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GH-2837: TCP NIO Prioritize accept

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See https://github.com/spring-projects/spring-integration/pull/2837

Give priority to accepting new connections over reading data from
existing connections.
Add a flag to allow users to revert to the previous behavior of
giving reads priority.

**cherry-pick to 5.1.x**

# Conflicts:
#	spring-integration-ip/src/main/java/org/springframework/integration/ip/tcp/connection/TcpNioServerConnectionFactory.java
#	src/reference/asciidoc/whats-new.adoc
#   TcpNioConnectionTests.java
This commit is contained in:
Gary Russell
2019-03-28 11:57:06 -04:00
committed by Artem Bilan
parent 6e9bb60a61
commit 6f3fd0961f
4 changed files with 121 additions and 38 deletions
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4
src/reference/asciidoc/ip.adoc
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@@ -971,6 +971,10 @@ Alternatively, you can insert a resequencer downstream of the inbound endpoint t
If you set `apply-sequence` to `true` on the connection factory, messages arriving on a TCP connection have `sequenceNumber` and `correlationId` headers set.
The resequencer uses these headers to return the messages to their proper sequence.
IMPORTANT: Starting with version 5.1.4, priority is given to accepting new connections over reading from existing connections.
This should, generally, have little impact unless you have a very high rate of new incoming connections.
If you wish to revert to the previous behavior of giving reads priority, set the `multiAccept` property on the `TcpNioServerConnectionFactory` to `false`.
==== Pool Size
The pool size attribute is no longer used.