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I found the problem. It was a typo on my part in the configuration
file (added as I was trying different things to work out why it was
seg-faulting earlier).<br>
<br>
To find it I just loaded on an earlier version of Chrome with
"better" error messages and recognised it as something I'd seen
before.<br>
<br>
Regards,<br>
<br>
Peter<br>
<br>
<div class="moz-cite-prefix">On 30/05/13 19:08, Peter Dunkley wrote:<br>
</div>
<blockquote
cite="mid:5135CAF5-9696-4A71-9BCE-89028153EF35@crocodile-rcs.com"
type="cite">
<meta http-equiv="content-type" content="text/html;
charset=ISO-8859-1">
<div>The reserved bits are part of the WebSocket header that gets
put before the actual data.</div>
<div><br>
</div>
<div>Looking in Wireshark those bits are (correctly) all 0. But it
is not unusual for Chrome to present an error message that is
completely inaccurate and it is probably something else in the
header that is the problem.</div>
<div><br>
</div>
<div>Tomorrow morning I plan to roll-back the build and I should
be able to produce two traces that are almost identical (as far
as the payload goes) - one for each version. At that point I
will be able to do a proper bit-level comparison between the
data in the IP packet.</div>
<div><br>
</div>
<div>That might at least give a clue as to which set of commits
the problem might have appeared in :-)</div>
<div><br>
</div>
<div>Regards,</div>
<div><br>
</div>
<div>Peter</div>
<div><br>
On 30 May 2013, at 18:03, Daniel-Constantin Mierla <<a
moz-do-not-send="true" href="mailto:miconda@gmail.com">miconda@gmail.com</a>>
wrote:<br>
<br>
</div>
<blockquote type="cite">
<div>
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Hello,<br>
<br>
you can have some fun and then revert :-)<br>
<br>
Are the reserved bits before or after the websocket payload?<br>
<br>
Cheers,<br>
Daniel<br>
<br>
<div class="moz-cite-prefix">On 5/30/13 6:58 PM, Peter Dunkley
wrote:<br>
</div>
<blockquote cite="mid:51A7851E.4040900@crocodile-rcs.com"
type="cite">
<meta content="text/html; charset=ISO-8859-1"
http-equiv="Content-Type">
Hi Daniel,<br>
<br>
I don't think it is an MSRP issue. It's just I have first
spotted it with MSRP and now can't risk touching my SIP
WebSocket server.<br>
<br>
My suspicion is that (if it is related to the changes made
in the last 10 days) it is something that happens during or
after a call to tcp_send().<br>
<br>
Regards,<br>
<br>
Peter<br>
<br>
<br>
<div class="moz-cite-prefix">On 30/05/13 17:56,
Daniel-Constantin Mierla wrote:<br>
</div>
<blockquote cite="mid:51A784A0.3000409@gmail.com"
type="cite">
<meta content="text/html; charset=ISO-8859-1"
http-equiv="Content-Type">
<br>
<div class="moz-cite-prefix">On 5/30/13 6:44 PM, Peter
Dunkley wrote:<br>
</div>
<blockquote cite="mid:51A781E6.40306@crocodile-rcs.com"
type="cite">
<meta content="text/html; charset=ISO-8859-1"
http-equiv="Content-Type">
I don't have a commit ID for it working as the system
that is working was installed from RPMs. However, It
was compiled at 18:39:25 (BST) on May 20 2013.<br>
<br>
It will have been a clean pull from Git at the time it
was built.<br>
</blockquote>
After that date, from core perspective, sctp was moved as
a module, syn_branch parameter removed and pv cache used
for confg vars, but it doesn't look like should be a
direct effect on msrp. A bit before was removal of IPv6
define.<br>
<br>
Maybe is a side effect with some memory overflow. Can you
compile with MEMDBG=1 and see if you get some errors from
memory manager?<br>
<br>
Cheers,<br>
Daniel<br>
<br>
<blockquote cite="mid:51A781E6.40306@crocodile-rcs.com"
type="cite"> <br>
Peter<br>
<br>
<div class="moz-cite-prefix">On 30/05/13 17:36,
Daniel-Constantin Mierla wrote:<br>
</div>
<blockquote cite="mid:51A78014.1090502@gmail.com"
type="cite">
<meta content="text/html; charset=ISO-8859-1"
http-equiv="Content-Type">
<br>
<div class="moz-cite-prefix">On 5/30/13 6:17 PM, Peter
Dunkley wrote:<br>
</div>
<blockquote
cite="mid:51A77BB5.8090101@crocodile-rcs.com"
type="cite">
<meta http-equiv="content-type" content="text/html;
