LINUXSOCKET programming connecterror! : Socketoperationonnon-socket

LINUXSOCKET programming connecterror! : Socketoperationonnon-socket -- Linux general technology-Linux programming and kernel information. The following is a detailed description. // Server-side program
# Include
# Include
# Include
# Include
# Include
# Include
# Define SERVPORT 3333
# Define BACKLOG 10
Typedef struct sockaddr_in st;
Typedef struct sockaddr sd;
Int main ()
{
Int sockfd, clientfd;
St my_adder;
St client_adder;
Int sin_size;
If (sockfd = socket (AF_INET, SOCK_STREAM, 0) =-1)
{Perror ("socket default! ");
Exit (1 );
}
Printf ("% d", sockfd );
My_adder.sin_family = AF_INET;
My_adder.sin_port = htons (SERVPORT );
My_adder.sin_addr.s_addr = INADDR_ANY;
Bzero (& (my_adder.sin_zero), 8 );

If (bind (sockfd, (sd *) & my_adder, sizeof (sd) =-1)
{Perror ("bind error! ");
Exit (1 );
}
If (listen (sockfd, BACKLOG) =-1 ){
Perror ("linsten error ");
Exit (1 );
}
While (1 ){
Sin_size = sizeof (st );
If (clientfd = accept (sockfd, (sd *) & client_adder, & sin_size) =-1 ){
Perror ("accept error! ");
Continue;
}
Printf ("accept a meg from: % s \ n", inet_ntoa (client_adder.sin_addr ));
If (! Fork ()){
If (send (clientfd, "connect \ n", 26, 0) =-1)
Perror ("send error! ");
Close (clientfd );
Exit (0 );
}
Close (clientfd );
}
}
// Client program
# Include
# Include
# Include
# Include
# Include
# Include
# Include
Typedef struct sockaddr_in st;
Typedef struct sockaddr sd;
# Define SERVPORT 3333
# Define maxdatasalize 100
Int main (int argc, char * argv [])
{
Int sockfd, recvbytes;
Char buf [MAXDATASIZE];
Struct hostent * host;
St servaddr;
If (argc <2 ){
Fprintf (stdin, "please enter the sercer's hostname! \ N ");
Exit (1 );
}
If (host = gethostbyname (argv [1]) = NULL ){
Perror ("gethostbyname error! ");
Exit (1 );
}
If (sockfd = socket (AF_INET, SOCK_STREAM, 0) =-1 ){
Perror ("socket creat error! ");
Exit (1 );
}
Servaddr. sin_family = AF_INET;
Servaddr. sin_port = htons (SERVPORT );
Servaddr. sin_addr = * (struct in_addr *) host-> h_addr );
// Inet_ton (AF_INET, "127.0.0.3", & servaddr. sin_addr );
Bzero (& (servaddr. sin_zero), 8 );
If (connect (sockfd, (sd *) & servaddr, sizeof (sd) =-1 ){
Perror ("connect error! ");
Exit (1 );
}
If (recvbytes = recv (sockfd, buf, MAXDATASIZE, 0) =-1 ){
Perror ("receve error! ");
Exit (1 );
}
Buf [recvbytes] = '\ 0 ';
Printf ("receve: % s", buf );
Close (sockfd );
}