管理员
   
论坛积分
分
威望 点
贡献值 个
金币 枚
|
程序很简单,windows环境下的,客户端和服务器程序都在本机运行,在客户端输入发送给服务器的字符串,服务器收到字符串后会打印出来,同时与"abc"比较,与"abc"相同就会返给客户端,输入的是正确的,不同会告诉客户端输入时错误的。
% V( W- T! A( N! |客户端程序:client.cpp
$ Q% Q; x. w0 ^( k& \% ~/ O9 V, S" ^- #include <winsock2.h>
, Y; [6 {6 @5 {! c! F" \ - #include <stdio.h>
' _# C; }9 F* O1 p6 [ - #include <stdlib.h>7 G8 _1 B! z4 o4 s1 |
- " Y& q' C& W' h. m$ v) n3 F
- #define DEFAULT_PORT 5150* R) @2 u j/ K
- #define DEFAULT_BUFFER 2048
E- C: {! Z$ H6 ]: V. r
3 t7 A9 K! j. m$ ~- char szServer[128],
9 z" }. i$ e2 |" C8 {4 A - szMessage[1024];
4 d* E( X/ E1 z; V - int iPort = DEFAULT_PORT;8 D3 I4 K5 t8 y% \
, P! U; U6 z+ h$ ?- int main()" u& E3 r6 Z+ o9 e' ]2 f9 o
- {
5 ]$ e) Z7 }9 H9 P+ N$ x - WSADATA wsd;
& Z8 n2 k' p2 X8 i - SOCKET sClient;$ l# N, l1 e6 ]! i; k- F5 N
- char szBuffer[DEFAULT_BUFFER];8 S6 E$ s9 s2 D2 z! H k
- int ret;/ \8 q7 d* s% J: H. t+ d
- struct sockaddr_in server;
6 U$ x# q( f& y, s - struct hostent *host = NULL;
8 `1 v! S8 n9 z' V% Q+ J! h: C - if (WSAStartup(MAKEWORD(2,2), &wsd) != 0)9 @5 d3 p% |! U' T
- {
% I0 I* e# p* R" U) m) M# c! Z' _ - printf("Failed to load Winsock library!\n");6 @: j' i1 s# E! \( Q) G" `1 a
- return 1;( U" o; e, @2 L: W5 u
- }
' E4 i7 A L" E1 S# Y - printf("Enter a string to send to server:\n");7 N/ b# f [2 g) V
- gets(szMessage);9 e- H' o) Z) }" q# _6 i
- // Create the socket, and attempt to connect to the server
Q( a% d J+ X - sClient = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
' V6 |/ }: N8 M, V. | - if (sClient == INVALID_SOCKET)/ ]! D, p- v& w1 ]; T6 e" U; Q7 H
- {) s/ U; L% r' Q( ^3 z
- printf("socket() failed: %d\n", WSAGetLastError());
7 m c3 W( n5 A7 V - return 1;
! y( Q: B, g0 ? - }3 b2 h9 m% X T+ X7 w9 y
- server.sin_family = AF_INET;
5 [, [5 |$ I- q2 a" F7 A - server.sin_port = htons(iPort);: ]/ O4 o5 @0 o' Z; C
- server.sin_addr.s_addr = inet_addr("127.0.0.1");# o( g" j! I1 X, Y& D
- ; x) q+ a" o: R7 w6 H
- if (connect(sClient, (struct sockaddr *)&server,- Y# l( `/ N3 z: D. k5 c- T
- sizeof(server)) == SOCKET_ERROR), k% i) d( n, c8 u$ d, Y
- {
; m+ ]3 C, [& Q) E/ B7 Y5 l8 G0 r4 ] - printf("connect() failed: %d\n", WSAGetLastError());
2 ~8 I) ^$ C2 v+ y ^ - return 1;
; p, P. U0 c$ ~) {* m4 P R. w/ j - }
3 c0 s; H0 U4 k( b" D! m, [ - // Send and receive data9 y8 X a1 `" x# I C* l+ O, `! ~% n
- ret = send(sClient, szMessage, strlen(szMessage), 0);
6 {7 K+ P1 C0 n - if (ret == SOCKET_ERROR)9 @+ S* O1 u9 ^5 P c7 a
- {
1 [: A2 ?. J. Z - printf("send() failed: %d\n", WSAGetLastError());
. x$ Q L# i$ z# h% [ - }
8 T1 A- y9 i) M" k - else{: g4 F) L. d0 b2 [- b- ]
- printf("Send '%s' \n", szMessage);
n8 z% g k1 }, R - ret = recv(sClient, szBuffer, DEFAULT_BUFFER, 0);) ?9 L1 r/ }) u( s$ ^
- if (ret == SOCKET_ERROR){" u1 ?/ g( p3 S( d: _
- printf("recv() failed: %d\n", WSAGetLastError());; `& p* N: b) I3 c5 {8 a5 }' A
- }% m |) u; h3 V& y9 o- o) Z' k
- else{
; W7 T: W) X3 o8 H1 O' g$ R9 X - szBuffer[ret] = '\0';
5 a% \4 V9 P0 D/ q: m% ^ - printf("RECV: '%s'\n",szBuffer);
6 t; f. `5 f; s, S* D! A - }+ Q& E# a: A; f8 O; d5 A8 z* \/ ?
