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。3 q8 H' D# `: D1 T. O9 G
客户端程序:client.cpp
9 {# i! O4 z$ t" ~7 o5 f! N- #include <winsock2.h>& g5 k. B: C, J. H+ p; g' u9 X
- #include <stdio.h>! l$ G7 U7 {6 F, r, r O
- #include <stdlib.h>
9 p- e' f+ B2 A4 E( h* m. N6 k
( Y6 ?0 U4 i6 _/ F* Q- #define DEFAULT_PORT 5150
% c" l! S4 c8 g; x7 g& D$ M - #define DEFAULT_BUFFER 2048. `- S' u c) M9 h9 C' T; P; n6 ?
- . ~9 h u7 C1 z7 g/ F: o
- char szServer[128],
: R5 `* ~. O! ?6 E5 U# K3 r - szMessage[1024];- k9 l% }% h6 |8 r- `
- int iPort = DEFAULT_PORT;
W# P9 \# R$ Z7 w
8 E6 U/ o6 O+ P! h6 B- int main()
j& @# _0 g+ ^$ d. { - {0 D0 y, p+ B* k. W* T% `
- WSADATA wsd;" y& W2 m% \! Z3 ]* f; H7 g; f
- SOCKET sClient;
$ d7 q b* I7 v) Q - char szBuffer[DEFAULT_BUFFER];
$ R \0 I, r( _& H, z - int ret;7 @7 p5 s3 Z% D; | C6 t# o
- struct sockaddr_in server;% s& L% q7 x+ }5 y0 ~2 }8 O# c
- struct hostent *host = NULL;; L9 [3 R& U5 l- B Z/ X. f
- if (WSAStartup(MAKEWORD(2,2), &wsd) != 0)
* F$ V: M3 j6 ]/ ~: W! g - {% |/ J, l. A3 U! L! I* S
- printf("Failed to load Winsock library!\n");: C. d! O Y; z8 s/ ]6 o
- return 1;5 }/ R% k- J/ m( G% H3 Q. ?
- }
# p; q6 k8 _' Q - printf("Enter a string to send to server:\n");
O: j' N3 n7 C5 J& Q - gets(szMessage);
: u+ u6 t% y9 F7 S7 ] - // Create the socket, and attempt to connect to the server
1 t% ` U0 Q( h9 D) L5 G - sClient = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
# j6 G0 z) |: s3 z7 ^ - if (sClient == INVALID_SOCKET)) Z" A) l# s J7 m
- {+ a+ m* } ]( e5 b
- printf("socket() failed: %d\n", WSAGetLastError()); X3 ]) E% Z: Q5 ^' V3 x. i3 U( j
- return 1;2 Z4 i. A; H1 ?( e% _) Y' o8 D0 \
- }# G3 ^8 t8 p7 t8 a, ?3 y
- server.sin_family = AF_INET;! k- Y- |% G3 V( ]9 w6 v( _
- server.sin_port = htons(iPort);
! J; ~9 f: `1 ~ - server.sin_addr.s_addr = inet_addr("127.0.0.1");
$ |" h9 P- S" d2 @; N0 S% `
+ R4 w5 B+ g+ \8 z- if (connect(sClient, (struct sockaddr *)&server, a2 }4 s1 @4 x+ X1 g$ N
- sizeof(server)) == SOCKET_ERROR)
) A. h1 h- a) w; N' T5 O; k$ Z- r3 j - {+ w% A5 Z& R ?( d( E4 D3 K' G
- printf("connect() failed: %d\n", WSAGetLastError());
0 c! H0 \5 ]3 L - return 1;8 G+ O# }# f! e7 _; J( Y
- }
8 e+ z9 p' v; `. A: h! c - // Send and receive data
: l; y- p6 M4 y - ret = send(sClient, szMessage, strlen(szMessage), 0);
, y2 T t x; w+ G* \0 i - if (ret == SOCKET_ERROR). L3 s# w; G$ S) O0 I# a4 _
- {7 U A5 `6 X: @3 r! I5 }4 R2 X, S$ \+ f
- printf("send() failed: %d\n", WSAGetLastError());2 r$ u" D* A: H6 |4 \
- }
' H- j; u4 F& Z! I3 ~! V1 I3 C3 o - else{& l+ g" A6 m" _. n$ o2 {/ X
- printf("Send '%s' \n", szMessage);0 E h" T. Q1 h" p3 V- X) ?( T% [+ q
- ret = recv(sClient, szBuffer, DEFAULT_BUFFER, 0);/ d% l$ w6 R' O) h; `2 Q/ E
