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。$ i; O! ?( D0 l1 K m, D6 Q; }" L+ @
客户端程序:client.cpp" e3 q% Z, E% D' S: B7 k# ?( L; `
- #include <winsock2.h>0 I1 j8 `2 T1 l9 a
- #include <stdio.h>
$ P+ K `0 x9 u r& z/ M/ ^9 p - #include <stdlib.h>
9 Z f2 H9 T% n3 _$ Q& H! P4 `5 M
+ O+ @+ c+ q, E# d! Q# d- #define DEFAULT_PORT 51505 i2 |2 F# C8 s8 o1 |
- #define DEFAULT_BUFFER 2048
+ B& h# t4 X1 h - , N2 P6 O8 Z* R9 L1 E9 Q7 G( D' H
- char szServer[128],
4 Y; i1 i# |' N% s - szMessage[1024];
+ }/ k8 F2 K/ ?# D; v - int iPort = DEFAULT_PORT;
2 J; L. r1 u# x; q. I& ~
9 }$ i$ q+ h6 s7 ?: \5 ~- int main(). | y, e: n/ s* [! ^3 o; k: e
- {8 i) S( h& u( Y- X+ n4 }7 J& ]
- WSADATA wsd;; s& _/ {1 B: [+ x4 K# b! m+ ^
- SOCKET sClient;
9 n1 v$ J, B! Q- |6 @( A - char szBuffer[DEFAULT_BUFFER];
% w, Q8 e) h( f) N9 M/ }; R - int ret;
3 y* Z6 |# \7 y4 S8 o - struct sockaddr_in server;6 b8 f. }& X6 f! @
- struct hostent *host = NULL;' k( o$ `. k& e2 \2 X! m5 j
- if (WSAStartup(MAKEWORD(2,2), &wsd) != 0)
: b* I* p( l2 Y- ~( k! {2 q - {' s2 {, D' ~2 R$ Y' `( [
- printf("Failed to load Winsock library!\n");& D& n0 U8 h( x# B& ~9 F1 ~
- return 1;8 y2 b4 m- M9 A6 Q
- }4 T" o* K B! {& p
- printf("Enter a string to send to server:\n");
! l j" o* g k$ z/ l$ o; g - gets(szMessage);( b! ?: w+ c2 _; i% Y
- // Create the socket, and attempt to connect to the server1 v2 f C! K6 b# z! V
- sClient = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
3 s4 i" j# `, x R+ n- |* l2 y - if (sClient == INVALID_SOCKET)3 e1 P; M# ^1 e
- {# B# d4 r5 d6 T3 `. t
- printf("socket() failed: %d\n", WSAGetLastError());
. f3 c. O: T) c. G+ J3 ? - return 1;1 i6 |8 q# V$ b1 ]! s1 F/ y
- }# A) i3 q: B" A% j" p, i
- server.sin_family = AF_INET;
/ T' S- y; W' y- W& A - server.sin_port = htons(iPort);! H& f; K0 u' e! d
- server.sin_addr.s_addr = inet_addr("127.0.0.1");. t# B4 K" C7 E9 e$ K; F f5 E
- @; ~4 C+ F6 f+ ?# j
- if (connect(sClient, (struct sockaddr *)&server,; g% ]* w) \+ P. z! x; e; N- c
- sizeof(server)) == SOCKET_ERROR)0 X4 g8 z+ j* W$ z" x! X
- {7 D5 W2 u: |9 W" D. g& B; l
- printf("connect() failed: %d\n", WSAGetLastError());
) S# b' N8 d. g( w: V# V8 k - return 1;
& K4 n L6 M' j* ^) V - }
- N1 o' _ u9 |5 g - // Send and receive data
0 G& p: o5 p; ]; v4 j8 Y6 F - ret = send(sClient, szMessage, strlen(szMessage), 0);$ w- `* l3 y6 X) k* F& ^
- if (ret == SOCKET_ERROR)9 d2 ~$ B2 f, Q9 d) ^- L$ A+ V
- {
4 _! K. L1 U5 P. Y0 T - printf("send() failed: %d\n", WSAGetLastError());+ o* g2 o t. V) `+ W
- }
. k* s' P9 h* I& Q B7 [ - else{
8 h0 R( O( ~: S! _3 _ r - printf("Send '%s' \n", szMessage);
( x) z& K+ C" [, j# c& K - ret = recv(sClient, szBuffer, DEFAULT_BUFFER, 0);3 v4 S8 k& s8 @, d
- if (ret == SOCKET_ERROR){3 @# L/ R* D3 X ?8 g- O
