Possible reasons for EndOfStreamException? (1 reply)

Hello,
I see the following exception in the logs:

Exception type: MySql.Data.MySqlClient.MySqlException
Exception message: Fatal error encountered during command execution.

Inner exceptions chain:

Exception type: MySql.Data.MySqlClient.MySqlException
Exception message: Fatal error encountered attempting to read the resultset.

Exception type: MySql.Data.MySqlClient.MySqlException
Exception message: Reading from the stream has failed.

Exception type: System.IO.EndOfStreamException
Exception message: Attempted to read past the end of the stream.

Stack trace:
at MySql.Data.MySqlClient.MySqlCommand.ExecuteReader(CommandBehavior behavior)
at MySql.Data.MySqlClient.MySqlCommand.ExecuteDbDataReader(CommandBehavior behavior)
at System.Data.Common.DbCommand.System.Data.IDbCommand.ExecuteReader(CommandBehavior behavior)
at System.Data.Common.DbDataAdapter.FillInternal(DataSet dataset, DataTable[] datatables, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior)
at System.Data.Common.DbDataAdapter.Fill(DataTable[] dataTables, Int32 startRecord, Int32 maxRecords, IDbCommand command, CommandBehavior behavior)
at System.Data.Common.DbDataAdapter.Fill(DataTable dataTable)
at MySql.Data.MySqlClient.ISSchemaProvider.GetTable(String sql)
at MySql.Data.MySqlClient.ISSchemaProvider.Query(String table_name, String initial_where, String[] keys, String[] values)
at MySql.Data.MySqlClient.ISSchemaProvider.GetProcedures(String[] restrictions)
at MySql.Data.MySqlClient.ISSchemaProvider.GetSchemaInternal(String collection, String[] restrictions)
at MySql.Data.MySqlClient.SchemaProvider.GetSchema(String collection, String[] restrictions)
at MySql.Data.MySqlClient.MySqlConnection.GetSchema(String collectionName, String[] restrictionValues)
at MySql.Data.MySqlClient.ProcedureCache.GetProcData(MySqlConnection connection, String spName)
at MySql.Data.MySqlClient.ProcedureCache.AddNew(MySqlConnection connection, String spName)
at MySql.Data.MySqlClient.ProcedureCache.GetProcedure(MySqlConnection conn, String spName, String cacheKey)
at MySql.Data.MySqlClient.StoredProcedure.GetParameters(String procName, DataTable& proceduresTable, DataTable& parametersTable)
at MySql.Data.MySqlClient.StoredProcedure.Resolve(Boolean preparing)
at MySql.Data.MySqlClient.MySqlCommand.ExecuteReader(CommandBehavior behavior)
at MySql.Data.MySqlClient.MySqlCommand.ExecuteNonQuery()
at RA.Common.DAL.SupTransactionAccessor.AddSupTransaction(SupTransaction supTransaction, IDbConnection conn) in C:\VCProjects\Alex\RA\RA.Common\DAL\SupTransactionAccessor.cs:line 64
...

And in a few seconds after this I see next exception:

Exception type: System.InvalidOperationException
Exception message: Connection must be valid and open.

Stack trace:
at MySql.Data.MySqlClient.MySqlCommand.CheckState()
at MySql.Data.MySqlClient.MySqlCommand.ExecuteReader(CommandBehavior behavior)
at MySql.Data.MySqlClient.MySqlCommand.ExecuteNonQuery()
at RA.Common.DAL.SupTransactionAccessor.AddSupTransaction(SupTransaction supTransaction, IDbConnection conn) in C:\VCProjects\Alex\RA\RA.Common\DAL\SupTransactionAccessor.cs:line 64
...


It seems like connection has been silently closed? What can be the reasons for EndOfStreamException? If you think the reason is broken connection - what are the possible reasons for it? (In the logs I see that the server was working without interruptions and the client machine could continue working after opening new connection).

Thank you in advance.