[Serusers] bad udp packet? why!

Kanakatti Mahesh Subramanya mahesh at aptela.com
Sat Feb 26 15:12:18 CET 2005


you are "fragmenting"
basically, for various reasons, you want the entire request to fit into 
a single packet
try reducing the size of your payload...

cheers

jiangjp wrote:

>I installed the ser in Redhat 9.0. I use ngrep to capture the
>packet.Sometime I got the bad UDP packet send from ser. The following is an
>example(210.192.101.193 is the ser installed), before MESSAGE sip there are
>illeagal chars (maybe due to the udp size limit?):
>
> U 210.192.101.193:80 -> 218.25.90.134:31500 19036 at 0:1480
>  .P{.....MESSAGE sip:lumy1314 at 218.25.90.134:31500 SIP/2.0..Call-ID: 0f9
>  ffc6b4dbc35dd8cf153975330c83e at 210.192.101.20..CSeq: 1 MESSAGE..From: "
>  miphone" <sip:multichat at sip.miphone.cn:20000;transport=udp>;tag=160203
>  74..To: <sip:lumy1314 at dododoo.com>..Via: SIP/2.0/UDP 210.192.101.193:8
>  0;branch=z9hG4bKacb8.7ed584b7.0..Via: SIP/2.0/UDP 210.192.101.20:20000
>  ;branch=z9hG4bK42e5063b387e084e01f8119c4491d60e..Max-Forwards: 69..Con
>  tent-Type: text/x-miphone-multichat..Content-Length: 995..P-hint: usrl
>  oc applied....<?xml version="1.0" encoding="UTF-8"?>.<miphone>.<comman
>  d type="add user">.<from>sip:server</from>.<to>lumy1314 at dododoo.com</t
>  o>.<commandcontent>.<roomid>38563504</roomid>.<sipaddr>hxl at email.com.c
>  n</sipaddr>.<name>tuhxl-1</name>.<sex>...</sex>.<age>4</age>.<imageid>
>  99999</imageid><location></location>.<userauthority>2</userauthority>.
>  <userspeakstatus>NO</userspeakstatus>.<uservideostatus>NO</uservideost
>  atus>.<audioaddr>61.149.14.202</audioaddr>.<audioport>28904</audioport
>  >.<videoaddr>61.149.14.202</videoaddr>.<videoport>28914</videoport>.<n
>  attype>1</nattype>.<firewalladdr></firewalladdr>.<localvideoaddr>61.14
>  9.14.202</localvideoaddr>.<localvideoport>28914</localvideoport>.<loca
>  laudioaddr>61.149.14.202</localaudioaddr>.<localaudioport>28904</local
>  audioport>.<nowuserlist>.<user>hxl at email.com.cn</user>.<user>tuhxl at mip
>  hone.com.tv</user>.<user>bug at miphone.com.tv</user>.<user>lumy1314 at dodo
>  doo.com</user>.<user>czl at dododoo.com</user>.</nowuserlist>.</commandco
>  ntent>.</c                                                            
>
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