Let’s imagine the situation that I have:
number of solace hosts: 3
connect retries: 2
connect retries per host: 4
What would be the final number of retries, if it would be 24, like 2 x 4 per host? Or how it would work?
There is a very good example of this topic in the docs here: Configuring Connection Time-Outs and Retries).
Check out the diagram and example at the bottom of this page.
Thank you, definitely example is very good and explains everything. Haven’t reached it during the first attempt by reading the doc.
number of solace hosts: 3 connect retries: 2 connect retries per host: 4 If you have brokers A, B, and C. I think it should do:
AAAABBBBCCCCAAAABBBBCCCC done.
Right?
p.s. why do you have 3 hosts??
At least I got the different from a doc.
AAAA BBBB CCCC - the first try
AAAA BBBB CCCC - the first retry
AAAA BBBB CCCC - the second retry
In total I expect: AAAABBBBCCCCAAAABBBBCCCCAAAABBBBCCCC
P.S. I don’t have 3 hosts, it was just an example to understand how it works
@b1102 the above looks correct. I think it differs from @Aaron 's example because Aaron left out the initial connect tries.
That’s what I get for not testing it myself and going from memory! ? Either way, none of us are correct. I just tested with JCSMP 10.19. With the above settings, you get:
AAAAA BBBBB CCCCC AAAAA BBBBB CCCCC
Retries per host = 1 attempt + number of retries. So 4 means 5 attempts in a row.
Then Connect Retries = total number of loops.
So my results don’t line up with the docs, @amackenzie > …!
JCSMP Channel Properties setting:
channelProps.setConnectRetriesPerHost(4);
channelProps.setConnectRetries(2);
Configured 3 hosts, with an invalid VPN name for testing purposes:
11:54:09.170 INFO - DemoPublisher initializing…
11:54:09.586 INFO - Client-1: Connecting to host ‘orig=localhost, host=localhost’ (host 1 of 3, smfclient 1, attempt 1 of 6, this_host_attempt: 1 of 5)
11:54:12.673 INFO - Client-1: Connecting to host ‘orig=localhost, host=localhost’ (host 1 of 3, smfclient 1, attempt 1 of 6, this_host_attempt: 2 of 5)
11:54:15.684 INFO - Client-1: Connecting to host ‘orig=localhost, host=localhost’ (host 1 of 3, smfclient 1, attempt 1 of 6, this_host_attempt: 3 of 5)
11:54:18.708 INFO - Client-1: Connecting to host ‘orig=localhost, host=localhost’ (host 1 of 3, smfclient 1, attempt 1 of 6, this_host_attempt: 4 of 5)
11:54:21.715 INFO - Client-1: Connecting to host ‘orig=localhost, host=localhost’ (host 1 of 3, smfclient 1, attempt 1 of 6, this_host_attempt: 5 of 5)
11:54:21.723 INFO - Client-1: Connecting to host ‘orig=public.messaging.solace.cloud, host=public.messaging.solace.cloud’ (host 2 of 3, smfclient 1, attempt 2 of 6, this_host_attempt: 1 of 5)
11:54:24.751 INFO - Client-1: Connecting to host ‘orig=public.messaging.solace.cloud, host=public.messaging.solace.cloud’ (host 2 of 3, smfclient 1, attempt 2 of 6, this_host_attempt: 2 of 5)
11:54:27.784 INFO - Client-1: Connecting to host ‘orig=public.messaging.solace.cloud, host=public.messaging.solace.cloud’ (host 2 of 3, smfclient 1, attempt 2 of 6, this_host_attempt: 3 of 5)
11:54:30.810 INFO - Client-1: Connecting to host ‘orig=public.messaging.solace.cloud, host=public.messaging.solace.cloud’ (host 2 of 3, smfclient 1, attempt 2 of 6, this_host_attempt: 4 of 5)
11:54:33.846 INFO - Client-1: Connecting to host ‘orig=public.messaging.solace.cloud, host=public.messaging.solace.cloud’ (host 2 of 3, smfclient 1, attempt 2 of 6, this_host_attempt: 5 of 5)
11:54:33.878 INFO - Client-1: Connecting to host ‘orig=aaron.messaging.solace.cloud, host=aaron.messaging.solace.cloud’ (host 3 of 3, smfclient 1, attempt 3 of 6, this_host_attempt: 1 of 5)
11:54:37.347 INFO - Client-1: Connecting to host ‘orig=aaron.messaging.solace.cloud, host=aaron.messaging.solace.cloud’ (host 3 of 3, smfclient 1, attempt 3 of 6, this_host_attempt: 2 of 5)
11:54:40.796 INFO - Client-1: Connecting to host ‘orig=aaron.messaging.solace.cloud, host=aaron.messaging.solace.cloud’ (host 3 of 3, smfclient 1, attempt 3 of 6, this_host_attempt: 3 of 5)