charset=ISO-8859-1">
When latest Kamailio git master sends a message over
WebSocket (specifically an MSRP reply on my test
system) I get the error,<br>
<blockquote>
<pre>One or more reserved bits are on: reserved1 = 1, reserved2 = 0, reserved3 = 0</pre>
</blockquote>
in Google Chrome. This happens for WebSockets over
TCP and WebSockets over TLS. It doesn't happen with
a build of Kamailio git master from around two weeks
ago.<br>
<br>
Have there been any changes in the network code over
the last couple of weeks that might have had an
effect on what Kamailio puts out on the wire for TCP
and TLS?<br>
</blockquote>
I don't recall any, but if you give the commit id of
the version you are running and it is ok, we can check
the rest of the commits till today.<br>
<br>
Cheers,<br>
Daniel<br>
<blockquote
cite="mid:51A77BB5.8090101@crocodile-rcs.com"
type="cite"> <br>
The code to send an MSRP reply over WebSocket is in
modules/msrp/msrp_netio.c:msrp_reply()<br>
<pre> if (unlikely((env->srcinfo.proto == PROTO_WS
|| env->srcinfo.proto == PROTO_WSS)
&& sr_event_enabled(SREV_TCP_WS_FRAME_OUT))) {
struct tcp_connection *con = tcpconn_get(env->srcinfo.id, 0, 0,
0, 0);
ws_event_info_t wsev;
if (con == NULL)
{
LM_WARN("TCP/TLS connection for WebSocket could not be"
"found\n");
return -1;
}
memset(&wsev, 0, sizeof(ws_event_info_t));
wsev.type = SREV_TCP_WS_FRAME_OUT;
wsev.buf = rplbuf;
wsev.len = p - rplbuf;
wsev.id = con->id;
return sr_event_exec(SREV_TCP_WS_FRAME_OUT, (void *) &wsev);
}</pre>
<br>
The code that handles the SREV_TCP_WS_FRAME_OUT
event is in modules/websocket/ws_frame.c and
basically involves:<br>
<ul>
<li>filling in the WebSocket message header<br>
</li>
<li>identifying the correct TCP/TLS connection</li>
<li>setting some flags (for example,
SND_F_FORCE_CON_REUSE)</li>
<li>calling tcp_send()</li>
</ul>
<p>These areas of the code haven't been changed for
months.<br>
</p>
<p>Regards,<br>
</p>
<p>Peter<br>
</p>
<br>
<br>
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<pre class="moz-signature" cols="72">--
Daniel-Constantin Mierla - <a moz-do-not-send="true" class="moz-txt-link-freetext" href="http://www.asipto.com">http://www.asipto.com</a>
<a moz-do-not-send="true" class="moz-txt-link-freetext" href="http://twitter.com/#%21/miconda">http://twitter.com/#!/miconda</a> - <a moz-do-not-send="true" class="moz-txt-link-freetext" href="http://www.linkedin.com/in/miconda">http://www.linkedin.com/in/miconda</a>
Kamailio Advanced Training, San Francisco, USA - June 24-27, 2013
* <a moz-do-not-send="true" class="moz-txt-link-freetext" href="http://asipto.com/u/katu">http://asipto.com/u/katu</a> *</pre>
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<pre class="moz-signature" cols="72">--
Daniel-Constantin Mierla - <a moz-do-not-send="true" class="moz-txt-link-freetext" href="http://www.asipto.com">http://www.asipto.com</a>
<a moz-do-not-send="true" class="moz-txt-link-freetext" href="http://twitter.com/#%21/miconda">http://twitter.com/#!/miconda</a> - <a moz-do-not-send="true" class="moz-txt-link-freetext" href="http://www.linkedin.com/in/miconda">http://www.linkedin.com/in/miconda</a>
Kamailio Advanced Training, San Francisco, USA - June 24-27, 2013
* <a moz-do-not-send="true" class="moz-txt-link-freetext" href="http://asipto.com/u/katu">http://asipto.com/u/katu</a> *</pre>
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<pre class="moz-signature" cols="72">--
Daniel-Constantin Mierla - <a moz-do-not-send="true" class="moz-txt-link-freetext" href="http://www.asipto.com">http://www.asipto.com</a>
<a moz-do-not-send="true" class="moz-txt-link-freetext" href="http://twitter.com/#%21/miconda">http://twitter.com/#!/miconda</a> - <a moz-do-not-send="true" class="moz-txt-link-freetext" href="http://www.linkedin.com/in/miconda">http://www.linkedin.com/in/miconda</a>
Kamailio Advanced Training, San Francisco, USA - June 24-27, 2013
* <a moz-do-not-send="true" class="moz-txt-link-freetext" href="http://asipto.com/u/katu">http://asipto.com/u/katu</a> *</pre>
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