Error in connect() in TCP client code

This is a discussion on Error in connect() in TCP client code within the C++ Programming forums, part of the General Programming Boards category; Hi, i have written a tcp client code to connect and send a message to the server. It stops after ...

  1. #1
    Registered User
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    Feb 2011
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    3

    Error in connect() in TCP client code

    Hi, i have written a tcp client code to connect and send a message to the server.
    It stops after gives "Connecting Error", so I am not able to send the message to server.
    Please help me.
    Code:
    #include <iostream>
    
    #include <sys/types.h>
    #include <sys/socket.h>
    #include <arpa/inet.h>
    
    #include <netinet/in.h>
    #include<time.h>
    #include<stdlib.h>
    
    
    using namespace std;
    int main()
    {
    	int socket_desc;
    	struct sockaddr_in address;
    
    	socket_desc=socket(AF_INET,SOCK_STREAM,0);
    
    	if (socket_desc==-1)
    	{
    	cout<<"Create socket"<<endl;
    	exit(1);
    	}
    	else
    	cout<<"Socket created successfully and socket file descripter is : "<<socket_desc;
    	cout<<endl;
    
    
     	address.sin_family 	
    	//address.sin_addr.s_addr=INADDR_ANY; 
    	address.sin_addr.s_addr = inet_addr("127.0.0.1");
    
    	address.sin_port = htons(8051);
    	if(connect(socket_desc,(struct sockaddr *)&address,sizeof(address))==-1)
    		{cout<<"connecting Error"<<endl;
    		exit(1);}
    	else
    	cout<<"connection done"<<endl;
    
    	const char *message="Thank you\n\r";
    	send(socket_desc,message,sizeof(message),0);
    
    	if (send(socket_desc,message,sizeof(message),0)!=sizeof(message))
      	{
    		cout<<"send error"<<endl;
    		exit(1);
    	}
    	else
    	{cout<<"Message sent successfully"<<endl;}
    	
    	cout<<"done";
    	
    
    
    
    	close(socket_desc);
    	return 0;
    }
    Thanks in advance.

  2. #2
    and the hat of int overfl Salem's Avatar
    Join Date
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    Add these includes
    #include <string.h>
    #include <errno.h>

    And modify your error code
    Code:
    	if(connect(socket_desc,(struct sockaddr *)&address,sizeof(address))==-1)
    		{
    		char *msg = strerror(errno);
    		cout<<"connecting Error: Reason="<< msg <<endl;
    		exit(1);}
    Your indent style is hard to read.
    SourceForge.net: Indentation - cpwiki
    If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
    If at first you don't succeed, try writing your phone number on the exam paper.
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  3. #3
    Registered User ~Kyo~'s Avatar
    Join Date
    Jun 2004
    Posts
    320
    The Winsock API seems to be good to work with as well... But I take it you want it portable to *nix or something since your not using that?

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