- }
! o+ `: b$ _6 E5 { - closesocket(sClient);9 r. T4 K# A9 | @
& h5 e, U0 _6 Q: s. y" {* Y- WSACleanup();& {* Z) u% D" w5 |0 E- A
- return 0;4 U. P/ U5 m" i- j+ \( ~9 l
- }
复制代码 服务器程序:server.cpp/ k, ^9 ^8 e6 N8 ?/ l: w
- #include <winsock2.h>' `! @: V3 M- A6 N( |
- #include <stdio.h>. _! A/ l6 _( M8 e
- #include <stdlib.h>
9 C% ^2 [# w- g - 3 c: @/ }, f, V r, K& R
- #define DEFAULT_PORT 51506 |: V# b3 m) n) m& U1 U. _
- #define DEFAULT_BUFFER 4096
! u B) _: V6 U m
! S0 b. O+ Y3 n l6 z- int iPort = DEFAULT_PORT;
# @3 ~+ e) \# E6 i6 h - char szAddress[128];
f8 C: w }/ K
7 V* N5 g0 K8 F( A' a5 y- DWORD WINAPI ClientThread(LPVOID lpParam)
- K( Y- d* `/ b7 M) y2 T - {6 B1 M* B& r" }1 h" U
- SOCKET sock=(SOCKET)lpParam;' U& u6 O0 @$ |1 K% l# B9 B- o
- char szBuff[DEFAULT_BUFFER];
$ `7 v- _! z( b; }% @ - int ret;
8 M% W4 O) ?, f - f1 Y6 F$ }( i: z% V' v
- while(1)+ b" G% {9 V$ y1 U! h
- {
+ ?( J; e+ F( k. j - ret = recv(sock, szBuff, DEFAULT_BUFFER, 0);
9 o4 q5 u/ h3 {( K - if (ret == 0)
3 D0 X9 h5 J7 N p9 | - break;0 |1 p$ _4 ^+ W. Z8 \7 T8 g5 r
- else if (ret == SOCKET_ERROR)
2 h2 k* ]- g, p) I+ Q, [4 {' P - {) G, h, ~2 _ ^, e( j# ]& s
- printf("recv() failed: %d\n", WSAGetLastError());$ c: ` j) c' R! G% R
- break;
) R# l6 h2 ]5 _0 |* \2 O - }4 }% L3 p2 ?( u
- szBuff[ret] = '\0';" G3 X: ~5 a6 L
- printf("RECV: '%s'\n", szBuff); i) [; t' j, }+ s
- if(strcmp(szBuff,"abc")==0){' @- a; _$ _7 @6 \9 z
- memcpy(szBuff,"Send the correct string!",25);! p# x4 `$ P! l7 @) Z ~2 Q* k
- }- A' r# e# ?! E( A* a
- else{. p0 F# Q/ G7 k/ A* U2 N7 e9 P
- memcpy(szBuff,"Send the wrong string!",23);
1 {+ d' t X+ k/ U9 u, t' E - }
& }% K9 G0 b1 Q1 T; D. z$ ?9 y - ret = send(sock, szBuff, strlen(szBuff), 0);1 Z- j! I1 A2 N% b" {
- if (ret == SOCKET_ERROR){
% ]% d( h# F# H% _ - printf("send() failed: %d\n", WSAGetLastError());
3 m/ \1 G& V% n! R4 u& A - }
8 k: `: K! |6 U) q - }
! U3 z% K1 P. m( S - return 0;2 F5 G6 {# Y1 f. l; C
- }
9 d& S9 w; G! Y" i* F: T6 E& z4 i
' W" E$ h; a* S7 y- int main()# |- K6 d2 P5 o, r% \2 v, {: K/ t
- {
! f5 O D5 U& Y& E$ I% ^5 [# m - WSADATA wsd;
: h0 J# x2 O# o/ q - SOCKET sListen,, H2 m- |2 A5 ^8 w! ] s
- sClient;; H5 U- m; ]+ M
- int iAddrSize;
6 K* p; `( [( |$ F. k, | - HANDLE hThread;+ T2 d4 v% s; N
- DWORD dwThreadId;
# U" `/ `6 o! Z: h5 |' w - struct sockaddr_in local,2 f& p& g+ H2 @: J
- client;4 Q: X: l$ |0 ]4 f( s9 R e5 d
) I1 S! P9 g$ p" q9 x- if (WSAStartup(MAKEWORD(2,2), &wsd) != 0)( J2 N7 a" H. z3 h1 ~# k- q- ?
