Windows Socket 通信示例-优快云博客

Code:

#include<windows.h>
#include<winsock.h>
#include"resource.h"
#include"PROCESS.H"
#definePORTNUM5000//端口号
#defineMAX_PENDING_CONNECTS4//等待连接队列的最大长度
#defineWM_MESSAGE_REVED(WM_USER+0)//接收到数据包消息
#defineWM_MESSAGE_SENDED(WM_USER+1)//发送出到数据包消息
//主线程向负责接收和发送的线程传递参数
typedefstruct
{
HWNDhwnd;//主线程的窗口句柄
BOOLbContinue;//状态指示参数
SOCKETWinSocket;//监听socket
SOCKADDR_INlocal_sin,//本地socket地址
accept_sin;//接收连接的socket地址
}
PARAMS,*PPARAMS;
charszServerA[100];//ASCIIstring
TCHARszServerW[100];//Unicodestring
TCHARszError[100];//Errormessagestring
TCHARszSendBuffer[100];//线程间共享缓冲池
SOCKETClientSock=INVALID_SOCKET;//服务器和客户端通信的Socket
BOOLWINAPIMainDlgProc(HWNDhDlg,UINTmsg,WPARAMwParam,LPARAMlParam);
voidNetworkThread(PVOIDpvoid);
intWINAPIWinMain(
HINSTANCEhInstance,//实例句柄
HINSTANCEhPrevInstance,//NULL
LPTSTRlpCmdLine,//用于运行程序的命令行
intnCmdShow)//程序的最初的显示方式
{
WNDCLASSwc;
GetClassInfo(NULL,WC_DIALOG,&wc);//Getdialogboxclassinfo
wc.hInstance=hInstance;
wc.lpszClassName="Client";//so'swecansuperclassit
wc.lpfnWndProc=DefDlgProc;//allthisforanicon...sheesh
wc.hIcon=LoadIcon(hInstance,MAKEINTRESOURCE(100));
wc.cbWndExtra=DLGWINDOWEXTRA;
if(!RegisterClass(&wc))//Quitifregistrationfails
return(FALSE);
//hInst=hInstance;//Nowjuststartthemaindialogandexit
DialogBox(hInstance,MAKEINTRESOURCE(ID_CLIENT),NULL,MainDlgProc);
returnTRUE;
}
//===MainDialogBox========================================================
BOOLWINAPIMainDlgProc(HWNDhDlg,UINTmsg,WPARAMwParam,LPARAMlParam)
{
staticSOCKADDR_INlocal_sin,//本地socket地址
accept_sin;//接收连接对象的地址
staticSOCKADDR_INdestination_sin;//服务器的socket地址
staticPHOSTENTphostent=NULL;//指向服务器的HOSTENT结构
staticWSADATAWSAData;//包含了Winsocket执行后的细节
staticPARAMSparams;
staticSOCKETWinSocket=INVALID_SOCKET;//Windowsocket
switch(msg)
{
caseWM_INITDIALOG://初始化对话框消息
{
//初始化Winsocket.
if(WSAStartup(MAKEWORD(1,1),&WSAData)!=0)
{
wsprintf(szError,TEXT("WSAStartupfailed.Error:%d"),
WSAGetLastError());
MessageBox(NULL,szError,TEXT("Error"),MB_OK);
returnFALSE;
}
//创建一个TCP/IPsocket,WinSocket.
if((WinSocket=socket(AF_INET,SOCK_STREAM,0))==INVALID_SOCKET)
{
wsprintf(szError,TEXT("Allocatingsocketfailed.Error:%d"),
WSAGetLastError());
MessageBox(NULL,szError,TEXT("Error"),MB_OK);
returnFALSE;
}
//填写本地socket地址信息
local_sin.sin_family=AF_INET;
local_sin.sin_port=htons(PORTNUM);
local_sin.sin_addr.s_addr=htonl(INADDR_ANY);
//把本地地址绑定到WinSocket.
if(bind(WinSocket,
(structsockaddr*)&local_sin,
sizeof(local_sin))==SOCKET_ERROR)
{
wsprintf(szError,TEXT("Bindingsocketfailed.Error:%d"),
WSAGetLastError());
