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[lwip-users] server send data to client failed

From: Mark Chen
Subject: [lwip-users] server send data to client failed
Date: Thu, 27 Sep 2018 15:36:07 +0800


We have used lwip in chip to communicate with server which use Netty( one Java library for TCP/IP programming ).

There is one problem: when the chip client restart very fast, in just 4-5 seconds, connected to sever successfully, and could send heart beat data to server, but the server CAN NOT send data to client. Did this problem caused by the "REUSE PORT" on client side? Because the last TCP port is in one invalid Status, and then the client use the same port intend to build one new TCP connection, and the server send data to client failed.

Am I right?

One Java developer

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