SocketException from code not caught in try catch or Application_Err or

[mc]

I have a function (shown below) that I call to check if a server is present. when a server is
present, everything is ok. however when it fails. I get an SocketException fired. On my development
machine all seems to work and the exception is fired and caught. however on my production server the
exception fires, it's not caught by the try catch and it's also not caught in my application_err or
handler in Global.asax. Can anyone shed any light on this?

private bool CheckServer(str ing p){
try{
using (Socket s = new Socket(AddressF amily.Internetw ork, SocketType.Stre am, ProtocolType.Tc p)){
IPEndPoint iep = new IPEndPoint(DNS. GetHostEntry(p) .AddressList[0], 80);
s.Connect(iep);
return true;
}
}
catch{
return false;
}
}

TIA
MC

[Aidy]

It might be something to do with the fact that you're using "using" inside a
try block. Try it without the "using".

"mc" <mc@community.n ospamwrote in message
news:47******** @mail.hmgcc.gov .uk...

>I have a function (shown below) that I call to check if a server is
present. when a server is present, everything is ok. however when it fails.
I get an SocketException fired. On my development machine all seems to work
and the exception is fired and caught. however on my production server the
exception fires, it's not caught by the try catch and it's also not caught
in my application_err or handler in Global.asax. Can anyone shed any light
on this?

private bool CheckServer(str ing p){
try{
using (Socket s = new Socket(AddressF amily.Internetw ork,
SocketType.Stre am, ProtocolType.Tc p)){
IPEndPoint iep = new IPEndPoint(DNS. GetHostEntry(p) .AddressList[0],
80);
s.Connect(iep);
return true;
}
}
catch{
return false;
}
}

TIA
MC

[=?Utf-8?B?YnJ1Y2UgYmFya2Vy?=]

most likely the page request is timing out before the socket connection
timeout. explicity set the values.

-- bruce (sqlwork.com)
"mc" wrote:

I have a function (shown below) that I call to check if a server is present. when a server is
present, everything is ok. however when it fails. I get an SocketException fired. On my development
machine all seems to work and the exception is fired and caught. however on my production server the
exception fires, it's not caught by the try catch and it's also not caught in my application_err or
handler in Global.asax. Can anyone shed any light on this?

private bool CheckServer(str ing p){
try{
using (Socket s = new Socket(AddressF amily.Internetw ork, SocketType.Stre am, ProtocolType.Tc p)){
IPEndPoint iep = new IPEndPoint(DNS. GetHostEntry(p) .AddressList[0], 80);
s.Connect(iep);
return true;
}
}
catch{
return false;
}
}

TIA
MC

[mc]

No change! still broke.
Aidy wrote:

It might be something to do with the fact that you're using "using" inside a
try block. Try it without the "using".

"mc" <mc@community.n ospamwrote in message
news:47******** @mail.hmgcc.gov .uk...

>>I have a function (shown below) that I call to check if a server is
present. when a server is present, everything is ok. however when it fails.
I get an SocketException fired. On my development machine all seems to work
and the exception is fired and caught. however on my production server the
exception fires, it's not caught by the try catch and it's also not caught
in my application_err or handler in Global.asax. Can anyone shed any light
on this?

private bool CheckServer(str ing p){
try{
using (Socket s = new Socket(AddressF amily.Internetw ork,
SocketType.St ream, ProtocolType.Tc p)){
IPEndPoint iep = new IPEndPoint(DNS. GetHostEntry(p) .AddressList[0],
80);
s.Connect(iep);
return true;
}
}
catch{
return false;
}
}

TIA
MC

[Steven Cheng[MSFT]]

Hi MC,

It is also likely that there is something related to the account running
the application. Is there any proxy that requires to visit the certain
remote server/site? You can try switch the ASP.NET process to a domain
account to see whether it works.

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead

This posting is provided "AS IS" with no warranties, and confers no rights.
--------------------

>Date: Tue, 18 Dec 2007 17:26:43 +0000
From: mc <mc@community.n ospam>
Newsgroups: microsoft.publi c.dotnet.framew ork.aspnet
Subject: Re: SocketException from code not caught in try catch or

Application_Err or

>
No change! still broke.
Aidy wrote:

>It might be something to do with the fact that you're using "using"

inside a

>try block. Try it without the "using".

"mc" <mc@community.n ospamwrote in message
news:47******* *@mail.hmgcc.go v.uk...

>>>I have a function (shown below) that I call to check if a server is
present. when a server is present, everything is ok. however when it

fails.

>>>I get an SocketException fired. On my development machine all seems to

work

>>>and the exception is fired and caught. however on my production server

the

>>>exception fires, it's not caught by the try catch and it's also not

caught

>>>in my application_err or handler in Global.asax. Can anyone shed any

light

>>>on this?

private bool CheckServer(str ing p){
try{
using (Socket s = new Socket(AddressF amily.Internetw ork,
SocketType.S tream, ProtocolType.Tc p)){
IPEndPoint iep = new

IPEndPoint(DNS. GetHostEntry(p) .AddressList[0],

>>>80);
s.Connect(iep);
return true;
}
}
catch{
return false;
}
}

TIA
MC

[Steven Cheng[MSFT]]

Hi MC,

Have you got progress on this? If still need any help, welcome to post here.

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead
This posting is provided "AS IS" with no warranties, and confers no rights.
--------------------

>Organization : Microsoft
Date: Wed, 19 Dec 2007 09:55:58 GMT
Subject: Re: SocketException from code not caught in try catch or

Application_Err or

>
Hi MC,

It is also likely that there is something related to the account running
the application. Is there any proxy that requires to visit the certain
remote server/site? You can try switch the ASP.NET process to a domain
account to see whether it works.

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead

This posting is provided "AS IS" with no warranties, and confers no rights.