On 03/07/2018 04:05 AM, Mattia Settin wrote:
Hi
For example I need to check the send buffer size (e.i. SO_SNDBUF)
which is not implemented options.
Regards
Setting the send buffer size at run-time is not supported. We have a
compile time setting TCP_SND_BUF for that. Are you wanting to only get
the current send buffer size? I'm curious what the use case is. You
can easily use non-blocking sockets and an application specific write
buffer. TCP will then copy as much as it can to fill the send buffer and
return a partial write.
On Wed, Mar 7, 2018 at 10:55 AM, Mattia Settin
<[email protected] <mailto:[email protected]>> wrote:
Hi
Yes you are right but I don't need to touch the pcb, just some
check on the pcb.
getpeername stores the address of the peer that is connected
socket (it dosen't return the pcb structure).
Which is the api for retrive the connection tcp data for a certain
socket ?
Thanks
reagards
m
On Wed, Mar 7, 2018 at 10:26 AM, Jens Nielsen <[email protected]
<mailto:[email protected]>> wrote:
Hi
The short answer is: don't. If you're using the socket api
you're not touching the pcb.
What do you really want to do? There are basically two
options here
a) Just like your question about getpeername, there's an api
for that. Google is your friend.
or
b) Since the beginning of time people have managed without it,
in which case you're probably doing something weird and you're
probably on your own
BR /Jens
On 2018-03-07 10:07, Mattia Settin wrote:
Dear all
I developing an application wih lwip 2.0.3 using socket bsd.
The tcp server performs the following operation:
s = socket()
bind
accept //wait a new connection
read //packet received
I need to perform some check on the pcb data of my socket.
I note the get_socket is defined as static and the
get_sockopt do not return all data I need.
I solve adding following function in socket.c:
struct tcp_pcb * lwip_getsockpcb(int s)
{
struct lwip_sock *sock = get_socket(s);
if (!sock) {
return NULL;
}
return sock->conn->pcb.tcp;
}
My question is:
how can acces to the tcp_pcb of my socket with out modify the
library ?
Which is the smart way ?
Thank all
regard
--
Mattia Settin
Software and System Engineer
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--
Mattia Settin
Software and System Engineer
--
Mattia Settin
Software and System Engineer
Joel
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