Apr 25, 2012 · You can turn on keepalive from c#, but the TCP-defaults implemented in .Net (from rfc) are to send something like a packet every 10 seconds starting after 2 hours. The mechanisms are almost exactly the same as sending your own message, only difference is the packets contains minimum of data - return contains only header, so it might be chopped

A TCP keep-alive packet is simply an ACK with the sequence number set to one less than the current sequence number for the connection. A host receiving one of these ACKs will respond with an ACK for the current sequence number. Keep-alives can be used to verify that the computer at the remote end of a connection is still available. Apr 25, 2012 · You can turn on keepalive from c#, but the TCP-defaults implemented in .Net (from rfc) are to send something like a packet every 10 seconds starting after 2 hours. The mechanisms are almost exactly the same as sending your own message, only difference is the packets contains minimum of data - return contains only header, so it might be chopped Basically, in spigot your players have 25 seconds from entering the play state to reply to keepalive packets, the problem is is that the server and client is generally doing a lot in that timeframe, e.g. processing chunks sent to the client, scoreboards, any plugins that use the login event it all adds up pretty fast on slower connections Generally 'keep-alive' packet is a probe to figure out: is other endpoint still active on this particular TCP connection? In your case some data exchange happens between server and client, then the server sends last data packet 261194 and stops transmitting further. The client ACKs this packet, but because it doesn't receive ne An application can request that a TCP/IP provider enable the use of keep-alive packets on a TCP connection. The default is that the use of keep-alive packets on a TCP connection is disabled. The default settings when a TCP socket is initialized sets the keep-alive timeout to 2 hours and the keep-alive interval to 1 second.

b) The following parameter (tcp_keepalive_intvl) determines the keepalive probe will resend every 10 seconds after first keep alive probe. This reduce from 75 seconds to 10 seconds gap or time interval between each of the keep alive probes. net.ipv4.tcp_keepalive_intvl = 10 c) Next parameter (tcp_keepalive_probes) is expressed in the pure number.

Solaris can’t be forced to enable keepalive for an application that does not set up the option. Once enabled, a “keepalive probe” packet is sent provided the connection has remained in the ESTABLISHED state and been idle for the specified time frame. This time frame is the “tcp_keepalive_interval”: When a connection have not received packets for a certain period of time (default 2 hours), it should send KEEP-ALIVE packets. My question is, who will start sending KEEP-Alive packets, the client, Jan 24, 2013 · A keep-alive of "1" ("send a keep alive packet every 1 minute") will make a TCP session appear to be "active" (not idle), and will prevent idle tcp session disconnects on any networking equipment between your client and your Terminal Server (F5 network load balancing devices, firewalls, routers, switches, etc).

May 20, 2014 · There is a feature in Remote Desktop Services that when enabled, sends a keep-alive packet from the server to the client at a specified interval. If the client responds, the server keeps the client status as active, and the traffic created by the keep-alive packets themselves resets the idle timer within the load balancer.

Keepalive can tell you when another peer becomes unreachable without the risk of false-positives. In fact, if the problem is in the network between two peers, the keepalive action is to wait some time and then retry, sending the keepalive packet before marking the connection as broken. Keepalive: A keepalive is a signal sent from one device to another to maintain a connection between the two devices. This may be between a client and a server, but it could apply to any number of devices or technologies. Keepalives are used in network environments to maintain an open communication pathway, or to regularly check the status of a Dec 17, 2014 · Since GRE is a packet tunneling mechanism for tunneling IP inside IP, a GRE IP tunnel packet can be built inside another GRE IP tunnel packet. For GRE keepalives, the sender pre-builds the keepalive response packet inside the original keepalive request packet so that the remote end only needs to do standard GRE decapsulation of the outer GRE IP