代理服务器代理端向服务端recv()之后总出现的10054错误

[我杰尼龟怕你不成]

代理端：
#include "StdAfx.h"
#include "ProxyS.h"
#include <process.h>
#include <winsock2.h>
#pragma comment(lib,"ws2_32.lib")

CProxyS* pThis=NULL;

CProxyS::CProxyS(void)
{
   WSADATA wasData;
   WSAStartup(MAKEWORD(2,2),&wasData);
   this->m_pWndView = NULL;
   this->socketManager=SOCKET_ERROR;
   pThis=this;
}

CProxyS::~CProxyS(void)
{
   WSACleanup();
}


VOID CProxyS::OnPostNotif(TCHAR* szNotif)
{
	//通知些显示消息
	if(this->m_pWndView != NULL)
	{
		this->m_pWndView->SendMessage(NOTIF_MSG_SHOW, (WPARAM)szNotif);
	}
}



BOOL CProxyS::OnStartServerListen(UINT nPort)   //启动服务器线程
{  

   HANDLE hServer = (HANDLE)_beginthreadex(	NULL,       
						                    NULL, 
						                    this->ServerListenProc,
						                    (LPVOID)nPort, 
						                    NULL, 
						                    NULL
					                        );
    if(NULL==hServer)
   {  
      return FALSE;
    }
    return TRUE;
}


unsigned WINAPI CProxyS::ServerListenProc(LPVOID lpVoid)     
{
    SOCKET ProxyServer=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
    if(SOCKET_ERROR==ProxyServer)
   {
       pThis->OnPostNotif(_T("Server socket init error！"));
       return 1;
    }
 
	struct sockaddr_in srvaddr;
    srvaddr.sin_family=AF_INET;
    srvaddr.sin_port=htons((UINT)lpVoid);
    srvaddr.sin_addr.S_un.S_addr=INADDR_ANY;
	if(bind(ProxyServer,(LPSOCKADDR)&srvaddr,sizeof(SOCKADDR))==SOCKET_ERROR)
	{
		pThis->OnPostNotif(_T("Server socket bind error！"));
		return 1;
	}
	if(listen(ProxyServer,DEFLISNUM)==SOCKET_ERROR)
	{
		pThis->OnPostNotif(_T("Server socket listen error!"));
		return 1;
	}
	pThis->OnPostNotif(_T("监听成功"));
	sockaddr_in addrRemote;
	int len=sizeof(sockaddr);
    while(1)
	{
		SOCKET acceptSocket=accept(ProxyServer,(sockaddr*)&addrRemote,&len);
        if(SOCKET_ERROR==acceptSocket)
        {
			break;
	     }
        CHAR *sIP=inet_ntoa(addrRemote.sin_addr);  //得到客户端IP
        pThis->OnPostNotif(_T("收到一个IE连接，IP："));
        pThis->ServerReceive(acceptSocket);
	}
    return 0;
}

VOID CProxyS::ServerReceive(SOCKET ServerSocket)
{
	char bufferdata[MAXBUFSIZE];
	memset(bufferdata,0,MAXBUFSIZE);
	//接收客户端发来的请求
	int nRecvLen = recv(ServerSocket,bufferdata,MAXBUFSIZE, 0);
	if(nRecvLen==0)
	{
		closesocket(ServerSocket);
		return;
	}
	// 向WebServer提交请求
    SOCKADDR_IN   saServer;   
    SOCKET        hsocket;
    int   nRet;   
    hsocket = socket(AF_INET,SOCK_STREAM,0); 
    if(hsocket==INVALID_SOCKET)
    {
       //printf("Failed socket(),error code:%d\n",WSAGetLastError());
        return;      
    }
    saServer.sin_family = AF_INET;   
    saServer.sin_port = htons(8080);   
	saServer.sin_addr.S_un.S_addr=inet_addr(bufferdata);//= *((LPIN_ADDR)*lphostent->h_addr_list); 
    CHAR *wIP=inet_ntoa(saServer.sin_addr);  
    nRet = connect(hsocket,(LPSOCKADDR)&saServer,sizeof(SOCKADDR_IN));
    if(nRet==SOCKET_ERROR)   
    {   
        closesocket(hsocket);   
        return;   
    } 
    //  向webserver转发IE请求 
    nRet = TCPsend(hsocket,bufferdata,strlen(bufferdata),0);
    char  dest[MAXBUFSIZE];
	memset(dest,0,MAXBUFSIZE);
	nRet=TCPrecv(hsocket,dest,MAXBUFSIZE,0);  //断点测试出错，总返回1
	int e=WSAGetLastError();    //e=10053
    nRet=1; 
    int senlen=0;
    while(nRet>0) 
    {   
        memset(dest,0,1000);
        nRet=recv(hsocket,dest,sizeof(dest)-1,0); // 从webserver获取数据   
		if(nRet==0)
        {
            break;
        }
        else  if(nRet==SOCKET_ERROR )
        {       
            break;
        }
        dest[nRet]='\0';
        //将数据转发给客户端
        senlen = TCPsend(ServerSocket,dest,nRet,0);  
        if(senlen==0)
        {
            sockaddr_in sin;
            int len = sizeof(sin);
            if(getpeername(ServerSocket,(sockaddr*)&sin,&len)== SOCKET_ERROR)
            {
                //break;
            }
           // break;
        }
        else if(senlen==SOCKET_ERROR)
        {      
           //break;
        }
    }   
    closesocket(ServerSocket);
    closesocket(hsocket); 
}

