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(){$ E0 l/ S* k2 d' Z7 D2 f y2 `
WSADATA wsd;! }2 N# {) T b: @+ O! z) B4 _
SOCKET sockServer;) G. J/ l e% R% I0 f6 W
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;
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SOCKADDR_IN clientaddr;" l$ ~6 a% r4 D; e* P
WSAStartup(MAKEWORD(2,2),&wsd);//初始化网络接口 `4 M7 c. V2 l
sockServer = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);//创建服务器socket' \6 B) {- [* q( N3 O# i& l
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if (sockServer != -1 && sockServer != INVALID_SOCKET){
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printf("Socket has been created :%d", sockServer);1 }- h/ a# C6 f5 g7 ]- i
}
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else{
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printf("Socket create failed.");$ s1 Y% z5 Y* A( ]; [3 G
exit(0);
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}
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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6000$ e) W4 \* ^, b/ ~2 g& Q
int bindInfo = bind(sockServer, (SOCKADDR*)&serveraddr, sizeof(SOCKADDR));9 O9 m1 d1 L6 N0 v6 O7 n
char recvBuf[100];3 F6 H7 T. T8 c
int len = sizeof(SOCKADDR);; a* ~7 F6 y* A+ M: ~/ u9 Z
listen(sockServer, 5);//5为等待连接数
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while (1){* d1 Y7 F, _# r8 o
sockClient = accept(sockServer, (SOCKADDR*)&clientaddr, &len);
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//接收客户端数据1 H n; \, }, P" _
recv(sockClient, recvBuf, strlen(recvBuf)+1, MSG_PEEK);
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printf("to me:%s\n",recvBuf);$ |4 t( |: z3 I# p/ N
memset(recvBuf, 0, 100);
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}
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closesocket(sockClient);/ h. p6 }. o/ X8 D/ W2 y
system("pause");) ?# F; [% H: R" M7 p# s
return 0;) r* E+ |1 Q' P2 q% o
}

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#include<winsock2.h>! e& b: D* c5 Q' e" \
#include<stdio.h>, {3 t; g$ L- u
#pragma comment(lib, "ws2_32.lib")& G8 ?0 b! x) N/ @% C
void main()8 o6 _2 P0 }( P2 @
{
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WSADATA wsaData;+ R* n5 o* h% h" j+ H8 ?
SOCKET sockClient;//客户端Socket
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SOCKADDR_IN addrServer;//服务端地址# s, {; s# |. ~* W
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
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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)& @ V, i/ v4 \) A8 a4 Y' j L# K* ]
addrServer.sin_family = AF_INET;2 q, Y5 S6 z8 }5 o8 y+ w% u* Z
addrServer.sin_port = htons(6000);//连接端口6000
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//新建客户端socket' C5 B R+ H8 J3 E8 A/ _- r
sockClient = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
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int s = 0;/ ?8 {9 C6 J, g' C8 i9 n( O
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:");9 A X# u( U% [' f/ B( k8 K [! P, i7 U
scanf("%s", message);8 k/ |* I R c* w6 X# c. x* w4 G
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}
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//关闭socket+ `( L- _& ^8 H+ ]
closesocket(sockClient);5 `4 e& T7 R7 m, [" L% H
WSACleanup();9 K7 _ }6 K0 h' H; ^0 x) x& Y* R
}

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