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Re: [lwip-users] idle connection timeout

From: mobin.seven
Subject: Re: [lwip-users] idle connection timeout
Date: Mon, 15 Sep 2014 23:39:33 -0700 (MST)

Simon Goldschmidt-2 wrote
> mobin.seven wrote:
>> I want to close idle connections on server side with 15s timeout.
>> Is  SO_RCVTIMEO what I need?
>> I use this line:
>> int timeout = 15000;
>> lwip_setsockopt(sock, SOL_SOCKET, SO_RCVTIMEO, &timeout,
>> sizeof(timeout));
> Where did you get that line from? lwIP tries to implement the standard. 
> And the standard says (google for "opengroup so_rcvtimeo" and you find 
> it) that it "accepts a timeval structure" for SO_RCVTIMEO. I guess you 
> have been using winsock before (they use a DWORD pointer with 
> miliseconds)? Winsock is in most cases not a good example when trying to 
> write portable code :-)
> Simon

yes I'm coming from winsock :D I edited my code:

     struct timeval tv;
     tv.tv_sec= 0;
     tv.tv_usec= 500;

     lwip_setsockopt(sock, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(struct
timeval));// returns 92

I'm still getting ENOPROTOOPT !
Is it wrong yet?
Thank you

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