Re: [lwip-users] udp_send / udp_recv thread safefy

[Ricardo Martins]

Thanks, I'll use the tcpip_callback then.

Kind regards,

Ricardo martins

On Fri, Sep 8, 2017 at 2:52 PM, Dirk Ziegelmeier <address@hidden> wrote:

No, its not OK to call raw API functions from another thread.

See http://www.nongnu.org/lwip/2_0_x/pitfalls.html

Dirk

On Fri, Sep 8, 2017 at 12:04 PM, Ricardo Martins <address@hidden> wrote:

Hi,

I'm doing some work with LWIP 2.0.2 using the raw API to send and receive UDP datagrams and I have a doubt regarding the thread safety of udp_send and udp_recv. Right now I have a single UDP PCB instance and I'm handling incoming datagrams in one thread using the recv callback (I assume this thread is the tcpip_thread) and sending UDP datagrams in another thread. Is this safe or should I queue my UDP transmissions using the tcpip_callback_with_block ?

Kind regards,

Ricardo Martins

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