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[lwip-devel] [bug #18969] crashes in udp_bind

From: Tim Shirley
Subject: [lwip-devel] [bug #18969] crashes in udp_bind
Date: Thu, 08 Feb 2007 02:02:59 +0000
User-agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.0.3705; .NET CLR 1.1.4322; Media Center PC 4.0; .NET CLR 2.0.50727)

Follow-up Comment #4, bug #18969 (project lwip):

Made quite a bit more progress...

udp_bind() is ok... it turns out that it really was hanging at the call to
snmp_cold_trap().  I commented that out (work on that another day) and
started working on the snmp get stuff.

sending get to my lwIP SNMP embedded system:

  receives udp packet... good
  starts doing various tests .... good
  completes recognition of iso.org.dod.internet ... good
  when processing snmp_search_tree() always returns NULL

Good thing - it no longer crashes
Bad thing - I haven't figured out why it won't do the search tree.  I'm
trying to send get iso.org.dod.internet.mgmt.mib-2.system.3, and .4 (which it
looks like the code should respond to).  The ident length that is passed to
snmp_search_tree is 4 (which I expect).  The ident value is 02 00 00 00 (I
have a routine to print as bytes)... I'm guessing each time through the while
loop will drill down to the next level so that isn't too odd (I double checked
that I was sending the right info with a packet sniffer).  It takes the
MIB_NODE_SC branch and then returns NULL...

Any new words of wisdom on what to look @ next?




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