How do I add a proxy to tcpclient code? Thank you.

How do I add a proxy to tcpclient code? Thank you-general Linux technology-Linux programming and kernel information. For more information, see the following. First write a tcp socket C/S program
Now I want to write a program command line to give the network address to get the webpage content, but to access the specified Webpage Through the proxy, the webpage content is also returned by the proxy


How should I add code?

Below is the tcp client code
# Include
# Include
# Include
# Include
# Include
# Include
# Include
# Include
# Include
# Include

# Define SERVERPORT 8888
# Define maxbuckets 1024

Int main (int argc, char * argv [])
{
Int sockd;
Int counter;
Int fd;
Struct sockaddr_in xferServer;
Char buf [MAXBUF];
Int returnStatus;

If (argc <3)
{
Fprintf (stderr, "Usage: % s [Dest filename] \ n ",
Argv [0]);
Exit (1 );
}
/* Create a socket */
Sockd = socket (AF_INET, SOCK_STREAM, 0 );
If (sockd =-1)
{
Fprintf (stderr, "cocould not create socket! \ N ");
Exit (1 );
}
/* Set up the server information */
XferServer. sin_family = AF_INET;
XferServer. sin_addr.s_addr = inet_addr (argv [1]);
XferServer. sin_port = htons (SERVERPORT );
/* Connect to the server */
ReturnStatus = connect (sockd,
(Struct sockaddr *) & xferServer,
Sizeof (xferServer ));
If (returnStatus =-1)
{
Fprintf (stderr, "cocould not connect to server! \ N ");
Exit (1 );
}

/* Send the name of the file we want to the server */
ReturnStatus = write (sockd, argv [2], strlen (argv [2]) + 1 );
If (returnStatus =-1)
{
Fprintf (stderr, "cocould not send filename to server! \ N ");
Exit (1 );
}

/* Call shutdown to set our socket to read-only */
Shutdown (sockd, SHUT_WR );

/* Open up a handle to our destination file to receive the contents */
/* From the server */
Fd = open (argv [3], O_WRONLY | O_CREAT | O_APPEND );
If (fd =-1)
{
Fprintf (stderr, "cocould not open destination file, using stdout. \ n ");
Fd = 1;
}

/* Read the file from the socket as long as there is data */
Int I = 0;
While (counter = read (sockd, buf, MAXBUF)> 0)
{
/* Send the contents to stdout */
Fprintf (stdout, "write for the % d time \ n", ++ I );
Write (fd, buf, counter );
}
If (counter =-1)
{
Fprintf (stderr, "cocould not read file from socket! \ N ");
Exit (1 );
}
Close (sockd );
Return 0;
}

Please help. Thank you.