failed to connect to postgres server

Question

I have a strange issue. Until 2 days back, my setup has been working for almost 2 years. the setup that always worked :

1. I use postgress 9.3 for development on my laptop. 
2. I use intellij idea database tools to browse data
3. sometimes I use pgadmin
4. I run maven build of our application

for the past 2 days, when I run maven install , build fails with

[main] ERROR SqlExceptionHelper.logExceptions(146) | Cannot create PoolableConnectionFactory (The connection attempt failed.)

but, my idea client, pgadmin have no problem connecting.

pg log has the following :

2015-11-06 11:08:02 CST LOG:  could not receive data from client: An operation was attempted on something that is not a socket.


2015-11-06 11:08:02 CST LOG:  incomplete startup packet
2015-11-06 11:08:17 CST LOG:  could not receive data from client: An operation was attempted on something that is not a socket.


2015-11-06 11:08:17 CST LOG:  incomplete startup packet
2015-11-06 11:08:35 CST WARNING:  pgstat wait timeout
2015-11-06 11:08:46 CST WARNING:  pgstat wait timeout
2015-11-06 11:09:35 CST WARNING:  pgstat wait timeout
2015-11-06 11:09:45 CST WARNING:  pgstat wait timeout

I also disabled firewall and tried. It still fails.

any hints on what could be happening ?

Answer 1

It looks like something's wrong with the windows TCP/IP stack.

See:

• https://support.microsoft.com/en-us/kb/817571
• PostgreSQL error: could not receive data from client: An operation was attempted on something that is not a socket
• The mailing list thread http://www.postgresql.org/message-id/AANLkTimgyax1LUU85caP2FfwKTWkdAwDIE3S7zI-6oea@mail.gmail.com

Possible actions include:

• Completely uninstall your antivirus product or (worse) "internet security" suite if you have one. Disabling it is not likely to be enough. You can reinstall or install a better one once you've confirmed it's the cause.

• Do a windows TCP/IP stack reset . Exact steps depend on your Windows version, which you did not mention, so you might need to look around a bit. This might have side effects like clearing settings that break other applications. You should know what you're doing, be willing to accept possible problems, or get professional support from a tech with Windows skills.

• Check the system for possible rootkit or undetected virus activity

• Uninstall any unnecessary drivers for 3G modems, cable providers, etc

• If you installed any software recently, remove it