Re: Is http server and http client possbile?

Yes, it is!
Server and client don't use the same socket but be sure the MAX_TCP_SOCKET_BUFFERS define is enought.

In addition keep in mind that httpc_skip_headers() and httpc_read_body() functions can take a while to complete their task due to network delays (especially if you use a slow connection like GPRS but I don't know if it is your context). So during that tasks you should yield to other costates. So try to write your own (co)function based on these ones. You can take a look to the http_client.lib source code. Here an example:

[...]
// fill buf with data to post
// blah, blah, blah
// s is a pointer to httpc_Socket structure passed as parameter to my confunction
rc = ((sock_write(s->sock, buf, i) != -1) && (sock_write(s->sock, (byte *)&ev, sizeof(ev)) != -1)) ? 0 : -EIO;
if (!rc)  {
   // waiting for a response from the server
   tm = SEC_TIMER + 5L; // wait max 5 seconds
   while ((s->state == HTTPC_STATE_HEADER) && (rc >= 0) && (tm > SEC_TIMER)) {
     // I'm not really interested in headers, I'm just waiting for the body part of the response
     rc = httpc_read_header(s, NULL, 0, 0);
     yield;
   }
   i = 0;
   while ((s->state == HTTPC_STATE_BODY) && (rc >= 0) && (i < sizeof(buf)) && (tm > SEC_TIMER)) {
      rc = httpc_read_body(s, buf + i, sizeof(buf) - i);
      if (rc > 0) {
         i += rc;
         // received a chunk of data from the server
      }
      yield;
   }
}
[...]


In my application (a datalogger connected to internet via GPRS) I wrote my cofunction and it works. I hope this is clear enought and that it can helps you.

Marco


--- In [email protected], "racqueldesign" <embeddedsupplies@...> wrote:
>
> Hi,
> 
> I have a HTTP server running and the cgi is working fine.
> I added http client and now the cgi is taking about 10 seconds to respond.
> 
> I think the cgi keeps the response to any HTTP REQUEST until the http client task is complete.  My question is, how do I get the cgi to send the response(infomation in its buffer) immediately?  I added a yield statement hoping to give control back to the http_handler but that didn't work.  I am not sure why my cgi won't send response right-away. Do you guys have any advice?
> 
> 
> while (1) {			
>   
>   costate {
>       http_handler();
>   }			
> 			
>   costate {
>     yield;  //GIVE CONTROL BACK TO http_handler(), cgi 
> 			
>     retval = httpc_init (&hsock, sock);
>     if (retval)
>     {
>        printf ("error %d calling httpc_init()\n", retval);
>     }
> 			
>     retval = httpc_post( &hsock, DEST, 80, FILENAME, NULL, PostUpdate_Msg);
>     if(retval){
> 	printf ("error %d calling httpc_post()\n", retval);
>     }
> 			
> 
>     //Skip Header reading and only read body
>     httpc_skip_headers(&hsock);   //skip header reading
>     do
>     {
> 	 retval = httpc_read_body( &hsock, PostResponse_msg, 128);
>     } while(hsock.state == HTTPC_STATE_BODY);
> 
>     httpc_close(&hsock);
>   }
> }
>