Core – Warning system time changed by -*** seconds
The system time has been changed either by user interaction, or by NTP adjustment.
If the adjustment is more than 1 second and was not initiated by user interaction, verify that the Server has consistent connection to its NTP server. If the NTP server is accessible by a hostname, rather than IP address, verify that the Servers DNS is accessible.
*** EWOULDBLOCK – 143 ***
The socket is non-blocking, but the called function would block.
This error is detected when a requested operation is not ready to be done, but the socket is set to a non-blocking mode. select can be used to wait with timeout for the operation to become ready.
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*** ETIMEDOUT – 140 ***
Timeout.
An operation such as connect, recv or send timed out. For TCP, this error could occur during a send operation if the remote host is not responding with acknowledgments. This could also occur if the remote host is not responding to an ARP request.
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*** ENOTSOCK – 130 ***
Invalid socket descriptor.
An invalid socket descriptor was passed to an API function. The socket descriptor returned by calls to socket or accept needs to be passed to bind/connect/send, etc.
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*** ENOTCONN – 128 ***
Socket is not connected.
This error occurs when an operation such as send or recv was performed on a socket which was in an invalid state for the attempted operation.
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*** ENETUNREACH – 125 ***
Network unreachable (keep alive failed).
This error occurs when keep alive closes a TCP socket due to the remote host not responding to keep alive packets.
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*** ENETDOWN – 124 ***
Network is down.
This error is reported if a send times out or the network is unable to transmit.
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