11:54:44.263 INFO - Client-1: Connecting to host ‘orig=aaron.messaging.solace.cloud, host=aaron.messaging.solace.cloud’ (host 3 of 3, smfclient 1, attempt 3 of 6, this_host_attempt: 4 of 5)
11:54:47.716 INFO - Client-1: Connecting to host ‘orig=aaron.messaging.solace.cloud, host=aaron.messaging.solace.cloud’ (host 3 of 3, smfclient 1, attempt 3 of 6, this_host_attempt: 5 of 5)
11:54:51.169 INFO - Client-1: Connecting to host ‘orig=localhost, host=localhost’ (host 1 of 3, smfclient 1, attempt 4 of 6, this_host_attempt: 1 of 5)
11:54:54.183 INFO - Client-1: Connecting to host ‘orig=localhost, host=localhost’ (host 1 of 3, smfclient 1, attempt 4 of 6, this_host_attempt: 2 of 5)
11:54:57.204 INFO - Client-1: Connecting to host ‘orig=localhost, host=localhost’ (host 1 of 3, smfclient 1, attempt 4 of 6, this_host_attempt: 3 of 5)
11:55:00.227 INFO - Client-1: Connecting to host ‘orig=localhost, host=localhost’ (host 1 of 3, smfclient 1, attempt 4 of 6, this_host_attempt: 4 of 5)
11:55:03.243 INFO - Client-1: Connecting to host ‘orig=localhost, host=localhost’ (host 1 of 3, smfclient 1, attempt 4 of 6, this_host_attempt: 5 of 5)
11:55:03.255 INFO - Client-1: Connecting to host ‘orig=public.messaging.solace.cloud, host=public.messaging.solace.cloud’ (host 2 of 3, smfclient 1, attempt 5 of 6, this_host_attempt: 1 of 5)
11:55:06.329 INFO - Client-1: Connecting to host ‘orig=public.messaging.solace.cloud, host=public.messaging.solace.cloud’ (host 2 of 3, smfclient 1, attempt 5 of 6, this_host_attempt: 2 of 5)
11:55:09.364 INFO - Client-1: Connecting to host ‘orig=public.messaging.solace.cloud, host=public.messaging.solace.cloud’ (host 2 of 3, smfclient 1, attempt 5 of 6, this_host_attempt: 3 of 5)
11:55:12.399 INFO - Client-1: Connecting to host ‘orig=public.messaging.solace.cloud, host=public.messaging.solace.cloud’ (host 2 of 3, smfclient 1, attempt 5 of 6, this_host_attempt: 4 of 5)
11:55:15.423 INFO - Client-1: Connecting to host ‘orig=public.messaging.solace.cloud, host=public.messaging.solace.cloud’ (host 2 of 3, smfclient 1, attempt 5 of 6, this_host_attempt: 5 of 5)
11:55:15.441 INFO - Client-1: Connecting to host ‘orig=aaron.messaging.solace.cloud, host=aaron.messaging.solace.cloud’ (host 3 of 3, smfclient 1, attempt 6 of 6, this_host_attempt: 1 of 5)
11:55:18.894 INFO - Client-1: Connecting to host ‘orig=aaron.messaging.solace.cloud, host=aaron.messaging.solace.cloud’ (host 3 of 3, smfclient 1, attempt 6 of 6, this_host_attempt: 2 of 5)
11:55:22.354 INFO - Client-1: Connecting to host ‘orig=aaron.messaging.solace.cloud, host=aaron.messaging.solace.cloud’ (host 3 of 3, smfclient 1, attempt 6 of 6, this_host_attempt: 3 of 5)
11:55:25.802 INFO - Client-1: Connecting to host ‘orig=aaron.messaging.solace.cloud, host=aaron.messaging.solace.cloud’ (host 3 of 3, smfclient 1, attempt 6 of 6, this_host_attempt: 4 of 5)
11:55:29.264 INFO - Client-1: Connecting to host ‘orig=aaron.messaging.solace.cloud, host=aaron.messaging.solace.cloud’ (host 3 of 3, smfclient 1, attempt 6 of 6, this_host_attempt: 5 of 5)
11:55:32.730 INFO - Client-1: Channel Closed (smfclient 1) at com.solacesystems.jcsmp.protocol.impl.TcpChannel.executePostOnce(TcpChannel.java:235)
at com.solacesystems.jcsmp.protocol.impl.ChannelOpStrategyClient.performOpen(ChannelOpStrategyClient.java:101)
at com.solacesystems.jcsmp.protocol.impl.TcpClientChannel.performOpenSingle(TcpClientChannel.java:428)
at com.solacesystems.jcsmp.protocol.impl.TcpClientChannel.access$800(TcpClientChannel.java:124)
at com.solacesystems.jcsmp.protocol.impl.TcpClientChannel$ClientChannelConnect.call(TcpClientChannel.java:2610)
at com.solacesystems.jcsmp.protocol.impl.TcpClientChannel.open(TcpClientChannel.java:404)
at com.solacesystems.jcsmp.impl.JCSMPBasicSession.sniffRouter(JCSMPBasicSession.java:423)
at com.solacesystems.jcsmp.impl.JCSMPBasicSession.connect(JCSMPBasicSession.java:1310)
at dev.solace.pqdemo.PQPublisher.main(PQPublisher.java:155)
Note, it appears that channelProps.setConnectRetries(0); and channelProps.setConnectRetries(1); behave the same way in JCSMP… that is: one time through the host list.
Maybe it’s different for C, .NET, JS…?