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>
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#pragma comment(lib,"ws2_32.lib")
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int main(){( z2 d. r& `0 ~9 f$ x/ G" J
WSADATA wsd;
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SOCKET sockServer;9 s% } X; K1 ?& g! u3 j" ]
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5 p2 F/ n9 ] I! G( [; C% E1 @
SOCKET sockClient;
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SOCKADDR_IN clientaddr;
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WSAStartup(MAKEWORD(2,2),&wsd);//初始化网络接口2 I6 d- n' c- C$ c e* C
sockServer = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);//创建服务器socket
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if (sockServer != -1 && sockServer != INVALID_SOCKET){
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printf("Socket has been created :%d", sockServer);# K0 u% j& K6 r, b' ~6 P
}
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else{
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printf("Socket create failed.");
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exit(0);
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serveraddr.sin_addr.S_un.S_addr = htonl(INADDR_ANY);" V; p, ?$ F* j
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));6 {4 m9 b" Y5 Z! _
char recvBuf[100];) k2 i. l" A( M" S6 y9 K2 F
int len = sizeof(SOCKADDR);+ p2 C7 H' Z' Z* ~
listen(sockServer, 5);//5为等待连接数
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while (1){
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sockClient = accept(sockServer, (SOCKADDR*)&clientaddr, &len);: [# Q \& S( }2 J. V- r# O
//接收客户端数据
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recv(sockClient, recvBuf, strlen(recvBuf)+1, MSG_PEEK);
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printf("to me:%s\n",recvBuf);
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memset(recvBuf, 0, 100);' v A3 l3 o/ G6 f" I) S
}
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closesocket(sockClient);+ m: s' P% R3 b9 s
system("pause");
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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")0 {% S5 m- V' s4 e
void main()
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WSADATA wsaData;& k5 m% E3 m1 L C w' k
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);* k2 n! E$ ]7 m# q6 T
char message[20] = "HelloSocket!";
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//定义要连接的服务端地址
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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;
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addrServer.sin_port = htons(6000);//连接端口6000, u4 v# b1 C% I) E4 [& S
//新建客户端socket" I6 d. |9 Z2 L0 }, v) S
sockClient = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
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int s = 0;: T1 t1 D5 V6 v
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:");& D1 f" J/ Y: O; {- z3 x: y7 ^
scanf("%s", message);; }) m8 k0 d5 p+ P) `. n9 i% ?
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}
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//关闭socket
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closesocket(sockClient);7 u. T9 R& P ]5 K9 p" ]9 }
WSACleanup();1 U1 H4 {2 d' I) _1 J0 z" R" d
}

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