int CProxyS::TCPsend(SOCKET s,const char*buf,int len,int flags)
{
    int n=0,sendCount=0;
    int length =len;
    if(buf==NULL)
        return 0;
    while(length>0)
    {
        n=send(s,buf+sendCount,length,flags); //发送数据，
        if(n==SOCKET_ERROR)//网络出现异常
        {
            break;       
        }
        length-=n;
        sendCount+=n; 
    }
    return sendCount; // 返回已发送的字节数
}
 
int CProxyS::TCPrecv(SOCKET s,char *buf,int len,int flags)
{   
    int nRev=0,recvCount=0;
    int length =len;
    if(buf==NULL)
        return 0;
    // 循环接收数据
    while(length>0)
    {
        nRev =recv(s,buf+recvCount,length,flags);
        if(nRev==SOCKET_ERROR)//网络出现异常
        {
            printf("Failed recv(),error code:%d\n",WSAGetLastError());
            break;
        }
        length-=nRev;
        recvCount+=nRev;
    }
 
    return recvCount; //返回接收到的字节数
}

[我杰尼龟怕你不成]

客户端： #include "StdAfx.h" #include "ProxyC.h" #include <process.h> #include <winsock2.h> #include <afx.h> #pragma comment(lib,"ws2_32.lib") CProxyC* pThis=NULL; CProxyC::CProxyC(void) { WSADATA wasData; WSAStartup(MAKEWORD(2,2),&wasData); this->m_pWndView=NULL; this->socketManager=SOCKET_ERROR; pThis=this; } CProxyC::~CProxyC(void) { WSACleanup(); } VOID CProxyC::OnPostNotif(TCHAR* opNotif) { if(this->m_pWndView!=NULL) { this->m_pWndView->SendMessage(NOTIF_MSG_SHOW,(WPARAM)opNotif); } } BOOL CProxyC::OnStartClientListen(UINT nPort) { HANDLE hServer = (HANDLE)_beginthreadex( NULL, NULL, this->ClientListenProc, (LPVOID)nPort, NULL, NULL ); if(NULL == hServer) { return FALSE; } return TRUE; } unsigned WINAPI CProxyC::ClientListenProc(LPVOID lpVoid) { pThis->socketManager=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP); if(SOCKET_ERROR==pThis->socketManager) { pThis->OnPostNotif(_T("连接失败！")); return 1; } struct sockaddr_in srvaddr; srvaddr.sin_family=AF_INET; srvaddr.sin_port=htons((UINT)lpVoid); srvaddr.sin_addr.S_un.S_addr=inet_addr("127.0.0.1");//本地回路地址 int nSrvaddrlen= sizeof(srvaddr); int i=connect(pThis->socketManager,(struct sockaddr*)&srvaddr,nSrvaddrlen); if( i == SOCKET_ERROR) { pThis->OnPostNotif(_T("Client socket connect error!")); closesocket(pThis->socketManager); } pThis->OnPostNotif(_T("Client socket connect OK!")); char bufSend[MAXBUFSIZE]; char bufRecv[MAXBUFSIZE]; int nsendlen; memset(bufSend,0,MAXBUFSIZE); memset(bufRecv,0,MAXBUFSIZE); strcpy_s(bufSend,MAXBUFSIZE,inet_ntoa(srvaddr.sin_addr)); nsendlen=send(pThis->socketManager,bufSend,strlen(bufSend),0); if(0>=nsendlen) { return 1; } //r=recv(ServerProxy,bufRecv,MAXBUFSIZE,0); return 0; }

[Yofoo]

10054 一般是socket被关闭了 看不出什么东西, 具体的去调试

[jianghandaxue]

常见的原因是：服务器的并发连接数超过了其承载量，服务器会将其中一些连接Down掉