- if (ret == SOCKET_ERROR){7 Q5 {9 \7 K) m" H/ L5 k
- printf("recv() failed: %d\n", WSAGetLastError());6 j1 h/ Y: p" i+ g
- }
2 i9 P% {8 F4 X' o% \, b - else{7 U# a; w2 V5 Y4 y, k
- szBuffer[ret] = '\0';& a0 q7 i3 `! S" d+ k
- printf("RECV: '%s'\n",szBuffer);* L! |# D; C P' w8 R( }# m# w
- }
Y4 U+ S/ ~7 L* i - }8 k4 h; i& ^" u0 P* D6 R2 F
- closesocket(sClient);
; l2 i8 c' ^$ {, k' U/ D - / J# V% s; u. O- w; S
- WSACleanup();6 ^1 b' I8 D; p1 `( f" z7 E V' R+ D
- return 0;
6 C+ J3 w. _6 E - }
复制代码 服务器程序:server.cpp8 i- ? {; B* t
- #include <winsock2.h>7 J( I. R+ f4 k; n: i2 k. R( i
- #include <stdio.h>: y3 ^& o J5 [
- #include <stdlib.h>
- G) ~: t; M* _' _* P
' Z' D1 e( J9 A4 _/ H- #define DEFAULT_PORT 5150: C0 `# Y+ @; O7 d% E s) a, N
- #define DEFAULT_BUFFER 4096
' m# v. H6 h" t
+ t3 k W0 |7 V Q0 v! D- int iPort = DEFAULT_PORT;
7 y. N7 l0 R7 q* V' U, a - char szAddress[128];* L# x/ _/ |9 g# }+ r0 u* W% b
, {$ n$ n. W. q/ R- DWORD WINAPI ClientThread(LPVOID lpParam)9 _& s" _" ]1 t6 M# _+ `" E
- {7 ?% V$ x; d& I6 Q& V
- SOCKET sock=(SOCKET)lpParam;
6 j* o6 N3 O. W0 H4 b( N, D - char szBuff[DEFAULT_BUFFER];
7 v! F& ]; b. t& p; o - int ret;! F2 ]% u( p5 F6 O# N# W
- x5 E& l7 \! P) I; H: o- while(1)
1 k% Q0 W, y9 N+ h - {
; ~$ v5 u9 a1 {8 g9 {% u, |7 F# ]5 ] - ret = recv(sock, szBuff, DEFAULT_BUFFER, 0);' s- b3 u7 ]2 ] m' I4 n* b: e
- if (ret == 0)
& k1 v u( v2 b: ]& [ - break;
+ A% _8 _4 }6 K/ P/ e) v- d - else if (ret == SOCKET_ERROR)
6 l1 u1 [4 y) \2 s8 H - {3 M8 R( _! N6 [1 j' ^1 `
- printf("recv() failed: %d\n", WSAGetLastError());5 s3 i, r3 E7 t2 z' d) O
- break;0 m- ^- Z' J" T$ o; k# `
- }5 y" l! W) ~; C8 ?' ^
- szBuff[ret] = '\0';
% ?8 G8 z6 r" }+ U! d - printf("RECV: '%s'\n", szBuff);, [; p6 l. U6 x9 K9 J; W: u
- if(strcmp(szBuff,"abc")==0){
H* X9 |$ W( I$ U4 P! J" {( @0 O7 r - memcpy(szBuff,"Send the correct string!",25);, x9 F+ Y! J) \+ R3 U7 K& O& h
- }
$ {6 U5 ?' O3 W1 |7 ?: m9 N( `3 W! e7 O - else{
- Z. M1 ~% C+ s$ T" p# h - memcpy(szBuff,"Send the wrong string!",23);" @$ `+ e% O9 p0 ~9 r. V
- }
& c5 K, ~0 _' B. S2 r8 s) j - ret = send(sock, szBuff, strlen(szBuff), 0);, L" S6 L6 r/ E% i9 S
- if (ret == SOCKET_ERROR){
- [9 n# Y) T, w% E% Q/ L3 S - printf("send() failed: %d\n", WSAGetLastError());6 [0 A7 i' p- o5 ^- m5 E* l
- }
% v ?7 X' I1 V2 n) }5 u - }
/ I% r( G4 E; ~# A - return 0;! h& i3 @2 J" Z2 N& s' q4 _' Z
- }' D6 l/ Y0 u" g5 N% B3 e. Z
2 T: Q. x+ g5 _: V0 U4 l- int main(): H; E5 M% [4 `$ I* J e
- {8 [4 h% ^3 t, f; U& r
- WSADATA wsd;
& x; A$ U. w0 Y, E5 s - SOCKET sListen,' V/ {, ]: R) p1 k0 n/ \! I
- sClient;% _3 Y$ | }1 M9 `$ X% c
- int iAddrSize;
6 Y: U! s+ R! J* J6 x) P - HANDLE hThread;9 q" T9 O/ x& w; Y8 i. U; N, ^9 y
