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Re: [lwip-users] lwip + modbus TCP + UDP

From: Sylvain Rochet
Subject: Re: [lwip-users] lwip + modbus TCP + UDP
Date: Mon, 31 Dec 2018 16:09:09 +0100
User-agent: Mutt/1.5.23 (2014-03-12)


On Mon, Dec 31, 2018 at 02:31:22PM +0100, Pablo Ledergerber wrote:
> The freemodbus library uses the TCP Raw library and the upd discovery
> function the netconn api. We have one thread for modbusTCP,

The RAW API is not thread-safe, you can't use it within a thread (other 
than the lwIP core thread).

See http://www.nongnu.org/lwip/2_1_x/pitfalls.html


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