socket programming
Iam facing one problem in my socket programming on a server based program.Everything thing seems to be fine i meant my server & client are getting connected but on the client side i cannot see the values which i am sending .
Code:
// WAS_Server.cpp : Defines the entry point for the console application.
//
#include "stdafx.h"
#include "WAS_Server.h"
#include "winsock2.h"
#include "conio.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
/////////////////////////////////////////////////////////////////////////////
// The one and only application object
CWinApp theApp;
using namespace std;
UINT ClientThread(LPVOID pParam);
UINT MTServerThread(LPVOID pParam);
//BOOL Recfile(SOCKET,CString);
//BOOL FileSearch(SOCKET,CString,CString);
HANDLE hmtx1 ;
//BOOL ParseCmd(char* str,CString& cmd,CString& params);
int _tmain(int argc, TCHAR* argv[], TCHAR* envp[])
{/*
unsigned char type=1011;
unsigned char nom=001;
unsigned char off=0;
unsigned char first;
nom=nom<<4;
off=off<<7;
first=type|nom|off;
printf("%d",first);*/
int nRetCode = 0;
hmtx1 = CreateMutex(NULL,NULL,NULL) ;
cout<<"Press Esc to terminate the program\r\n";
SOCKET server;
AfxBeginThread(MTServerThread,(LPVOID)server);
while(_getch()!=27);
closesocket(server);
WSACleanup();
return nRetCode;
}
UINT MTServerThread(LPVOID pParam)
{
SOCKET server=(SOCKET)pParam;
sockaddr_in local;
WSADATA wsadata ;
int wsaret = WSAStartup(0x101,&wsadata) ;
if(wsaret!=0)
return 0;
local.sin_family=AF_INET;
local.sin_addr.s_addr=INADDR_ANY;
local.sin_port=htons((u_short)15002);
server=socket(AF_INET,SOCK_STREAM,0);
if(server==INVALID_SOCKET)
{
return 0;
}
if(bind(server,(sockaddr*)&local,sizeof(local))!=0)
{
return 0;
}
if(listen(server,10)!=0)
{
int gle = WSAGetLastError();
printf("listening failure:%d\n", gle);
getch();
return 0;
}
SOCKET client;
sockaddr_in from;
int fromlen=sizeof(from);
printf("Server started\n");
while(1)
{
client=accept(server,(struct sockaddr*)&from,&fromlen);
AfxBeginThread(ClientThread,(LPVOID)client);
}
return 0;
}
UINT ClientThread(LPVOID pParam)
{
char buff[10]={0x1b,0x81,0x00,0x80,0x00,0x80,0x40,0x00,0x00,0x1};
char buffr[1024];
CString cmd;
int sb;
int gle;
CString params;
int n;
BOOL auth=false;
CString npath;
//memset(buff,0,10) ;
//unsigned char *val;
//val = buff;
SOCKET client=(SOCKET)pParam;
//strcpy(buff,"c");
if(sb = send(client,buff,strlen(buff),0)> 0);
{
gle = WSAGetLastError();
printf("sent:%dbytes\nle = %d\n", sb, gle);}
while(1)
{
char *recb = (char*)malloc(1024);
memset(recb, 0, 1024);
n=recv(client,buffr,1024,0) ;
gle = WSAGetLastError();
if(n==SOCKET_ERROR)
{printf("\nsocket error");
break;}
else
{
buffr[n]=0;
printf("received from client:%dbytes, %d\n", n, gle);
sprintf(recb, "%x", buffr);
printf(recb);
free(recb);
break;
}
}
closesocket(client);
return 0 ;
}
In the output iam getting
Code:
press Esc to terminate
Server started
sent ": 1bytes
le =0
received from client : 0 bytes ,0
f8fa84
It seems only first byte is getting transferred but when i am getting disconnected with my client iam getting f8fa84. Well dont understand this value means .Kindly give some solution |
