Reasons of "An existing connection was forcibly closed by the remote host" ?

[Pavel Bazanov]

Hello,
Once in a few days I see System.Net.Sockets.SocketException thrown, saying "An existing connection was forcibly closed by the remote host".

I don't understand the reasons for this exception. Our mysql server is not being shutdown at that time, clients and the server are in the same small local network.

So I want to ask the developers - what are the most probable reasons for this exception?

Here is a stack trace from the logs:


Exception type: System.IO.IOException
Exception message: Unable to write data to the transport connection: An existing connection was forcibly closed by the remote host.

Inner exception type: System.Net.Sockets.SocketException
Inner exception message: An existing connection was forcibly closed by the remote host

Stack trace:
at MyNetworkStream.HandleOrRethrowException(Exception e)
at MyNetworkStream.Write(Byte[] buffer, Int32 offset, Int32 count)
at MySql.Data.MySqlClient.TimedStream.Write(Byte[] buffer, Int32 offset, Int32 count)
at MySql.Data.MySqlClient.MySqlStream.SendPacket(MySqlPacket packet)
at MySql.Data.MySqlClient.NativeDriver.ExecutePacket(MySqlPacket packetToExecute)
at MySql.Data.MySqlClient.NativeDriver.SendQuery(MySqlPacket queryPacket)
at MySql.Data.MySqlClient.Driver.SendQuery(MySqlPacket p)
at MySql.Data.MySqlClient.Statement.ExecuteNext()
at MySql.Data.MySqlClient.PreparableStatement.ExecuteNext()
at MySql.Data.MySqlClient.PreparableStatement.Execute()
at MySql.Data.MySqlClient.MySqlCommand.ExecuteReader(CommandBehavior behavior)
at MySql.Data.MySqlClient.MySqlCommand.ExecuteNonQuery()
at RA.WinForms.CreateBoxForm.SaveToDB(MySqlCommand command) in C:\VCProjects\Alex\RA\RA\WinForms\CreateBoxForm.cs:line 236



I tried to search all over the Internet to understand the reason but with no luck.