- printf("recv() failed: %d\n", WSAGetLastError());. l( [' S# T( V- ^2 t% K/ o
- }
! |/ I& Z2 W6 z5 T! v; N# h" v g - else{
( h6 Y% g" e4 `1 m7 M% K$ m) ] - szBuffer[ret] = '\0';. e6 N- q4 [$ o; ?0 e# `
- printf("RECV: '%s'\n",szBuffer);: l' g L3 u# {0 s m
- }
2 R* Q" o/ p- i! o. H Q. b% P - }2 K/ A. {/ W1 |4 z! n& Q7 f2 W
- closesocket(sClient);' t: l& G, L0 k
- / y- [5 J0 [: n
- WSACleanup();
X! w3 ^) o1 @" D5 X. p2 w% f - return 0;( \0 {) d/ T) }0 x6 ~
- }
复制代码 服务器程序:server.cpp; Q4 Y' F1 Z8 a( `
- #include <winsock2.h>
& T) O" a/ S1 I1 }) X0 o* U% ]: d# i - #include <stdio.h>6 N/ O! I- f$ R% m8 x2 J3 l% @ W
- #include <stdlib.h>
: m4 j, e0 A% \; |: g' R - ; k k# u# Y9 H( p5 q* H2 C, {% W
- #define DEFAULT_PORT 51504 S: f6 Q- I: N v+ F9 n( o9 ]7 S" a, m
- #define DEFAULT_BUFFER 40963 x- y/ f% j! Z# E, U7 H& {# e5 u
( _4 v/ \1 g0 v: J! Z/ a, K- int iPort = DEFAULT_PORT;0 |3 e# @# v) r& o! o& v
- char szAddress[128];4 @% ^; b4 s+ a8 L
- ) U( M o' P1 A& u* Y
- DWORD WINAPI ClientThread(LPVOID lpParam)' Y6 c; X7 v; O
- {
4 q2 m. f8 L2 Y1 X3 Y6 \0 ^7 ? - SOCKET sock=(SOCKET)lpParam;
" W- y1 ^( R2 j0 V3 I - char szBuff[DEFAULT_BUFFER];
1 s4 q% q* e+ Q9 ^( p - int ret;4 c/ m, P& N K! {+ v
- f" a) {& f" S. a- while(1)! C6 ~& _* j3 H% @# m/ P
- {7 @7 w+ Y& x3 Q
- ret = recv(sock, szBuff, DEFAULT_BUFFER, 0);% N+ P2 n/ V5 c6 S
- if (ret == 0)
9 z z, ^" [* O1 r* l - break;
2 C1 G6 d A0 j h8 @& W4 y - else if (ret == SOCKET_ERROR)
- A* F$ ^9 H2 O' k0 F r' R- c5 P2 C - {
* Q$ m+ P+ |, G% p! D# v( P* D - printf("recv() failed: %d\n", WSAGetLastError());$ O7 V, M9 s- Z ]
- break;$ E; r$ G. s0 _; E
- }
, c$ U' Y$ V: w0 \* x3 c - szBuff[ret] = '\0';
, A# \% q7 a6 A. i1 H - printf("RECV: '%s'\n", szBuff);. H5 D4 ?! E9 g% P: D6 a4 |( g
- if(strcmp(szBuff,"abc")==0){
) Y9 A9 l3 U" W! m. K. v1 t - memcpy(szBuff,"Send the correct string!",25);
: r9 I3 V. R) g% d* V - }% B3 P/ F2 t9 e' G
- else{
: f# u( i: G* L8 f - memcpy(szBuff,"Send the wrong string!",23);# g4 N/ g2 @6 @6 ^ D$ O
- }$ ^( s o6 @' D6 F7 u
- ret = send(sock, szBuff, strlen(szBuff), 0);( \5 P! W U' E: }
- if (ret == SOCKET_ERROR){2 x! ]: F# M8 K' C& z( e A( j% r
- printf("send() failed: %d\n", WSAGetLastError());
% L) |. j; m6 p/ h+ Y - }
$ |7 f$ w J1 Z" \ - }
7 Z5 }2 F# r7 \: y @5 I8 Q6 z9 | - return 0;
2 i0 a& i: Y F( Q/ g - }: b+ f) U% p8 a( T) m' L0 t5 a
3 H7 ~$ V0 ~3 E9 E) z( K- int main()
: u! c/ x9 A7 m6 r - {
! n% G& M; L$ R& m) e; S - WSADATA wsd;) o+ u- L1 o7 g& D. ~, P
- SOCKET sListen,
8 ~% u g0 Q6 O- w0 x' w; ?& K- n; O - sClient;
; I) g' V5 W6 {8 P1 C/ F - int iAddrSize;2 J$ d3 @+ t( i6 y |
- HANDLE hThread; [9 q0 F2 C1 l+ @# y& U8 z
- DWORD dwThreadId;
3 T2 }$ D7 g# ?+ d, P$ S$ O - struct sockaddr_in local,( Q2 _6 j3 `5 D( i
