Need help for Error - Exception from HRESULT: 0x800A0057

[remya1000]

i'm using VB.NET 2003 application program.

i'm using WinSock in this program. on Page_Load, i used this code

        winsock1.Close()
        winsock1.LocalPort = 1223
        winsock1.Bind()

when i run this program i'm getting .net error. error i'm getting is

See the end of this message for details on invoking
just-in-time (JIT) debugging instead of this dialog box.

************** Exception Text **************
System.Reflecti on.TargetInvoca tionException: Exception has been thrown by the target of an invocation. ---> System.Runtime. InteropServices .COMException (0x800A0057): Exception from HRESULT: 0x800A0057
at MSWinsockLib.IM SWinsockControl .Bind(Object LocalPort, Object LocalIP)
--- End of inner exception stack trace ---

if anyone have anyidea what this error means, then please help me... i search this error, but couldn't find any help. can you please help me to figure out what this error means...

thank in advance.

[Plater]

Well I don't know what the COM error you are getting is, but I would suggest trying to use .NET objects. At least that way you might get a meaningful answer.


Also, you appear to be making a webapplication, you are aware that the socket code yo uare trying to run will happen on the SERVER and not the CLIENT right?

[remya1000]

thanks for for your reply...

this program is used by couple of our clients. for everyone it works fine, only 1 client getting this .NET error. and for the client who gets this error, this program works fine for long time and they said all of the sudden now this .net error start pop up.

See the end of this message for details on invoking
just-in-time (JIT) debugging instead of this dialog box.

************** Exception Text **************
System.Reflecti on.TargetInvoca tionException: Exception has been thrown by the target of an invocation. ---> System.Runtime. InteropServices .COMException (0x800A0057): Exception from HRESULT: 0x800A0057
at MSWinsockLib.IM SWinsockControl .Bind(Object LocalPort, Object LocalIP)
--- End of inner exception stack trace ---

to double check which line makes this error, i added some logs

          gLog.Write("1")
        winsock1.Close()
         gLog.Write("2")
        winsock1.LocalPort = 1223
         gLog.Write("3")
        winsock1.Bind()
         gLog.Write("4")

and when i checked the log after running the program. the log contain

1
2
3

after that .net error is showing.

so i changed winsock1.Close( ) at the beginning and tried

         gLog.Write("1")
        winsock1.LocalPort = 1223
        gLog.Write("2")
        winsock1.Bind()
        gLog.Write("3")

no change.. same error at same line.

so i try changing the port number and tried

         gLog.Write("1")
        winsock1.Close()
         gLog.Write("2")
        winsock1.LocalPort = 1227
         gLog.Write("3")
        winsock1.Bind()
        gLog.Write("4")

no change.. same error at same line.

if anyone have anyidea what this error means, then please help me... i search this error, but couldn't find any help. can you please help me to figure out what this error means...

thank in advance.

[Plater]

Well Bind() is probably failing because the port is in use, which stands to reason if its running a second time.

You wrote that this is a 2003 application, but you said "page_load( )", is this a web application or a windows application?

[remya1000]

yes, Bind() is failing. so i tried changing the port number. but same error same line.

yes, its VB.NET 2003 application. its windows application. i'm sorry i made a mistake while typing. its not "Page_load" , its "Form_Load" . on Form_Load, i have these codes.

[Plater]

Hmm, is it possible that that user has some special firewall/security settings on their PC that don't allow you to bind port?

I still recomend you stop using outdated controls in .NET applications and investigate System.Net.Sock ets.Socket and the derrived classes (TcpClient and in this case, TcpListener)