[Question] redistribute modified mod_fastcgi.so

Hi,

We have some questions about mod_fastcgi.so.
It's following:

[Questions]
 - May I redistribute following modified library (mod_fastcgi.so)?
 - When we redistribute it, Do we need a contract, a license, a royalty etc?
 - What is the condition when we redistribute it?
   e.g. We must distribute an LICENSE.TERMS with a modified library.

[Revision contents]
* Aim:
  We are developing a Web server with a static mode of fastCGI,
 Running in a high load state by communication with plural clients, this system have a
following error.

 [Tue Jun 12 19:51:35 2007] [error] [client 192.168.1.1] (146)Connection refused: FastCGI:
failed to connect to server "/tss/cgi/bin/tss_ph10.fcgi": connect() failed
 [Tue Jun 12 19:51:35 2007] [error] [client 192.168.1.1] FastCGI: incomplete headers (0
bytes) received from server "/tss/cgi/bin/tss_ph10.fcgi"

 As a result of having analyzed fastCGI, we recognized an error of ECONNREFUSED in connect().
 This error's Countermeasures is described in
URL(http://www.fastcgi.com/archives/fastcgi-developers/2002-August/002194.html).
 However, we cannot apply this countermeasures. Because we must use Unix socket.

 When this web server has this error, we want to modify it, fastCGI retry connect().

  Target version : mod_fastcgi v2.4.2

------- Output result of diff command : Start ------------------------------------------------

1070a1071
> >       int connect_retry = 0;  /* connect retry count on ECONNREFUSED */
1343a1345
> > RetryConnection:      /* retry from socket creation rather than just connect() */
1382a1385,1411
> > /*
> >  * ECONNREFUSED returned by connect() means the server is not listening or the
> >  * listen queue is full.  In case of the latter another attempt to connect may
> >  * succeed.
> >  */
> > #define TSA_RETRY_MAX_COUNT 100       /* max retry count */
> > #define TSA_RETRY_INTERVAL 10 /* retry interval (10 ms) */
> >       if (errno == ECONNREFUSED && connect_retry < TSA_RETRY_MAX_COUNT) {
> >               struct timespec ts;
> >
> >               /* close socket in order to retry from socket creation */
> >               close(fr->fd);
> >               fr->fd = -1;
> >
> >               ap_log_rerror(FCGI_LOG_ERR, r,
> >                       "FastCGI: failed to connect to server \"%s\": "
> >                       "connect() failed -- retrying from socket creation.",
> >                       fr->fs_path);
> >
> >               ts.tv_sec = 0;
> >               ts.tv_nsec = TSA_RETRY_INTERVAL * 1000000;
> >               nanosleep(&ts, NULL);
> >
> >               connect_retry++;
> >               goto RetryConnection;
> >       }


------- Output result of diff command : End -----------------------------------------------


Best regards,

Satoru kanno

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