- { E M. z9 ~/ j A# S( v) W
- printf("Failed to load Winsock!\n");
. p( E* Y' I# ?+ N& I - return 1;; E% N4 ~: }! T9 H) @1 J
- }4 [, h* f$ Z( i# d9 v: E( T
- // Create our listening socket
" ]' }& f$ R' J# e/ m9 V - sListen = socket(AF_INET, SOCK_STREAM, IPPROTO_IP);
$ [( E& Y! s$ p7 \3 B - if (sListen == SOCKET_ERROR)5 u2 o) q. ?% a7 x" s
- {
5 V. {) t) U! L( h3 n7 u' U6 s6 J - printf("socket() failed: %d\n", WSAGetLastError());" t( X; b5 `" R
- return 1;, w! d; x# @( u% c' u2 c, Y
- }
5 b; o$ t5 [, O - local.sin_addr.s_addr = htonl(INADDR_ANY);$ {% Q: @+ O$ [& i
- local.sin_family = AF_INET;
/ w) |9 r- V" X* e S0 K5 D - local.sin_port = htons(iPort);
6 V) Z! m$ l/ `. p: \# W7 r. \: T) t! W
9 X) l" W. h- _# |: j2 m- if (bind(sListen, (struct sockaddr *)&local,5 }' ]2 J9 l* \/ {
- sizeof(local)) == SOCKET_ERROR)4 V/ t/ R2 |9 d4 r# A/ w
- {
3 K4 ]) p k1 f: I' J) @ - printf("bind() failed: %d\n", WSAGetLastError());4 K! o. O* r* Z7 |& w3 A
- return 1;
6 ^" `4 O( `& q - }
6 ]. g9 [3 ?# R- h0 w - listen(sListen, 8);
4 T- T0 b W4 y& c8 z) Q6 e - // In a continous loop, wait for incoming clients. Once one0 P8 b+ P9 R- u: r! c
- // is detected, create a thread and pass the handle off to it.
) \' }$ _- c& p5 G8 I, t - while (1)
4 f& G+ ]2 `8 s. I/ Z! U - {
. K1 V9 c6 ^* M, e3 e - iAddrSize = sizeof(client);
9 `2 G$ `9 N) ?9 K+ P - sClient = accept(sListen, (struct sockaddr *)&client,( Z( H3 H# _! j9 G$ W
- &iAddrSize); ; X7 `* w* Q: W0 [5 J; X
- if (sClient == INVALID_SOCKET)
% g3 ^( m$ o5 B- o; t0 a7 S6 M - { ) T2 X' B! ?1 x
- printf("accept() failed: %d\n", WSAGetLastError());
- V5 `. _8 r5 `9 Q - break;
$ i; ~/ G) }/ ^ - }
+ E( ~, M8 ^; |* l( n( I t - printf("Accepted client: %s:%d\n",
+ Y* p2 Z% f+ ]8 L' b; P3 z2 s7 n - inet_ntoa(client.sin_addr), ntohs(client.sin_port));/ t- K; W5 |9 S- V, L* O
- & f" \# t: ~1 q! o8 W0 M
- hThread = CreateThread(NULL, 0, ClientThread,
* r+ W" |- i& ~. d - (LPVOID)sClient, 0, &dwThreadId);
) |4 ?0 A, g5 I - if (hThread == NULL) D/ v0 e2 a) ~# b. M+ X5 K o& G! m) P
- {, b, Z+ U1 h" E1 m! A( ]
- printf("CreateThread() failed: %d\n", GetLastError());
2 S# q/ l4 f" L- T/ T3 u - break;
8 {, W4 V6 ]3 [5 S8 T0 h2 | - }: p" b3 e* |/ K: p
- CloseHandle(hThread);* @. ], }' I+ E ^$ T- f
- }
/ ~# r( B. \" b4 ^ - closesocket(sListen);
" ~0 P3 k) p! G -
+ ?% i( l8 A! w/ x N3 g2 n6 ~ - WSACleanup();
8 [& ^+ m, x2 |; c' j - return 0;
# g- c g7 B5 `$ R9 D; G% _& s2 W - }
复制代码
! ~: e6 Y4 d. m& U6 A( [4 u/ ~/ y. k: r' ~3 _* z) U
8 C! b6 r% g0 u+ k. {8 n
7 F, n' ^3 O. _& f# |8 p% T
( @5 W+ A9 _! H
|
|