Received: (qmail 76986 invoked by uid 501); 9 Oct 2001 21:58:12 -0000
Message-Id: <20011009215812.76985.qmail@apache.org>
Date: 9 Oct 2001 21:58:12 -0000
From: Shamim Mohamed <spmap@languid.org>
Reply-To: spmap@languid.org
To: submit@bugz.apache.org
Subject: ap_send_fd doesn't seem to send the file; no error reported
X-Send-Pr-Version: 3.110

>Number:         8498
>Category:       apache-api
>Synopsis:       ap_send_fd doesn't seem to send the file; no error reported
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    apache
>State:          closed
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   apache
>Arrival-Date:   Tue Oct 09 15:00:01 PDT 2001
>Closed-Date:    Thu Apr 04 20:56:12 PST 2002
>Last-Modified:  Thu Apr 04 20:56:12 PST 2002
>Originator:     spmap@languid.org
>Release:        2.0.16-beta
>Organization:
>Environment:
$   uname -a
Linux artemis.rubiconproject.com 2.4.3-20mdk #1 Sun Apr 15 23:03:10 CEST 2001 i686 unknown
$  gcc --version
2.96
>Description:
I'm porting a module from 1.3.20 that has a content handler. The sequence of ops is:

    /*
     * File exists?
     */
    if (stat(filename, &st) < 0)
        return ... ;

    /* Readable? */
    err = apr_file_open(&fp, filename, APR_READ, APR_OS_DEFAULT, r->pool);
    if (err != APR_SUCCESS) {
        ap_log_error(APLOG_MARK, APLOG_NOERRNO | APLOG_DEBUG, err, r->server,
                     "couldn't open file \"%s\"", filename);
        return ... ;
    }

    /* Get file type and size */
    filesize = st.st_size;
    filetype = slFileType(filename);

    /* Send HTTP header */
    r->content_type = filetype;
    ap_set_content_length(r, filesize);
    r->status = HTTP_OK;
    r->status_line = "200 OK";
    /*ap_send_http_header(r);*/
 
    /* Write the content */
    err = ap_send_fd(fp, r, 0, filesize, &sent);
    if (err != APR_SUCCESS || sent != filesize)
        ap_log_error(APLOG_MARK, APLOG_NOERRNO | APLOG_DEBUG, err, r->server,
                     "short write (%d/%d) for file \"%s\"",
                     sent, filesize, filename);

    apr_file_close(fp);

No errors are reported - I'm running httpd at LogLevel debug. But no data is
actually sent by ap_send_fd:

$ telnet localhost 6060
Trying 63.95.167.73...
Connected to localhost.localdomain
Escape character is '^]'.
GET /content?pid=4078&f=/some/long/path/foo.txt&vc=23&t=1002662916&ttl=3600&k=1&a=nbGw0cZtf90iHTO0tp6AJg HTTP/1.0
 
HTTP/1.1 200 OK
Date: Tue, 09 Oct 2001 21:29:12 GMT
Server: Apache/2.0.16 (Unix)
Content-Length: 68
Connection: close
Content-Type: text/plain; charset=ISO-8859-1
 
Connection closed by foreign host.

As you can see, Content-type and Content-length are set correctly, but no data.

The server was built with:

./configure  --prefix=/usr/local/apache2 --enable-so --with-mpm=threaded --disable-cgid

and it's running on port 6060 as a non-root user.
>How-To-Repeat:
I'm trying to trim down the DSO to reproduce the problem.
>Fix:
In the next few days I shall try to trace ap_send_fd() and try to figure out what's
going on.
>Release-Note:
>Audit-Trail:
State-Changed-From-To: open-feedback
State-Changed-By: slive
State-Changed-When: Wed Nov 14 12:53:34 PST 2001
State-Changed-Why:
[This is a standard response.]
This Apache problem report has not been updated recently.
Please reply to this message if you have any additional
information about this issue, or if you have answers to
any questions that have been posed to you.  If there are
no outstanding questions, please consider this a request
to try to reproduce the problem with the latest software
release, if one has been made since last contact.  If we
don't hear from you, this report will be closed.
If you have information to add, BE SURE to reply to this
message and include the apbugs@Apache.Org address so it
will be attached to the problem report!
State-Changed-From-To: feedback-closed
State-Changed-By: wrowe
State-Changed-When: Thu Apr  4 20:56:12 PST 2002
State-Changed-Why:
[This is a standard response.]
No response from submitter, assuming issue has been resolved.
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