enabling compact headers - what is that?
-Saurabh
Date: Tue, 18 Nov 2008 04:29:28 -0600From: [EMAIL PROTECTED]: [EMAIL
PROTECTED]: Re: [Freeswitch-users] SIP Invite IP fragmentation issueIts not
really possible other then enabling compact headers or by getting rid of codecs
that you don’t actually want to use... Another thing you could do is get your
broken ISP to fix their firewall... It is not correct to just drop fragmented
packets just because they are fragmented.. This is something that will happen
on a regular basis on the internet as not everything has an MTU of 1500
From: Saurabh Aggarwal <[EMAIL PROTECTED]>Reply-To:
<freeswitch-users@lists.freeswitch.org>Date: Tue, 18 Nov 2008 10:19:55 +0000To:
<freeswitch-users@lists.freeswitch.org>Subject: Re: [Freeswitch-users] SIP
Invite IP fragmentation issueOk, my bad. Ethereal for some reason was showing
only the first fragment (ethereal bug?). But, now it seems I have hit another
problem - it seems that the SIP invites (which are fragmented) are being
dropped by the firewall in between us and the SIP provider. Is it possible to
shrink the size of the SIP invite so that it fits in a single packet? Any
optional stuff in the SIP invite that is sent, that can be thrown away? -Saurabh
From: [EMAIL PROTECTED]: [EMAIL PROTECTED]: Tue, 18 Nov 2008 07:34:11
+0000Subject: [Freeswitch-users] SIP Invite IP fragmentation issueI am having
an *odd* issue, which i am not sure freeswitch is to be blamed for. Sometimes,
the SIP invites are bigger than 1500 bytes causing IP fragmentation, but when I
look at the TCP dump (on the same machine as freeswitch), I see that only the
first packet of the fragment is captured. Is freeswitch trying to do its own IP
fragmentation or is it relying on underlying linux (kernel 2.6.18)? I created a
small program to send UDP packets of 2000 bytes, and also tried with ping -s
2000, and both were successful, so am leaning towards blaming Freeswitch. Any
suggestions? -Saurabh
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