SOCKET/6/TCPWNDCLOSE

Message

SOCKET/6/TCPWNDCLOSE:The peer closed the TCP receival window, namely, the size of the peer's receival window was zero and the local end could not send data. (Started at [ULONG]:[ULONG]:[ULONG] (Hour:Minute:Second), Total times of closing the window=[ULONG])

Description

The remote end in a TCP connection closed the sliding window, which means that the value of the sliding window was zero and the local end could not send data any more.

Parameters

Parameter Name	Parameter Meaning
Started at	indicates the time when remote end in a TCP connection lastly notifies that the value of its sliding window is 0. The format is HH:MM:SS.
Total times of closing the window	indicates the times that the sliding window of the remote end in a TCP connection is not available.

Possible Causes

1. The user called the Close function to turn off the socket.

2. The TCP server received RST packets from the TCP client.

3. TCP retransmission timed out.

4. Failed to perform TCP keepalive detection.

Procedure

This log message indicates a normal situation, and no action is required.