經常出現的Connection reset by peer: 原因可能是多方面的，不過更常見的原因是：①：伺服器的併發連線數超過了其承載量，伺服器會將其中一些連線Down掉；②：客戶關掉了瀏覽器，而伺服器還在給客戶端傳送資料；③：瀏覽器端按了Stop
[10054] Connection reset by peer
Connection reset by peer is a tough one because it can be caused by so many things. In all cases, the server determines that the socket is no longer good and closes it from its side.

Read Error
Scenario: Mary couldn't make out what Joe was saying anymore, so she hung up rather than lose his messages (data).
A read error occurs when a server cannot successfully read from a user's client. Servers gather information from the client by text, setup, and other items.When the server receives an error when reading from a client, it then disconnects the user, resulting in a read error quit message.

Write Error
Scenario: Mary was trying to talk to Joe but didn't think she was getting through, so she hung rather than lose his messages (data).
A write error occurs when a server cannot successfully write to a user's client. When the server receives information, it usually responds with information of its own. When the server receives an error when writing to a client, it then disconnects the user, resulting in a write error quit message similar to the read error format.

Ping Timeout Error
Scenario: Mary, having been raised in a household with too many kids and always craving attention, keeps asking to make sure that Joe is still on the line and listening. If he doesn't reply fast enough to suit her, she hangs up.
Servers automatically ping users at a preset time. The reason for this is to ensure the client is still connected to the server. When you see "PING? PONG!" results in your status window, it means the server has pinged your client, and it has responded back with a pong to ensure the server that you are still connected. When this does not happen and you disconnect without the server's knowledge, the server will automatically disconnect the user when it does not receive a response, resulting in a ping timeout. Ping timeouts occur to EVERYONE.

Broken pipe Error
Scenario: Mary had picked up a sticky note with a message she needed to relay to Joe, but somehow between her hand and her mouth, the message got misplaced. Mary was trying to talk to Joe but didn't think she was getting through, so she hung up rather than lose his messages (data).
A broken pipe error occurs when the server knows it has a message but can't seem to use its internal data link to get the data out to the socket.

Miscellaneous
Scenario: Lots of other reasons; perhaps the operator broke in and gave Mary a message that made her doubt the validity of the call so she hung up.