[c-prog] socket() error ??

[Ahmed Shabana]

THIS CODE through a segmentation fault at PC= 0x80485e9 "from GDB"
and I donot know why ?? can any one help ?



#include<stdio.h>
#include<unistd.h>
#include<sys/socket.h>
#include<stdlib.h>
#include<netdb.h>
#include<string.h>

#define execption_handler(msg)  \
        do { perror(msg) ;} while(0)

void client_side_work(int sfd)
{
        // This is just a get_handler function
//      fdopen(sfd,"r+");
        //char* message[100]; //This just for testing if sprintf() use malloc() 
or not
        char* message;
        sprintf(message,"GET /index.html\n");

        write(sfd,message,sizeof(message));
        
                int nread;char buffer[1000];
                nread = read(sfd,buffer,sizeof(buffer));
        if (nread == 0)
                return ;

        if (!close(sfd) )
                execption_handler("close()");

}

int main()
{
        int sfd;
        struct addrinfo myAddrInfo,*serverAddr;
        myAddrInfo.ai_family = AF_UNSPEC;
        myAddrInfo.ai_socktype = SOCK_STREAM ;
        // myAddrInfo.ai_addr !! struct sockaddr
        

        if (getaddrinfo("localhost","80",&myAddrInfo,&serverAddr))
                execption_handler("getaddrinfo()");

        if ( (sfd = socket(serverAddr->ai_family, serverAddr->ai_socktype,
serverAddr->ai_protocol)) == -1 )
                execption_handler("socket()");
        if ( connect(sfd,serverAddr->ai_addr ,serverAddr->ai_addrlen) == -1 )
                execption_handler("connect()");
        client_side_work(sfd);
        
        return 0;
}