How to detect the disconnection of a server?

As all the examples available in websites, I applied the following structure: I can detect the disconnection when the remove server closes its server program. But if I unplug the ethernet cable, the send function still return positive values rather than -1.

What does it mean to feel disconnected from God?

“I feel Disconnected from God?” “I am Stressed and Depressed?” “Where is God?” “Did you know connecting with God is just like riding a bicycle?” Sometimes like this broken bicycle in the picture, we do not feel very connected to God. We feel broken down and beat up and sometimes feeling somewhat useless.

What does it mean when outlook is disconnected from the server?

Outlook is disconnected You might find out that your Outlook has been disconnected from the server. That will be visible in the status bar in the bottom of the screen as shown below. This is probably due to a temporary hiccup in your connectivity to the network/VPN.

When does the SEND function return an error?

Therefore send can only return an error if: The connection is clearly invalid, for example it hasn’t been established or has already been terminated in some way (FIN, RST, timeout – see below) The main point is that send doesn’t send anything and therefore its return code doesn’t tell you anything about data actually reaching the other side.

As all the examples available in websites, I applied the following structure: I can detect the disconnection when the remove server closes its server program. But if I unplug the ethernet cable, the send function still return positive values rather than -1.

Outlook is disconnected You might find out that your Outlook has been disconnected from the server. That will be visible in the status bar in the bottom of the screen as shown below. This is probably due to a temporary hiccup in your connectivity to the network/VPN.

Therefore send can only return an error if: The connection is clearly invalid, for example it hasn’t been established or has already been terminated in some way (FIN, RST, timeout – see below) The main point is that send doesn’t send anything and therefore its return code doesn’t tell you anything about data actually reaching the other side.

When does a TCP connection declare a connection dead?

The main point is that in the case of an interruption TCP will declare a connection dead only after a seriously large period of silence (on Linux it does something like 15 retries – more than 5 minutes). One way to solve this is to implement some acknowledgement mechanism in your application.