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服务端程序
#include <Winsock2.h>
#include <stdio.h>
void main()
{
//加载1.1版本的套接字库
WORD wVersionRequested;
WSADATA wsaData;
int err;
wVersionRequested = MAKEWORD( 1, 1 );
err = WSAStartup( wVersionRequested, &wsaData );
if ( err != 0 )
{
return;
}
if ( LOBYTE( wsaData.wVersion ) != 1 ||HIBYTE( wsaData.wVersion ) != 1 )
{
WSACleanup( );
return;
}
//创建套接字
SOCKET sockSrv=socket(AF_INET,SOCK_STREAM,0);
//绑定
SOCKADDR_IN addrSrc;
addrSrc.sin_family=AF_INET;
addrSrc.sin_port=htons(7000);
addrSrc.sin_addr.S_un.S_addr=htonl(INADDR_ANY);
bind(sockSrv,(SOCKADDR*)&addrSrc,sizeof(SOCKADDR));
//将套接字设置为监听模式
listen(sockSrv,5);
SOCKADDR_IN addrClient;//接受客户端地址信息
int len=sizeof(SOCKADDR);
while(1)//等待客户的连接请求
{
SOCKET sockConn=accept(sockSrv,(SOCKADDR*)&addrClient,&len);
char sendBuf[100];
sprintf(sendBuf,"Welcome %s to http://www.sunxin.org",inet_ntoa(addrClient.sin_addr));
send(sockConn,sendBuf,strlen(sendBuf)+1,0);//向客户端发送数据
char recvBuf[100];
recv(sockConn,recvBuf,100,0);//客户端接收数据
printf("%s\n",recvBuf);
closesocket(sockConn);
}
}
#include <Winsock2.h>
#include <stdio.h>
void main()
{
//加载1.1版本的套接字库
WORD wVersionRequested;
WSADATA wsaData;
int err;
wVersionRequested = MAKEWORD( 1, 1 );
err = WSAStartup( wVersionRequested, &wsaData );
if ( err != 0 )
{
return;
}
if ( LOBYTE( wsaData.wVersion ) != 1 ||HIBYTE( wsaData.wVersion ) != 1 )
{
WSACleanup( );
return;
}
SOCKET sockClient=socket(AF_INET,SOCK_STREAM,0);
SOCKADDR_IN addrSrv;
addrSrv.sin_addr.S_un.S_addr=inet_addr("127.0.0.1");
addrSrv.sin_family=AF_INET;
addrSrv.sin_port=htons(7000);
connect(sockClient,(SOCKADDR*)&addrSrv,sizeof(SOCKADDR));
char recvBuf[100];
recv(sockClient,recvBuf,100,0);
printf("%s\n",recvBuf);
send(sockClient,"This is zhangsan",strlen("This is zhangsan")+1,0);
closesocket(sockClient);
WSACleanup();
}
windows里常见的内存填充数据含义
* 0xABABABAB : Used by Microsoft's HeapAlloc() to mark "no man's land" guard bytes after allocated heap memory
漱 * 0xABADCAFE : A startup to this value to initialize all free memory to catch errant pointers
涵? * 0xBAADF00D : Used by Microsoft's LocalAlloc(LMEM_FIXED) to mark uninitialised allocated heap memory
很? * 0xBADCAB1E : Error Code returned to the Microsoft eVC debugger when connection is severed to the debugger
撅饰 * 0xBEEFCACE : Used by Microsoft .NET as a magic number in resource files
烫烫 * 0xCCCCCCCC : Used by Microsoft's C++ debugging runtime library to mark uninitialised stack memory
屯屯 * 0xCDCDCDCD : Used by Microsoft's C++ debugging runtime library to mark uninitialised heap memory
葺葺 * 0xDDDDDDDD : Used by Microsoft's free() or delete to mark freed heap memory
蕲蕲 * 0xDEADDEAD : A Microsoft Windows STOP Error code used when the user manually initiates the crash
* 0xFDFDFDFD : Used by Microsoft's C++ debugging heap to mark "no man's land" guard bytes before and after allocated heap memory
* 0xFEEEFEEE : Used by Microsoft's HeapFree() to mark freed heap memory