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Re: [lwip-users] UDP bind error due to address and port reuse
From
:
Dirk Ziegelmeier
Subject
:
Re: [lwip-users] UDP bind error due to address and port reuse
Date
:
Wed, 7 Dec 2016 11:43:59 +0100
Use one UDP PCB, bind it to IPADDR_ANY and port x.
Use udp_sendto() to send to any IP/port combination.
http://www.nongnu.org/lwip/2_0_0/group__udp__raw.html
You get the src address/port of any request in your receive callback:
void my_udp_recv_fn (void *arg, struct
udp_pcb
*pcb, struct
pbuf
*p, const
ip_addr_t
*addr, u16_t port)
{
[create new pbuf with response]
udp_sendto(pcb, response_pbuf, addr, port);
}
Dirk
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[lwip-users] UDP bind error due to address and port reuse
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