Solution: Error opening specified endpoint: "udp:161"

[Chuck B. <ch...@cr...>]

Hmmm...The problem lies in a new ALLOW_PORT_HIJACKING define that only 
occurs in agent/snmpUDPDomain.c  Once I defined it things work as with 
5.0.6.  Of course it leaves the windows app susceptible to having the port 
taken away, as is outlined in the source file.

The odd thing is that Linux runs fine without port reuse but Windows won't. 
 Any Win32 gurus out there that could shed some light on this?  I don't see 
anything in the MSDN docs to imply any windows-specific behavior for bind() 
or SO_REUSEADDR.

Wes (or anyone more appropriate): Could ALLOW_PORT_HIJACKING be added to 
net-snmp-config.h (I assume through configure)?

- Chuck Bueche

-----Original Message-----
From:	Chuck Bueche [SMTP:ch...@cr...]
Sent:	Thursday, January 16, 2003 5:09 PM
To:	net...@li...
Subject:	Error opening specified endpoint: "udp:161"

I'm upgrading from 5.0.6 to 5.0.7 in Win32 (linux runs fine) and having a
problem starting snmpd, getting the error message above.  As far as I can
tell, I'm using the same configuration options that I did with 5.0.6 (which 
compiled and ran fine).  Here's the tail-end of the debug file:

trace:  D:\Dev\TrippLite\net-snmp-5.0.7\agent\snmp_agent.c, 834
snmp_agent: final port spec: udp:161
trace:  D:\Dev\TrippLite\net-snmp-5.0.7\agent\snmp_agent.c, 850
snmp_agent: installing master agent on port udp:161
trace:  d:\dev\tripplite\net-snmp-5.0.7\snmplib\snmp_transport.c, 325
tdomain: specifier "udp" address "161"
trace:  d:\dev\tripplite\net-snmp-5.0.7\snmplib\snmp_transport.c, 331
tdomain: specifier "udp" matched
trace:  d:\dev\tripplite\net-snmp-5.0.7\snmplib\snmpudpdomain.c, 349
netsnmp_sockaddr_in: addr 0012F248, peername "161"
trace:  d:\dev\tripplite\net-snmp-5.0.7\snmplib\snmpudpdomain.c, 394
netsnmp_sockaddr_in: totally numeric: 161
trace:  d:\dev\tripplite\net-snmp-5.0.7\snmplib\snmpudpdomain.c, 437
netsnmp_sockaddr_in: return { AF_INET, 0.0.0.0:161 }
trace:  d:\dev\tripplite\net-snmp-5.0.7\snmplib\snmpudpdomain.c, 206
netsnmp_udp: open local 0.0.0.0
Error opening specified endpoint "udp:161"
Server Exiting with code 1

I've tried a variety of configuration changes, including:
- Using all the files provided in the 5.0.7 win32 directory.
- Using my old config files from version 5.0.6.
- Editing the 5.0.7 files to provide changes I require (which work in
5.0.6).

I'm running with no options, just 'snmpd_d'.  I'm also using openssl and
the Windows Platform SDK, if it matters.

Any wisdom out there?  Is there a new input parameter necessary that I've
missed?

- Chuck Bueche


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