MessageBox(NULL,szError,TEXT("Error"),MB_OK);
closesocket(WinSocket);
returnFALSE;
}
//建立一个socket监听到来的连接
if(listen(WinSocket,MAX_PENDING_CONNECTS)==SOCKET_ERROR)
{
wsprintf(szError,
TEXT("Listeningtotheclientfailed.Error:%d"),
WSAGetLastError());
MessageBox(NULL,szError,TEXT("Error"),MB_OK);
closesocket(WinSocket);
returnFALSE;
}
params.hwnd=hDlg;
params.bContinue=TRUE;
params.WinSocket=WinSocket;
params.accept_sin=accept_sin;
params.local_sin=local_sin;
_beginthread(NetworkThread,0,¶ms);
}
caseWM_PAINT://对话框绘制消息
{
PAINTSTRUCTps;
HDChDC;
RECTRect;
hDC=BeginPaint(hDlg,&ps);
GetClientRect(hDlg,&Rect);
FillRect(hDC,&Rect,GetProp(hDlg,"BRUSH"));
EndPaint(hDlg,&ps);
return0;
}
caseWM_MESSAGE_REVED://辅助线程接收到消息
{
//把接收到的消息在对话框中显示
SetWindowText(GetDlgItem(hDlg,IDC_EDIT1),szServerW);
return0;
}
caseWM_COMMAND://处理从控件传递来的消息
{
if(wParam==IDC_SEND)
{
//如果用户点击发送，从输入框中取得文本
GetWindowText(GetDlgItem(hDlg,IDC_EDIT),
szSendBuffer,GetWindowTextLength(GetDlgItem(hDlg,IDC_EDIT)));
//发送文本
if(send(ClientSock,szSendBuffer,strlen(szSendBuffer)+1,0)
==SOCKET_ERROR)
{
wsprintf(szError,
TEXT("Sendingdatatotheserverfailed.Error:%d"),
WSAGetLastError());
MessageBox(NULL,szError,TEXT("Error"),MB_OK);
}
}
elseif(wParam==IDCANCEL)
{
EndDialog(hDlg,TRUE);
}
return(TRUE);
}
}
returnFALSE;
}
//辅助线程，负责socket通信
voidNetworkThread(PVOIDpvoid)
{
volatilePPARAMSpparams;
intindex=0,//索引
iReturn;
intaccept_sin_len;//accept_sin的长度
pparams=(PPARAMS)pvoid;
accept_sin_len=sizeof(pparams->accept_sin);
//接收来自发送到WinSocket的连接请求
ClientSock=accept(pparams->WinSocket,
(structsockaddr*)&(pparams->accept_sin),
(int*)&accept_sin_len);
//停止接收客户端的连接请求
closesocket(pparams->WinSocket);
if(ClientSock==INVALID_SOCKET)
{
wsprintf(szError,TEXT("Acceptingconnectionwithclientfailed.")
TEXT("Error:%d"),WSAGetLastError());
MessageBox(NULL,szError,TEXT("Error"),MB_OK);
}
for(;;)
{
//从客户端接收数据
iReturn=recv(ClientSock,szServerA,sizeof(szServerA),0);
//如果有数据，就显示之
if(iReturn==SOCKET_ERROR)
{
wsprintf(szError,TEXT("Nodataisreceived,recvfailed.")
TEXT("Error:%d"),WSAGetLastError());
MessageBox(NULL,szError,TEXT("Server"),MB_OK);
break;
}
elseif(iReturn==0)
{
MessageBox(NULL,TEXT("Finishedreceivingdata"),TEXT("Server"),
MB_OK);
break;
}
else
{
//把ASCII码字符串转换成Unicode码字符串
for(index=0;index<=sizeof(szServerA);index++)
szServerW[index]=szServerA[index];
//显示从服务器接收到的字符串
//MessageBox(NULL,szClientW,TEXT("ReceivedFromServer"),MB_OK);
SendMessage(pparams->hwnd,WM_MESSAGE_REVED,0,0);
}
}
//发送一条消息到客户端
//禁止ClientSock的接收和发送端口.
shutdown(ClientSock,0x02);
//关闭ClientSock.
closesocket(ClientSock);
WSACleanup();
}

C Socket服务器