- DWORD dwThreadId;" {/ X2 h1 L0 k) E( m9 W
- struct sockaddr_in local,
3 F `* u8 A6 f5 O1 } - client;
6 L- S4 C; L7 B! H1 F" d) R! Z" G
8 ?6 ]+ S; X" q) h' l- if (WSAStartup(MAKEWORD(2,2), &wsd) != 0)
$ \4 ~/ n/ I3 ? - {0 @3 l7 D. T& j' _
- printf("Failed to load Winsock!\n");
4 C" q, g! t i2 a- W - return 1;. Z T" H4 g0 ]* m
- }% J" p1 i% q3 v: h! n4 a4 I
- // Create our listening socket
# o) c4 c. _+ p$ h5 Z - sListen = socket(AF_INET, SOCK_STREAM, IPPROTO_IP);
+ C- e) ]- H" O# Q' ^# g: z - if (sListen == SOCKET_ERROR); P- i' s1 {% B5 {( D! r
- {
0 h, V- I$ Y. ]7 G! y# T& v9 a. @ - printf("socket() failed: %d\n", WSAGetLastError());$ s) u/ w+ @; b: O$ }! o2 \9 L8 M
- return 1;
9 V5 z7 z% i* F - }
" \" r$ G% r) V/ V6 d - local.sin_addr.s_addr = htonl(INADDR_ANY);6 m8 K+ S/ o z1 b
- local.sin_family = AF_INET;' f% A) ]! H( h9 G# |
- local.sin_port = htons(iPort);) e3 x: v/ y5 x; \5 I
1 W7 H3 i1 @: q# i# ]0 M; E2 K& ~+ Y- if (bind(sListen, (struct sockaddr *)&local,7 N2 v7 W* T9 [0 b1 @* e
- sizeof(local)) == SOCKET_ERROR)0 E4 S1 x9 F6 r& g
- {$ F6 D$ U; H7 v Q7 k0 \
- printf("bind() failed: %d\n", WSAGetLastError());; q* E5 q& Z0 d' n" c
- return 1;
' j E+ T/ r" }4 f/ v2 z2 s - }
0 `% Z8 e w! G4 c' O: o - listen(sListen, 8);5 f1 Q# p6 x8 r) C Z( Q7 r+ O
- // In a continous loop, wait for incoming clients. Once one: \) ~% Z' }0 \/ Z* y
- // is detected, create a thread and pass the handle off to it.
+ K9 A% N q5 r* ~ - while (1)9 }6 I& k' j5 h0 T' F2 O( y% T
- {- O0 ^) J8 Q8 I6 d/ b0 ]+ ]. G
- iAddrSize = sizeof(client);
5 B1 ^! {, a0 ^- Q0 h5 I( H! H - sClient = accept(sListen, (struct sockaddr *)&client,) \3 g* q" D( Q0 x( H8 t
- &iAddrSize);
4 c& W: }8 [* q! b7 K( [0 W - if (sClient == INVALID_SOCKET)# q: p$ c* x! Y( ^0 ~" ]
- {
4 ~, y6 M9 _) r - printf("accept() failed: %d\n", WSAGetLastError());
1 q: r) ]7 C# m% w. v - break;/ t" ~, _* o, x3 y
- }
# m! d8 X4 D. T- ^" U - printf("Accepted client: %s:%d\n",6 }/ r9 m7 f2 ~1 v1 T
- inet_ntoa(client.sin_addr), ntohs(client.sin_port));" X3 {5 T$ S2 m
4 l# `5 n; M9 W' U- hThread = CreateThread(NULL, 0, ClientThread,( [; ]- \4 Z) ~ X# c
- (LPVOID)sClient, 0, &dwThreadId);1 B3 C) E. s% P% Q
- if (hThread == NULL)
, W" C/ T8 W0 ` - {+ f$ l( [/ [% L8 n) X, j; J
- printf("CreateThread() failed: %d\n", GetLastError());
" j3 J- z' T y - break;
, u& ^) U0 P9 R4 [ - } c5 V& m/ a9 X3 h. a5 ?. E+ W$ g
- CloseHandle(hThread);' n+ ^7 `9 Y" a+ K) P9 e
- }
6 ]0 Q8 k# s' g9 p: y6 ` - closesocket(sListen);/ R; c, o& b, M' T
- 2 K3 V' w' W0 _+ O3 R C. x* a
- WSACleanup();
, ~, {0 X T) n - return 0;
' R6 P. |; B! m, `% a - }
复制代码 ! s m+ H3 x+ I( C0 L0 Z( T" ^
) Y3 z. D" L* r
4 R6 N' S) e9 h) A
8 }' f) Y+ o$ t- Q) ]4 q7 C) H P% x2 Z
|
|