Need an example of client socket sending data

Hi neeta,

#include <stdio.h>
#include <winsock.h>
#include <string.h>
#include <stdlib.h>
#include<windows.h>

#define SERVERPORT 5555
#define CLIENTPORT 5554

int SockId=0;
static int iCount=0;


int InitialiseClient(void)
{
    int error;
      SOCKADDR_IN SockData;
      SOCKADDR_IN SockSock;
    int sockid;
    WORD wVersionRequested;
      WSADATA wsaData;
    wVersionRequested = MAKEWORD( 2, 0 );
    error = WSAStartup( wVersionRequested, &wsaData );
        if ( error != 0 ) {exit(0);}
      
      SockData.sin_family = AF_INET;
      SockData.sin_port = htons( CLIENTPORT );
    SockData.sin_addr.s_addr=htonl(INADDR_ANY);

      sockid = socket ( AF_INET , SOCK_DGRAM ,0);
      
      if ( sockid == -1 )
      {
          printf ( "\n Socket Failed %d\n",WSAGetLastError() );
            exit ( 1 );
      }
      error = bind ( sockid , (struct sockaddr *)&SockData , (int ) sizeof ( SockData ) );
      if ( error )
      {
          printf ( "\n  Bind Failed %d \n" ,WSAGetLastError());
            closesocket( sockid );
          exit(1);
      }

      SockSock.sin_family = AF_INET;
      /*Connect to server at IP:192.168.174.32 on port SERVER_PORT*/
      SockSock.sin_port = htons(SERVER_PORT );
    SockSock.sin_addr.s_addr=inet_addr("192.168.174.32");
      
      int iState=connect ( sockid,(sockaddr FAR*)&SockSock,sizeof(SockSock));    
      printf("State of connection =%d ",iState);fflush(stdout);
      return sockid;
}



void main(void )
{
    char command[256];
    char header[2],result[256];
      int iCount=1;
      SockId=InitialiseClient();

    header[0]=1;
      command[0]=iCount;
      header[1]=(char)1;
      header[2]=0;

    strcpy(&command[1],"KILL PROCESS");                  
      
      if(send(SockId,header,1,0)!=1)
      {
      printf("Serious Problem header");
      }
      printf(" Problem header=%s data=%d",header,strlen(header));


      int Data=recv(SockId,result,1,0);
      
      if(Data!=1)
            {
          printf("Recv :Len=%d LineLen=%d Error=%d",Data,2,WSAGetLastError());
          exit(1);
            }




This code connects to a UDP server listening on port SERVER_PORT.
You may need to code the server portion also.


Regards,
ufolk123

Thanks you all for your replay
My problem is how to get the server ip
by his name.

i need to establish the connection
with the server with out knowing his
ip.
only with knowing his HOSTNAME
How should i change the example ufolk123
send ?

Best regards
Neta !!!

Thanks you all for your replay
My problem is how to get the server ip
by his name.

i need to establish the connection
with the server with out knowing his
ip.
only with knowing his HOSTNAME
How should i change the example ufolk123
send ?

Best regards
Neta !!!

Use the gethostbyname function.