- client;
+ Q4 B+ E2 \& _( \ |# f! W
% I; A0 R u% O' U9 d- if (WSAStartup(MAKEWORD(2,2), &wsd) != 0)
$ `) A% `3 l" U; r, j4 w! m - {
* Z. G1 W8 L) |+ v$ I3 B - printf("Failed to load Winsock!\n");8 j6 c, S7 n4 L' n" `
- return 1;0 J) M+ c" O6 z& z+ }
- }' N8 a1 D2 q- S; d
- // Create our listening socket/ E& R( b! ?+ w, |
- sListen = socket(AF_INET, SOCK_STREAM, IPPROTO_IP);
$ k; M7 ^" E4 n, } - if (sListen == SOCKET_ERROR)( t7 L1 i8 W% g! V: _+ N" q
- {: S p1 S+ ]3 ~2 Y. |$ d* q
- printf("socket() failed: %d\n", WSAGetLastError());& i/ z" n) ?4 }/ q: P7 \2 c
- return 1;: \" h* {# _- ~. _! E5 N: |
- }
" }# j8 g+ ?% ?. @1 Y' Z - local.sin_addr.s_addr = htonl(INADDR_ANY);% Z1 r' ^+ ?, M) Q! ^/ @% P3 I. D
- local.sin_family = AF_INET;
8 G/ O9 K ~# @% ]7 h. d - local.sin_port = htons(iPort);9 q( O' `3 n0 h' Y
, g. d9 \7 i2 j2 q4 r1 y- if (bind(sListen, (struct sockaddr *)&local,
! \+ V5 k( E5 q: L' P( ]5 r8 R - sizeof(local)) == SOCKET_ERROR); Y6 |7 N0 E) S# g$ ?
- {
0 J5 x4 G/ E- [$ s6 O7 e& B/ e - printf("bind() failed: %d\n", WSAGetLastError());
0 c3 U' q: p. l: |9 o: d) U+ a - return 1;- B5 L! b1 z; F3 L, N
- }' E: J+ v: H: D6 S+ O
- listen(sListen, 8);3 |' V4 a& `* g* k# g
- // In a continous loop, wait for incoming clients. Once one' |& l/ l& P7 N; I3 Q6 Y6 [- w
- // is detected, create a thread and pass the handle off to it.
, Z- `/ _1 \$ k# E - while (1): S F Q! S0 Q1 ?4 m' B
- {
1 n% q% p' l/ d- c& K: W - iAddrSize = sizeof(client);
1 H3 }5 `1 j) h4 u; y/ s: S - sClient = accept(sListen, (struct sockaddr *)&client,. _+ ^* @! B. c) t
- &iAddrSize);
5 `6 m: U* i5 y7 _" N - if (sClient == INVALID_SOCKET); S: q D7 p5 \2 s7 d
- { 3 E. n4 X/ o4 A9 k% C: |
- printf("accept() failed: %d\n", WSAGetLastError());1 q4 X/ n8 z+ e' R
- break;1 H3 q' u, \' ^4 ^% m& y
- }
. G5 e2 M- Q# @' q: m5 l - printf("Accepted client: %s:%d\n",
3 y: @9 y) w6 `5 L7 }& k - inet_ntoa(client.sin_addr), ntohs(client.sin_port));
$ E5 d6 d& k' y6 o) G4 u$ w( \. y( p! c - # n# h3 h/ m+ f2 c7 Y
- hThread = CreateThread(NULL, 0, ClientThread,' z; C* I( m. m& _2 b! R2 \- ?
- (LPVOID)sClient, 0, &dwThreadId);
; R* x1 C+ w( N { e - if (hThread == NULL)+ u0 K0 n/ S* }# k2 I: N
- {, M, X, W# m/ \
- printf("CreateThread() failed: %d\n", GetLastError());" L6 X' M& F9 X4 V) s
- break;
2 k8 T$ C3 {$ U9 P8 } - }2 m5 t7 v6 I% k P$ ^% q% m# P
- CloseHandle(hThread);
3 d0 j, V' e6 |# D7 u1 _( L - }" {; s6 L' b3 z/ N
- closesocket(sListen);
/ S& ~! r$ e8 T - / @( _" ~2 h% N2 Z
- WSACleanup();
, t; o l0 s7 C3 u" N2 N - return 0;
# M! e- W# k! q4 i1 j - }
复制代码 + l/ {/ O: P! x6 G8 |6 B! z$ R
6 G* J3 R$ l+ Z# v- o" |4 Z5 R
U2 }1 J0 f. Z9 O- j% B3 X8 W' |' W: o! e5 U# D2 P& \
( k: E, b& [) ?# }- C |
|