I have the following requirements which I am struggling to meet:

1)       Use UNIX domain sockets (named pipes) to communicate (they are on the same box)

2)       Have a single instance of both lighttpd and myApp running

3)       Have multiple simultaneous requests forwarded from Lighttpd at a time

I have a robust setup which uses TCP connections and works very well. This uses the FCGX API to allow myApp to receive multiple requests simultaneously. All I am trying to do is port this from using tcp connections to using named pipes. But I have as yet failed to make this work.

I have now reverted to a simple test app which I have included below along with my Lighttpd config snipet.

I have set the ownership of everything in a ten mile radius to ‘lighttpd’

I would be very grateful for any help or suggestions as to what might be going wrong.

Best Regards

Howard May

P.S. Konstantin, I have BCCed you explicitly as you had previously offered assistance in this area (back in 2009!)

fastcgi.server    = ( "/namedpipetest/" =>

                      (

                        (

                          "socket" => "/var/tmp/lighttpd/wsi-fastcgi.socket",

                          "check-local" => "disable"

                        )

                      )

                    )

#include <stdio.h>

#include "fcgiapp.h"

void main(int argc, char ** argv)

{

  int fd;

  int result;

  FCGX_Request req;

  printf("Fastcgi FIFO test app\n");

  result = FCGX_Init();

  if(result != 0)

  {

    printf("FCGX_Init returned %d\n", result);

    return;

   }

  fd = FCGX_OpenSocket("/var/tmp/lighttpd/wsi-fastcgi.socket", 16);

  if(fd == 0)

  {

    printf("FCGX_OpenSocket returned 0\n");

    return;

  }

  FCGX_InitRequest(&req, fd, 0);

  while((result = FCGX_Accept_r(&req))==0);

  {

    FCGX_FPrintF(req.out, "Content-type: text/html\r\n\r\n<TITLE>Whoop</TITLE>\n");

  }

  printf("FCGX_Accept_r returned %d\n", result);

  return;

}

I am using Lighttpd with a fastCGI client using libfcgi on Linux. If Lighttpd opens more than 1024 tcp connections it seems that libfcgi fails and I believe this is on account of using ‘select’ with the default FD_SETSIZE value of 1024.

My question is whether this is a known issue with a tried and tested work around.

Note: my application is required to support more than 1024 simultaneous HTTP requests.

Best regards

Howard May