tcp (Source)

A Stream App application can be configured to receive events via the TCP transport by adding the type='tcp' annotation at the top of an event stream definition. When this is defined the associated stream will receive events from the TCP transport on the host and port defined in the system.

Syntax

CREATE SOURCE <NAME> WITH (type="tcp", map.type="<STRING>", context="<STRING>")

Query Parameters

Name	Description	Default Value	Possible Data Types	Optional	Dynamic
context	The URL context that should be used to receive the events.	/	STRING	Yes	No

System Parameters

Name	Description	Default Value	Possible Parameters
host	Tcp server host.	0.0.0.0	Any valid host or IP
port	Tcp server port.	9892	Any integer representing valid port
receiver.threads	Number of threads to receive connections.	10	Any positive integer
worker.threads	Number of threads to serve events.	10	Any positive integer
tcp.no.delay	This is to specify whether to disable Nagle algorithm during message passing. If tcp.no.delay = true, the execution of Nagle algorithm will be disabled in the underlying TCP logic. Hence there will be no delay between two successive writes to the TCP connection. Else there can be a constant ack delay.	true	true false
keep.alive	This property defines whether the server should be kept alive when there are no connections available.	true	true false

Example 1

CREATE SOURCE Foo WITH (type = 'tcp', context='abc', map.type='binary') (attribute1 string, attribute2 int );

Under this configuration, events are received via the TCP transport on default host,port, abc context, and they are passed to Foo stream for processing.