Socket programming using c++ (Connection Establishment)

1.simple Java client server Connection tutorial based on Screenshot [ part 1 ] 2.Java client server Connection tutorial based on Screenshot [ part 2 ] , sending message from client to server 3. Socket programming using c++ (Connection Establishment) 4.Socket programming using java ,Netbeans

Server Code
------------------------------------------------------------------------------

       
#include

#include

#include //inet_addr

//#include    //write

int main(int argc , char *argv[])
{
    int socket_desc , client_sock , c;
    struct sockaddr_in server_addr , client;
     //Create socket
    socket_desc = socket(AF_INET , SOCK_STREAM , 0);
    if (socket_desc == -1)
    {
        printf("Could not create socket");
    }
    puts("Socket created");
    //Prepare the socket address_in structure
    server_addr.sin_family = AF_INET;
    server_addr.sin_addr.s_addr = INADDR_ANY;
    server_addr.sin_port = htons( 9999 );
    //Bind
    if( bind(socket_desc,(struct sockaddr *)&server_addr , sizeof(server_addr)) < 0)
    {
        //print the error message
        perror("bind failed. Error");
        return 1;
    }
   puts("bind done");
    //Listen
    listen(socket_desc , 3);
    //Accept and incoming connection
    puts("Waiting for incoming connections...");
    c = sizeof(struct sockaddr_in);
    //accept connection from an incoming client
    client_sock = accept(socket_desc, (struct sockaddr *)&client, (socklen_t*)&c);
    if (client_sock < 0)
    {
        perror("accept failed");
        return 1;
    }
    puts("Connection accepted");
return 0;
}

      
 

**************************************************************************
Client Code
-------------------------------------------------------

       
#include    //printf,scanf
#include    //socket
#include //inet_addr
int main(int argc , char *argv[])
{
    int sock;
    struct sockaddr_in server_addr;
    //Create socket
    sock = socket(AF_INET , SOCK_STREAM , 0);
    if (sock == -1)
    {
        printf("Could not create socket");
    }
    puts("Socket created");
    server_addr.sin_addr.s_addr = inet_addr("127.0.0.1");
    server_addr.sin_family = AF_INET;
    server_addr.sin_port = htons( 9999 );
    //Connect to remote server
    if (connect(sock , (struct sockaddr *)&server_addr , sizeof(server_addr)) < 0)
    {
        perror("connect failed. Error");
        return 1;
    }
    puts("Connected\n");
return 0;
}
      
 

***************************************************************************
OUTPUT
------------------------
Open two terminal
First terminal
-------------------------

       

 gcc  server3.c && ./a.out

      
 

Second terminal
---------------------------------------

       

 gcc  client3.c && ./a.out

      
 

Posted in: SOCKET PROGRAMMING