Short Connection Function; Keepalive Function; Timeout Restart Function - Ebyte E810-DTU User Manual

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3.4.5 Short connection function

TCP short connection is mainly used to save server resources and is generally used in multi-point to one-point scenarios. With
short connections, you can ensure that the existing connections are useful connections and do not require additional controls for
filtering.
The TCP short connection function is applied to the TCP Client mode. After the short connection function is enabled, to send
the message, If there is no data reception in the serial port or network port within the set time, the connection will be automatically
disconnected. The short connection function is turned off by default, and the disconnection time can be set after the function is turned
on. The setting range is 2~255S.

3.4.6 KeepAlive function

Keep-Alive is the mechanism for detecting dead connections in a TCP connection. When the user does not send any data, the
"Keep-Alive" information is periodically sent on the TCP link to maintain the idle link, avoiding dead connections and consuming
unnecessary system resources. This setting is valid under TCP and the user can customize the Keep-Alive switch and other parameters.
Keepalive parameter introduction:
Time: How many seconds after the TCP link does not receive data packet transmission to start the probe packet;
Intv: Time interval between the previous detection message and the next detection message;
Probes: The maximum number of probe failures. When the sniffing fails to this number, the TCP connection will be
disconnected.

3.4.7 Timeout restart function

The timeout restart (no data restart) function is mainly used to ensure long-term stable operation of the E810-TTL. When the
network port or the network does not receive data for a long time, the E810-TTL will restart after the set time is exceeded to avoid
anomalies affecting communications. The time of timeout restart can be set through the webpage. The normal working time of this
function is set to 60~65535S, and the default value is 3600S. 0 is off, when the setting is out of range, it returns to the default value.
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E810-DTU(1RS1E) User Manual
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