SSL AMI connection break

Asterisk Asterisk Support
1

Hi,
I am using SSL AMI connection with asterisk. AMI Connection is breaking if number of calls is more than 30/second. There is no impact if we use non-secure AMI connection.
The frequency of AMI disconnection increase if call volume increase per second. For example if number of call 30/second, disconnection frequency is 2 minute. If number calls 100/second then disconnection happen in every 30seconds.
The error I am getting following:
ERROR[14131]: utils.c:1234 ast_careful_fwrite: fwrite() returned error: Broken pipe

I have tested this using asterisk-1.6.2 and also in asterisk-13.9.
I am using CentOS-6.7

How to reproduce:

  1. Make AMI secure connection from java client.
  2. From java-client send Action: Originate for sip channels around 50 per second and redirect these call to another asterisk where it wait for few seconds and hangup.

Please help me to solve this problem.

2

Your application is not consuming data fast enough and the TCP stream is backing up within the Linux server as far as the Asterisk application.

3

@david551, It does not matter in whatever speed application consume data. Socket always break. Also socket does not break in case of non-secure AMI connection for any number of channels per second (checked up to 100 calls per second). If you want I can share my java application for testing.

4

The only meaning, in practice, for that error is a data overrun, as the result of TCP frames not being acknowledged fast enough by the remote end. Whilst I don’t understand why SSL should make a difference, it doesn’t change the fact that there was a low lever write failure, and that failure is almost always a WOULD BLOCK exception. The error has happening below the level at which Asterisk cares whether or not it is dealing with encrypted data.