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5 g" m& o" B. W N8 x0 B6 I8 f我用c 写了一个socket通信的小程序,写好了服务端和客户端,可遇到个问题,就是每次启动客户端只能发送第一条消息,之后服务端就不能再收到消息了。9 a& ^/ r& y9 o8 a2 ?% ?
Talk is cheak , show me the code.2 p8 \# W) U- s
服务端代码:' s d% s$ r* M+ b/ R
- #include<stdlib.h>
4 p$ v( R! v: y3 h% [* F! j! l L - #include<WinSock2.h>& u4 W8 x! |; o" @# E* Y2 b, ]
- #pragma comment(lib,"ws2_32.lib"), C9 O. ? H* G+ ^6 Q, e
- int main(){
" b4 Y6 h0 p) z- {% B+ d - WSADATA wsd;" S8 @4 y) Q$ ~- O+ G& r9 ~2 c
- SOCKET sockServer;
1 X @6 R1 {# R- }. w8 x3 h! S - 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
2 t6 x2 t5 \7 H# z - SOCKET sockClient;
- y1 j; H7 Z1 U3 i - SOCKADDR_IN clientaddr;; |5 k. `$ k% n2 U5 m- {
- WSAStartup(MAKEWORD(2,2),&wsd);//初始化网络接口
) @9 c0 Z/ @3 m1 b' k# T. ~& M - sockServer = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);//创建服务器socket
- S! h, G, K9 @6 y4 f# E - - \2 v0 C- R# o9 h# z5 C
m7 H: z( n2 g0 D- if (sockServer != -1 && sockServer != INVALID_SOCKET){; e: S0 _& J) N; |
- printf("Socket has been created :%d", sockServer);5 \6 T* b+ `3 q6 T+ N6 V; O3 k; L
- }/ V9 I7 m# @, j1 Q
- else{+ ?( y1 }2 k W5 C3 X* O8 g3 A
- printf("Socket create failed.");9 O& `- @/ m2 g5 U) f
- exit(0);
. E) J$ U! l( X9 h0 i. d - }
9 x" s( v$ e* r# Q- L$ Z; {! ] - serveraddr.sin_addr.S_un.S_addr = htonl(INADDR_ANY);
" s0 a; h* a7 U; j - serveraddr.sin_family = AF_INET;# T% v# ]# c4 b4 [. ~. r6 i
- serveraddr.sin_port = htons(6000);//绑定端口60000 X+ Q3 y, r( H, e2 R0 k
- int bindInfo = bind(sockServer, (SOCKADDR*)&serveraddr, sizeof(SOCKADDR));
# E" W. T* q# ~2 K - char recvBuf[100];
! O' \! S, ~) U5 @ - int len = sizeof(SOCKADDR);+ d! H) S7 `- E4 I
- listen(sockServer, 5);//5为等待连接数
9 p' }. U" Q" x - while (1){4 p" ?& z' ?3 y$ }" R3 F* g R4 I2 i
- sockClient = accept(sockServer, (SOCKADDR*)&clientaddr, &len);
! _ O X) K# n9 F8 |4 |, y% J - //接收客户端数据
' |: x9 v# l& U k( b6 ^ - recv(sockClient, recvBuf, strlen(recvBuf)+1, MSG_PEEK);( ^$ A6 K" H$ B6 a
- printf("to me:%s\n",recvBuf);
5 T2 e' ?0 y+ C7 R* T) E2 c$ l, N8 a - memset(recvBuf, 0, 100);; q0 X% q3 t* p' h
- }
- b8 `% g% B3 v+ Q - closesocket(sockClient);
0 C% k9 Y2 A- I: h& O2 g$ | - system("pause");
) B0 V6 G2 M' l# b - return 0;
$ A6 d9 Q5 g& d1 q - }
复制代码 客户端代码:
+ p4 X9 V+ I1 J7 z8 k) K; ^- #include<winsock2.h>- }% f. o3 L; w- ~+ X5 ^
- #include<stdio.h>' Z1 r; V7 y5 C8 ?. U
- #pragma comment(lib, "ws2_32.lib")& V* e7 E' E5 f; i& p$ O& N& l) y
- void main()
# Y9 K& `3 J/ ]3 S3 U, { - {
$ g) \7 Y7 K8 j - WSADATA wsaData;
: A* ^3 c0 w! K4 o% o+ P - SOCKET sockClient;//客户端Socket# A8 C; j6 _6 e% u9 [; d, G
- SOCKADDR_IN addrServer;//服务端地址
$ [3 I i9 ]+ p" ~* O: j- F - WSAStartup(MAKEWORD(2, 2), &wsaData);/ F9 G" a4 w4 g
- char message[20] = "HelloSocket!";, \+ S8 A, l$ i* q
- //定义要连接的服务端地址. H) M2 h0 x5 y
- 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)
9 w7 _' v' t: P7 Q8 D4 } - addrServer.sin_family = AF_INET;) x* v& K" }) X5 E$ o& e
- addrServer.sin_port = htons(6000);//连接端口6000
( ~9 v8 h8 u, M( v- g/ v" V - //新建客户端socket1 w. H; R1 @5 Z# P7 X6 Q: J
- sockClient = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);5 H" f: a3 L3 n4 |3 v
- int s = 0;& a; c l: K* [. n; R: S6 `1 U
- s = connect(sockClient, (SOCKADDR*)&addrServer, sizeof(SOCKADDR));
! I. X; M" L# g, p+ V: H! O9 A7 l
6 Q, z* _% R. n5 F' H+ K. P- while (1){: j4 H, N6 y& U3 @4 E& C1 D
- //发送数据
l! ?& t' Q. o3 G/ ]6 c' C - int a = send(sockClient, message, strlen(message) + 1, 0);, t7 ]1 }9 U" F b. O! E6 y
- printf("to server:");( K: w( D' C7 ^6 m
- scanf("%s", message);; w9 h5 e/ j6 _1 \9 E0 `
- . t/ q. w* _9 ?, c' U5 s
- }
" m3 h# l( w' X6 [) p6 I1 f/ P2 S - //关闭socket
: p- A8 g g! b1 t- P - closesocket(sockClient);
3 M. W& B' P0 j- x" y N0 E( J - WSACleanup();
0 D( \' ]6 _% O, J9 D' V) Y* f - }
复制代码 求懂的高手来解答一下。5 x6 {0 k* z: H* b Q
谢谢了!
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