TIdPOP3->Connect() doesn't return

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6 total messages Started by Miguel Gimenez Tue, 04 Dec 2007 23:47

#613

Author: Miguel Gimenez
Date: Tue, 04 Dec 2007 23:47

15 lines
1341 bytes

   I'm using TIdPOP3 with Indy 9.0.17 and BCB5. Thanks to Remy the 
diagnostics via exception is working, except in two cases where the 
Connect(5000) command doesn't ever return, hanging the application.

- If I set Port to a working non POP port (80, for example)
- If I activate SSL for a non-SSL server

   The programs works OK with a GMail account (port 995 and SSL ON), so 
I think this is not the problem.

   This cases are possible, as the users are not experts. Is there any 
way to avoid this?

TIA
Miguel Gimenez

Re: TIdPOP3->Connect() doesn't return

#614

Author: Remy Lebeau (TeamB)
Date: Wed, 05 Dec 2007 00:34

18 lines
1677 bytes

"Miguel Gimenez" <me@privacy.net> wrote in message 
news:4755e726$1@newsgroups.borland.com...

> - If I set Port to a working non POP port (80, for example)

The POP3 protocol defines a greeting command that the server is required to 
send to the client upon initial connection.  TIdPOP3::Connect() waits for 
that greeting to arrive.  Port 80, however, is an HTTP port, not a POP3 
port.  The HTTP protocol has no greeting.  So Connect() establishes a 
connection to a server but then ends up waiting for data that never arrives.

> Is there any way to avoid this?

Set the ReadTimeout property.  It is set to infinite by default.


Gambit

Re: TIdPOP3->Connect() doesn't return

#615

Author: Miguel Gimenez
Date: Wed, 05 Dec 2007 09:07

22 lines
1868 bytes

Remy Lebeau (TeamB) escribi�:
> "Miguel Gimenez" <me@privacy.net> wrote in message 
> news:4755e726$1@newsgroups.borland.com...
> 
>> - If I set Port to a working non POP port (80, for example)
> 
> The POP3 protocol defines a greeting command that the server is required to 
> send to the client upon initial connection.  TIdPOP3::Connect() waits for 
> that greeting to arrive.  Port 80, however, is an HTTP port, not a POP3 
> port.  The HTTP protocol has no greeting.  So Connect() establishes a 
> connection to a server but then ends up waiting for data that never arrives.
> 
>> Is there any way to avoid this?
> 
> Set the ReadTimeout property.  It is set to infinite by default.

I thought the timeout specified in the Connect() method was enough. Now 
it works properly, thanks again.

--
Best regards
Miguel Gimenez

Re: TIdPOP3->Connect() doesn't return

#616

Author: Miguel Gimenez
Date: Wed, 05 Dec 2007 09:25

14 lines
1372 bytes

Remy Lebeau (TeamB) wrote:
>> Is there any way to avoid this?
> 
> Set the ReadTimeout property.  It is set to infinite by default.

I thought that the Connect() timeout was enough, now the wrong port part 
works correctly.

The SSL part still hangs, I've been looking for timeouts in this 
component to no avail.

--
Best regards
Miguel Gimenez

Re: TIdPOP3->Connect() doesn't return

#617

Author: Remy Lebeau (TeamB)
Date: Wed, 05 Dec 2007 17:59

16 lines
1547 bytes

"Miguel Gimenez" <me@privacy.net> wrote in message 
news:47566e9d$1@newsgroups.borland.com...

> I thought that the Connect() timeout was enough

No, because this is not a connection issue, it is a data reading issue. 
There are separate timeouts for those issues.

> The SSL part still hangs, I've been looking for timeouts
> in this component to no avail.

There aren't any.  What is our EXACT setup when using TIdPOP3 with SSL?


Gambit

Re: TIdPOP3->Connect() doesn't return

#618

Author: Miguel Gimenez
Date: Wed, 05 Dec 2007 20:34

63 lines
2692 bytes

Remy Lebeau (TeamB) escribi�:
> "Miguel Gimenez" <me@privacy.net> wrote in message 
> news:47566e9d$1@newsgroups.borland.com...
> 
>> I thought that the Connect() timeout was enough
> 
> No, because this is not a connection issue, it is a data reading issue. 
> There are separate timeouts for those issues.
> 
>> The SSL part still hangs, I've been looking for timeouts
>> in this component to no avail.
> 
> There aren't any.  What is our EXACT setup when using TIdPOP3 with SSL?

IdPOP31:
APOP = false
ASCIIFilter = false
BoundIP = ""
BoundPort = 0
Host = "pop.solener.com"
Intercept = ""
IOHandler = UseSSL ? IdSSLIOHandlerSocket1 : NULL
MaxLineAction = maSplit
MaxLineLength = 16384
Name = "IdPOP31"
Password = "password"
Port = 110
ReadTimeout = 6000
RecvBufferSize = 32768
SendBufferSize = 32768
Tag = 0
Username = "username"

IdSSLIOHandlerSocket1:
Name = "IdSSLIOHandlerSocket1"
SocksInfo = ""
SSLOptions
   CertFile = ""
   CipherList = ""
   KeyFile = ""
   Method = sslvSSLv2
   Mode = sslmUnassigned
   RootCertFile = ""
   VerifyDepth = 0
   VerifyDirs = 0
   VerifyMode = []
Tag = 0
UseNagle = true

The program works fine with "normal servers" (port 110, no SSL) and 
Gmail (port 995, SSL).

If I set no SSL for a Gmail server I get an EIdReadTimeout exception, as 
expected.

If I set SSL for a non-SSL server, the applications hangs on 
IdPOP31->Connect().

I'm using the OpenSSL library pair from the Indy page. Maybe one of 
these libraries who halts waiting for a valid SSL packet.

Best regards
Miguel Gimenez

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