CODEWITHSUNDEEP
javasocketswebsocketsocket.ioserversocket
Mulder
Mulder

Reputation: 25

Socket Programing java - how much time socket connection is alive? And how can I control it?

Do you know how can I keep alive a socket connection if I do not do any actions on the socket? I just noticed that if my connection is on background and I do not operate it I get this:

java.net.SocketException: Connection reset by peer: socket write error
    at java.net.SocketOutputStream.socketWrite0(Native Method)
    at java.net.SocketOutputStream.socketWrite(Unknown Source)
    at java.net.SocketOutputStream.write(Unknown Source)
    at java.io.DataOutputStream.writeInt(Unknown Source)

So, how can I control that the connection will not be lost after some idle time and after how much time by default does it happen?

Upvotes: 1

Views: 1745

Answers (2)

Stephen C
Stephen C

Reputation: 719316

This problem has no general solution. It is quite likely that the remote server / service that has decided to reset/close the TCP/IP connection. How and why it decides is application specific. An application specific solution will be required to prevent it.

FWIW, the SO_KEEP_ALIVE mechanism causes the protocol stack to occasionally exchange messages on an otherwise idle TCP/IP connection. This may help if you are experiencing resets on a NATed connection due to port reuse. The relevant Java method is Socket.setKeepAlive.

Upvotes: 2

user207421
user207421

Reputation: 310998

Connection reset by peer: socket write error

This is usually caused by writing to a connection that has already been closed by the peer. It is an application protocol error. You should investigate that first before worrying about connection lifetimes.

Upvotes: 1

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