學習內容，參見《windows網路程式設計》 第7章 winsock基礎
伺服器/客戶端連線模型見下圖。
服務端流程
客戶端流程
使用windows的winsock 2程式設計，建立win32控制台工程，進行工程配置。
服務端**，tcpserver.cpp。
//#include "stdafx.h"
#include #include #include #define default_port 5150
#define default_buffer 4096
int iport = default_port;//port to listen for clients on
bool binte***ce = false;//listen on the specified inte***ce
bool brecvonly = false;//receive data only; don't echo back
tchar szaddress[128];//inte***ce to listen for clients on
//print usage information and exit
void usage()
//parse the command line arguments, and set some global flags
//to indicate what actions to perform
void validateargs(int agrc, _tchar** argv)
break;
case _t('o'):
//只接受資料
brecvonly = true;
break;
default:
usage();
break;}}
}}dword winapi clientthread(lpvoid lpparam)
else if (socket_error == ret)
szbuff[ret] = '\0';
printf("recv:'%s'\n", szbuff);
//if we selected to echo the data back, do it
if (!brecvonly)
else if (socket_error == ret)
nleft -= ret;
idx += ret;}}
}return 0;
}int _tmain(int argc, _tchar* argv)
//create our listening socket
socket slisten = socket(af_inet, sock_stream, ipproto_ip);
if (slisten == socket_error)
//select the local inte***ce, and bind to it
struct sockaddr_in local;
if (binte***ce)
}else
local.sin_family = af_inet;
local.sin_port = htons(iport);
//繫結監聽網絡卡位址和埠
if (bind(slisten, (struct sockaddr*)&local, sizeof(local)) == socket_error)
//開始監聽客戶端
listen(slisten, 8);
printf("begin accept on port:%d\n", iport);
//in a continuous loop, wait for incoming clients.once one
//is detected, create a thread and pass the handle off to it
while (true)
printf("accepted client:%s:%d\n", inet_ntoa(client.sin_addr), ntohs(client.sin_port));
dword dwthreadid;
handle hthread = createthread(null, 0, clientthread, (lpvoid)sclient,
0, &dwthreadid);
if (hthread == null)
closehandle(hthread);
}closesocket(slisten);
wsacleanup();
return 0;}
客戶端**，tcpclient.cpp。
//#include "stdafx.h"
#include #include #include #define default_count 5
#define default_port 5150
#define default_buffer 2048
#define default_message _t("this is a test of the emergency broadcasting system")
tchar szserver[128];
tchar szmessage[1024];
int iport = default_port;
dword dwcount = default_count;
bool bsendonly = false;
//print usage information and exit
void usage()
//parse the command line arguments, and set some global flags
//to indicate what actions to perform
void validateargs(int argc, _tchar** argv)
break;
case _t('s'):
if (_tcslen(argv[i]) > 3)
break;
case _t('n'):
if (_tcslen(argv[i]) > 3)
break;
case _t('o'):
bsendonly = true;
break;
default:
usage();
break;}}
}}int _tmain(int argc, _tchar* argv)
_tcscpy_s(szmessage, default_message);
//create the socket, and attempt to connect to the server
socket sclient = socket(af_inet, sock_stream, ipproto_ip);
if (sclient == invalid_socket)
struct sockaddr_in server;
server.sin_family = af_inet;
server.sin_port = htons(iport);
//if the supplied server address wasn't in the form
//"aaa.bbb.ccc.ddd,"it's a host name, so try to resolve it
int nserverlen = (int)_tcslen(szserver);
if (0 == nserverlen)
copymemory(&server.sin_addr, host->h_addr_list[0], host->h_length);
}else
if (connect(sclient, (struct sockaddr*)&server, sizeof(server))
== socket_error)
//send and receive data
char szbuffer[default_buffer];
int ret = 0;
for (int i = 0; i < (int)dwcount; i++)
else if (ret == socket_error)
printf("send %d bytes\n", ret);
if (!bsendonly)
else if (ret == socket_error)
szbuffer[ret] = _t('\0');
printf("recv [%d bytes]:'%s'\n", ret, szbuffer);}}
closesocket(sclient);
wsacleanup();
return 0;
}
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