<div dir="ltr">2013/7/2 IOhannes m zmoelnig <span dir="ltr"><<a href="mailto:zmoelnig@iem.at" target="_blank">zmoelnig@iem.at</a>></span><br><div class="gmail_extra"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<div class="im"><br>
On 2013-07-02 13:39, Antoine Villeret wrote:<br>
><br>
> I realize that with iemnet's version of tcpclient/tcpserver, if two<br>
> client connect at the same time to server, only on receive data<br>
> not the other, <br>
<br>
</div>that's a different bug, please report it.<br></blockquote><div><br></div><div style>strangely I cannot reproduce it now, but when it happens i'll report it</div><div style><br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
(please also report *this* bug in the sourceforge bugtracker for<br>
"pure-data")<br>
<div class="im"><br></div></blockquote><div style>ok, i'll do</div><div style>sorry, I was thinking pure-data bug tracker was only for pure-data bugs not for externals ones...</div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div class="im">
<br>
> so I put a timeout to disconnect the client if no answer was<br>
> received in a certain time and then reconnect<br>
><br>
> i first make this with iemnet's tcpserver and I got a SIGPIPE on<br>
> the server side (see my previous post) while I got SIGSEGV on the<br>
> client side, here is the gdb backtrace :<br>
><br>
> [New Thread 0x7fff7bfff700 (LWP 4478)]<br>
><br>
> Program received signal SIGSEGV, Segmentation fault. [Switching to<br>
> Thread 0x7fffc8ff9700 (LWP 4477)] 0x0000000000472963 in clock_set<br>
> () (gdb) watchdog: signaling pd...<br>
<br>
</div>tip: when running Pd in a debugger, always use "-nrt".<br>
<br>
general remark: to get a backtrace, please run "bt" in the debugger<br>
(after the crash).<br></blockquote><div><br></div><div style>ok thanks for that, gdb is still a bit confusing for me </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div class="im"><br>
> I think in the server side a signal(SIGPIPE, SIG_IGN); could help<br>
> but I don't know where to put it (in tcpserver.c ? in<br>
> iemlnet_sender.c or somewhere else ?)<br>
<br>
</div>i don't think this is a good solution.<br>
i would prefer something along the lines of "setsockopt(SO_NOSIGPIPE)"<br>
and/or "send(..., MSG_NOSIGNAL)" - a solution that does not have<br>
side-effects on the entire Pd.<br></blockquote><div><br></div><div style>ok </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div class="im"><br>
><br>
> also I tested it with the mrpeach's version, it doesn't crash but<br>
> the GUI hangs gdb doesn't tell anything, it continue to show thread<br>
> creation and exiting<br>
><br>
> also I'm using iemnet's first because it has a [port( method to<br>
> change the binding port on the fly and I made a rebinding routing<br>
> to choose an available port in a certain range both in server and<br>
> in client side to prenvent connection error if port is still used<br>
> after a crash for example<br>
><br>
> I don't know how to go further with this, But I really need a<br>
> reliable server for some project and for now I just have an<br>
> headache :-) please tell me how i can help fixing this (and please<br>
> note that I don't know anything on tcp communication...)<br>
<br>
</div>btw, my experimental repository for iemnet is at [1].<br>
i added the MSG_NOSIGNAL flag (currently this is linux only), and the<br>
server does not crash anymore, but the clients still do.<br></blockquote><div><br></div><div style>ok thanks I'll check it</div><div style><br></div><div style>best regards</div><div style>a </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<br>
fgmasdr<br>
IOhannes<br>
<br>
<br>
<br>
[1] <a href="https://github.com/umlaeute/pd-iemnet" target="_blank">https://github.com/umlaeute/pd-iemnet</a><br>
<br>
<br>
<br>
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