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(){; E( M+ d6 a2 j. G4 l: ]( O# G1 X
WSADATA wsd;+ n7 N6 y% D/ B1 `
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3 u& d3 H# _& x7 Q1 [
SOCKET sockClient;5 y" x% G1 q/ m( V* \
SOCKADDR_IN clientaddr;- I% ^6 |( w: q& j# ^7 W
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
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if (sockServer != -1 && sockServer != INVALID_SOCKET){
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printf("Socket has been created :%d", sockServer);0 K4 ? z6 ]0 R! d, Z8 ]7 J* x' 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);
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serveraddr.sin_family = AF_INET;
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serveraddr.sin_port = htons(6000);//绑定端口60008 ]4 ]" Z- @+ u
int bindInfo = bind(sockServer, (SOCKADDR*)&serveraddr, sizeof(SOCKADDR));4 j# i6 {# G% j! Z9 `
char recvBuf[100];
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int len = sizeof(SOCKADDR);& X1 B, b1 U+ t, g
listen(sockServer, 5);//5为等待连接数
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while (1){2 R" u" ^. [8 m' u) L* T
sockClient = accept(sockServer, (SOCKADDR*)&clientaddr, &len);* i' Q0 N% I8 M! `1 I' H: n
//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);
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}
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closesocket(sockClient); P& W- W' L5 t) ?0 K
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>: r4 [! c2 {; K; u* B
#pragma comment(lib, "ws2_32.lib")" U$ g# O4 v" I1 I& X: N
void main()
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WSADATA wsaData;
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SOCKET sockClient;//客户端Socket4 S _: \& u1 L) t
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!";
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//定义要连接的服务端地址) p; |0 o- ~- x0 r6 U4 l5 v0 r
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)/ I; j5 b& W7 t7 a( g1 z9 |* s
addrServer.sin_family = AF_INET;
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addrServer.sin_port = htons(6000);//连接端口60006 O& V, z+ _0 e6 S9 R+ }
//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){' F2 a% i1 R2 w! x
//发送数据7 O# L; K( N- q
int a = send(sockClient, message, strlen(message) + 1, 0);
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printf("to server:");
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scanf("%s", message);: w. S7 Y- W& a/ B$ w. o- c8 F
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}
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//关闭socket
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closesocket(sockClient);) S" Y+ S7 I7 E3 B: K( {( t- _
WSACleanup();
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}

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