#include <iostream.h>
#include <stdio.h>
#include <unistd.h>
#include <strings.h>

/* constants */
const int MSGLEN = 256;    /* query length */
const int maxLen = 65536;   /* content length  (web page length) */
const int HTTPDPORT = 80;  /* default httpd port */

/* function prototypes */
int socketClient(char *,int);
void requestPage(int,char *);

int main(int argc, char *argv[])
{
   int s;                   /* socket descriptors               */
   char *myname;            /* pointer to name of this program  */
   char *host;              /* pointer to remote host name      */
   int  port;               /* port number                      */
   int  id;                 /* host id                          */
   char *fname;             /* file name                        */
   char *content;
   int len, totalLen = 0;

   content = new char[maxLen];

   myname = argv[0];

   /* it should be in the form <html-read site> or <html-read site file> */
   switch (argc)
   {
     case  2 : host = argv[1];
	       fname = new char[MSGLEN];
               strcpy(fname,"index.html");
	       break;
     case  3 : host = argv[1];
	       fname = argv[2];
               break;
   default   :cerr << " Usage: " << myname << 
                      " site (e.g. www.cs.panam.edu)\n";
              cerr << " or " << myname << 
	              " site file (e.g. www.cs.panam.edu /index.html)\n";
              exit(1);

   }
   
   s = socketClient(host,HTTPDPORT);
   requestPage(s,fname);
   while ((len = read(s, &(content[totalLen]), maxLen)) > 0)
       totalLen += len;
   content[totalLen] = 0;
   printf("%s\n",content);
   close(s);
}

void requestPage(int s, char *fname)
{
   char buf[BUFSIZ + 1];    /* buffer to read the page    */
   int len;                 /* length of received data    */


   strcpy(buf,"GET /");     /* the protocol specifies that the command */
			    /* should be GET /file HTTP/version\n\n    */

   strcat(buf,fname);
   strcat(buf," HTTP/1.0\n\n");


/* the following request gets the main search page */
/*   strcpy(buf,"POST /search HTTP/1.0\nHost: www.excite.com\nFrom: meng@panam.edu\nContent-Type: text/plain\nContent-Length: 0\n\n\n");
*/


/* the following request gets the main search page */
/*
   strcpy(buf,"GET /search HTTP/1.0\nHost: www.excite.com\nAccept: text/*\nFrom: meng@panam.edu\n\n");
*/

/* the following will get nothing from excite.com which is netscape server, */
/* it will get the appropriate information from an apache server */
/*
   strcpy(buf,"OPTIONS /search HTTP/1.1\nHost: www.excite.com\n\n");
*/

/* gets relocation */
/*
   strcpy(buf,"GET /redir.dcg HTTP/1.0\nHost: search.excite.com\nAccept: text/*\nFrom: meng@panam.edu\n\n");
*/

/* often gets "Request-URI Too Long"!! */
/*
   strcpy(buf,"GET / HTTP/1.0\nHost: search.excite.com\nAccept: text/*\nFrom: meng@panam.edu\n\n");
*/
       
/* often gets "Request-URI Too Long"!! */
/*
   strcpy(buf,"HEAD / HTTP/1.0\n\n");
*/
   len = strlen(buf);
   if (write(s,buf, len) != len)
   {
       perror("write");
       exit(1);
   }
} // end requestPage