[jira] [Created] (FLINK-4630) add netty tcp source support

[Shang Yuanchun (Jira)]

shijinkui created FLINK-4630:
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             Summary: add netty tcp source support
                 Key: FLINK-4630
                 URL: https://issues.apache.org/jira/browse/FLINK-4630
             Project: Flink
          Issue Type: New Feature
          Components: Streaming Connectors
            Reporter: shijinkui


When source stream get start, listen a provided tcp port, receive stream data sent from the place where origin data generated.
This netty tcp source is end-to-end, that is from business system to flink worker directly.

Such source service is needed in produce indeed.

describe the source in detail below:

1. source run as a netty tcp server
2. user provide a tcp port, if the port is in used, increace the port number between 1024 to 65535
3. callback the provided url to report the real port to listen



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