|
Lets assume we have these Connection Strings: ConnectionString1 = "Data Source=SomeHostname; Database=c:\\foobar.fdb;
User=SYSDBA; Password=masterkey;"; ConnectionString2 = "Data Source=192.168.0.5;
Database=c:\\foobar.fdb; User=SYSDBA; Password=masterkey;"; When connecting to a firebirdserver the .NET-Provider
currently does (in GdsConnection.cs): Assume "Data Source" is a hostname and try to
resolve it using Dns.GetHostEntry() If that did not work out (although Dns.GetHostEntry() also
takes IPs): Assume it is an IP and try to parse it using IPAddress.Parse() The problem: If you use ConnectionString2 (an IP as
DataSource) on some computers Dns.GetHostEntry() consumes a lot of time until
it realizes that its not a hostname but an IP. The solution: First assume Data Source is an IP-Adress an if
its not try to resolve it using Dns.GetHostEntry() I submitted this to the tracker: http://tracker.firebirdsql.org/browse/DNET-53 The problem with the solution: It is unsure if that might slow down connecting when using a
Hostname as Data Source. I hope IPAdress.Parse() only parses and does not do any time
consuming like looking for dns-records or something like that. Maybe someone here knows if changing the order of
IPAdress.Parse() and Dns.GetHostEntry() may impact speed or wants to help testing ;D Greetings to the mailing list, Bernd Hesse |
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