA wsd;) Q( G: o# f# x4 O
SOCKET sockServer;
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SOCKADDR_IN serveraddr;// 服务端套接字该结构中包含了要结合的地址和端口号
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SOCKET sockClient;0 r- {4 @1 F% l2 T1 C
SOCKADDR_IN clientaddr;
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WSAStartup(MAKEWORD(2,2),&wsd);//初始化网络接口
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sockServer = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);//创建服务器socket" l% C; i9 W; B2 s( r T
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if (sockServer != -1 && sockServer != INVALID_SOCKET){
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printf("Socket has been created :%d", sockServer);4 u( `6 i; |0 Z+ l; i) M! Z/ o2 O' t
}
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else{8 \, v* ^6 J# f; b1 ^+ @1 V% E; Y
printf("Socket create failed.");* W* n/ Z5 a: o( X% E
exit(0);
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}
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serveraddr.sin_addr.S_un.S_addr = htonl(INADDR_ANY);7 C y1 c/ ~1 U. {; `" r6 W
serveraddr.sin_family = AF_INET;
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serveraddr.sin_port = htons(6000);//绑定端口6000
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int bindInfo = bind(sockServer, (SOCKADDR*)&serveraddr, sizeof(SOCKADDR));4 P# j6 x- k1 [6 S' }. u
char recvBuf[100];
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int len = sizeof(SOCKADDR); ?( S ^7 L7 K4 O6 [+ F; e
listen(sockServer, 5);//5为等待连接数
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while (1){9 c' E9 T4 G# Z6 s6 S
sockClient = accept(sockServer, (SOCKADDR*)&clientaddr, &len);6 [$ B& ^$ ^2 G! ~
//接收客户端数据
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recv(sockClient, recvBuf, strlen(recvBuf)+1, MSG_PEEK);& v+ J' V/ @; ?7 t
printf("to me:%s\n",recvBuf);- z- ~9 ?8 Y$ a" c: @
memset(recvBuf, 0, 100);
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closesocket(sockClient);
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system("pause");; O f8 ^4 G0 c# P' c: |2 Q$ Q
return 0;
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}

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#include<winsock2.h>
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#include<stdio.h>
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#pragma comment(lib, "ws2_32.lib")
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void main()5 R5 N" V9 w8 |' Z+ A S
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WSADATA wsaData;
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SOCKET sockClient;//客户端Socket
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SOCKADDR_IN addrServer;//服务端地址
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WSAStartup(MAKEWORD(2, 2), &wsaData);
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char message[20] = "HelloSocket!";' M" z# {! p$ ?. D- ?# }, v
//定义要连接的服务端地址. S% m6 }+ k* \0 O( f" q2 t z+ h$ n @! e
addrServer.sin_addr.S_un.S_addr = inet_addr("127.0.0.1");//目标IP(127.0.0.1是回送地址)
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addrServer.sin_family = AF_INET; c* `) B: s; i) S; d
addrServer.sin_port = htons(6000);//连接端口6000& y) J8 F6 y3 `, S
//新建客户端socket
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sockClient = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
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int s = 0;
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s = connect(sockClient, (SOCKADDR*)&addrServer, sizeof(SOCKADDR));
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while (1){
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//发送数据
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int a = send(sockClient, message, strlen(message) + 1, 0);
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printf("to server:");0 k; ?" N( l) }& c0 _, T+ g3 }- E
scanf("%s", message);9 P3 n( x9 R& V2 O }+ r2 C
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}
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//关闭socket1 d$ X# ]5 c2 G( n0 g4 W
closesocket(sockClient);
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WSACleanup();
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}

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