NDK TCP connection timeout

cobsonchael

So i am unable to find in the documentation of the NDK on how to set a TCP connection timeout value. is there a socket option i am missing?

over 9 years ago

0 Vincent W. over 9 years ago

TI__Genius 12865 points

Hi cobsonchael,

The socket option 'SO_RCVTIMEO' for the function setsockopt() should help set a timeout on input operations. See if that is what you are looking for.

The NDK API user guide has more details on getsockopt().

Best regards,

Vincent

0 cobsonchael over 9 years ago in reply to Vincent W.

Mastermind 7930 points

correct me if i'm wrong but wouldn't that also put a timeout for ANY received data during the entire connection? or do you suggest i set it for a connection attempt and unset it after the connection is established?

0 Sara Fernandez over 9 years ago in reply to cobsonchael

Prodigy 170 points

Hi cobsonchael,

you can set it under the IP Settings in your .cfg file. Like in the picture, my connection timeout is set to 10s.

Hope it helps,

Sara

0 cobsonchael over 9 years ago in reply to Sara Fernandez

Mastermind 7930 points

just to be exact: the connection timeout is for the connection attempt ONLY and not for also the transmit and receive timeouts as well?

0 Sara Fernandez over 9 years ago in reply to cobsonchael

Prodigy 170 points

Hi,

the one in the Image before is for the connect. You can see the details if you go to the Advanced options in the IP Settings:

you can see that the one I set to 10s is only for the connection and "socketIoTimeout" to read and write on the socket. If you want to set timeouts for sending or receiving, you can do it using the properties of the socket itself:

struct timeval to;

to.tv_sec = 30;
to.tv_usec = 0;

setsockopt( yourSocket, SOL_SOCKET, SO_SNDTIMEO, &to, sizeof( to ))

setsockopt( yourSocket, SOL_SOCKET, SO_RCVTIMEO, &to, sizeof( to ))

for example, to set 30s for receive and send timeouts.

Greetings,

Sara

0 Vincent W. over 9 years ago in reply to cobsonchael

TI__Genius 12865 points

Hi cobsonchael,

If you are looking for a timeout for the connect() function call, then you should follow Sara's suggestion to set Ip.socketConnectTimeout. This would not affect transmit and receive timeouts.

Fyi, here is another thread that discusses the behavior for Ip.socketConnectTimeout:

http://e2e.ti.com/support/embedded/tirtos/f/355/p/123605/443315#443315

Best regards,

Vincent

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NDK TCP connection timeout