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>9 _! ~' p2 V0 @8 o5 f' q/ S8 X
#include<WinSock2.h>* T7 ^* G* o& Z9 a1 m' p
#pragma comment(lib,"ws2_32.lib")
% \' |) [6 R+ J" D
int main(){# V3 S" S+ p$ a4 [# ~! G
WSADATA wsd; g0 d) H" k: i/ w, D9 Y, R6 T
SOCKET sockServer;. N7 t+ T+ s8 s8 F5 A3 i$ ~6 f
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9 N5 ~1 p7 e+ P6 i
SOCKET sockClient;8 F' g$ i% C3 k0 l5 z
SOCKADDR_IN clientaddr;
: ~) r- f" l" {9 H9 l
WSAStartup(MAKEWORD(2,2),&wsd);//初始化网络接口
2 }/ l0 j g! o* Y. V# [& ?
sockServer = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);//创建服务器socket
1 a" t( M* h( a0 B' U4 h' |
) x. T% l) ~9 i! I C z
# T* c: Y6 G& r: H0 Q) F# D
if (sockServer != -1 && sockServer != INVALID_SOCKET){
4 ]3 y$ g! m, R/ Z# a# q
printf("Socket has been created :%d", sockServer);
: ?3 I1 \" @; [. @ m2 @
}
, E' X( U K% R7 Z/ T3 V3 ?; \
else{0 U6 {" _: ~' l |+ `: o. t+ ]
printf("Socket create failed.");
4 t: ?5 v6 k9 i& u1 S' a$ i$ ?$ e% ~
exit(0);
# G3 D8 _+ S8 M3 h7 h) y& ?3 X
}
# `4 ?5 b! q* \- ~& ^' k5 Y
serveraddr.sin_addr.S_un.S_addr = htonl(INADDR_ANY);$ z7 Q6 t) O) [5 E
serveraddr.sin_family = AF_INET; L0 |, j0 i( ?* v+ M" e3 X
serveraddr.sin_port = htons(6000);//绑定端口6000( ]0 J% {! ~3 D, J
int bindInfo = bind(sockServer, (SOCKADDR*)&serveraddr, sizeof(SOCKADDR));
: G8 A/ s: ]: e# ?0 [) J9 F
char recvBuf[100];
8 n) I' _9 T$ q) n1 S
int len = sizeof(SOCKADDR);6 H( u3 F$ w% S: t
listen(sockServer, 5);//5为等待连接数
$ p( T) R+ B/ x! O
while (1){' p, p+ F& }8 {+ _
sockClient = accept(sockServer, (SOCKADDR*)&clientaddr, &len);0 `7 N3 W+ d; D1 V
//接收客户端数据5 q- D$ L4 }3 W" B y
recv(sockClient, recvBuf, strlen(recvBuf)+1, MSG_PEEK);
4 I( T, B3 g4 g0 T$ M' [
printf("to me:%s\n",recvBuf);
5 g( G- f3 x0 w h4 P( h( T" o
memset(recvBuf, 0, 100);6 B+ b& |/ Y* c. L4 ?* ?
}
: w9 T" V" x' l3 ]1 D! p% ?+ p
closesocket(sockClient);' a# @# J. X9 V* e/ `
system("pause");
' W; v6 f% A8 V0 N$ {1 E
return 0;# W9 D u9 Q) |/ T7 F
}

复制代码

#include<winsock2.h>
1 ~& Y, q. u1 K' }7 ]1 t
#include<stdio.h>. T" Q2 s) r' @5 a: F* j9 s0 ~
#pragma comment(lib, "ws2_32.lib")7 A/ f9 X8 S ^# P' u A
void main()
$ b& a) u8 s% r+ ^& {
{2 b1 R# O: H1 y9 H& G, [* f/ \+ S
WSADATA wsaData;3 e% z M+ R+ i3 X
SOCKET sockClient;//客户端Socket
t4 }7 t1 g: F/ \
SOCKADDR_IN addrServer;//服务端地址0 |+ r( _( L' F0 D* T6 [
WSAStartup(MAKEWORD(2, 2), &wsaData);$ |4 m2 ?# u" r, p: Z2 ]
char message[20] = "HelloSocket!";
9 J3 }# B" ?# i: i8 @- d9 P
//定义要连接的服务端地址8 e0 n, h* P- `/ D
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)4 a9 X, W1 b. B$ Q. w; s
addrServer.sin_family = AF_INET;, G( ]# R; R" m- [. o# L8 p
addrServer.sin_port = htons(6000);//连接端口60004 g) J6 [0 e5 \6 ]3 r6 ?
//新建客户端socket0 u. m8 i( w: _8 W- G" |
sockClient = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
& {+ X% \& r' w( j
int s = 0;
' W) M9 O. U' I7 g
s = connect(sockClient, (SOCKADDR*)&addrServer, sizeof(SOCKADDR));/ P2 T0 v, v: s" s0 ?9 I Q: K' _: T- \
9 L+ p9 M, Q- W8 B: X( L' _
while (1){ C- p+ P q% T$ C7 t
//发送数据; Y! F+ o+ O9 n' s; [
int a = send(sockClient, message, strlen(message) + 1, 0);- y2 K7 J% v- c
printf("to server:");, R& `4 n7 a9 E1 {4 h9 F- U* c; ?% \* C
scanf("%s", message);
* u( E. Q; B+ F3 T. n2 h5 x' ]* J
; r0 q* G! \9 S( O5 B5 V
}( P) u. ?! Y: L* B/ U- s1 a
//关闭socket
# _6 r% T" Z( T& D. v
closesocket(sockClient);. ~$ N8 n% z2 A* G; f
WSACleanup();
, ^& J, f$ n5 _3 P( Q
}

复制代码