"Connection closed gracefully" errors
I am using the TIdHTTP component from Indy 10.5.1 with Delphi 2007. Occasionally my app will be working away and I will get a "Connection closed gracefully" exception during the Post method for no apparent reason. That is, there are no other errors reported. Once, this error is reported, all subsequent attempts to Post will return the same error. The only way to get the application running again is to shut it down and restart it. BTW, I always call the Close method after each Post, successful or not. How can I recover from this error condition?
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Stephen
8/26/2009 6:02:21 PM
embarcadero.delphi.winsock
1874 articles. 
2 followers.
3 Replies
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"Stephen Boyd" <steve.boyd@amtelecom.net> wrote in message news:154560@forums.codegear.com... > I am using the TIdHTTP component from Indy 10.5.1 with Delphi 2007. The current version of Indy 10 is 10.5.6. Please upgrade and see if the problem continues. > Occasionally my app will be working away and I will get a "Connection > closed gracefully" exception during the Post method for no apparent > reason. It means the server actively closed the connection on its end while your end was stilling read/writing data. > Once, this error is reported, all subsequent attempts to Post will return > the same error. You need to disconnect on your end first. -- Remy Lebeau (TeamB)
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Remy
8/26/2009 9:59:38 PM
Remy Lebeau (TeamB) wrote:
>
> The current version of Indy 10 is 10.5.6. Please upgrade and see if the
> problem continues.
>
OK
>> Occasionally my app will be working away and I will get a "Connection
>> closed gracefully" exception during the Post method for no apparent
>> reason.
>
> It means the server actively closed the connection on its end while your end
> was stilling read/writing data.
>
I sort of knew this.
>> Once, this error is reported, all subsequent attempts to Post will return
>> the same error.
>
> You need to disconnect on your end first.
>
What do you mean by 'disconnect'? I already call
TIdHttp.IOHandler.Close. Is there something else that I need to be
doing to disconnect?
Here is the code that I use to do the post.
function Post(const app: String; const params: String): String;
var
url : String;
strm : TMemoryStream;
begin
url := Format('%s/%s', [FUrl, app]);
strm := TMemoryStream.Create;
try
strm.Write(PChar(params)^, Length(params));
HTTP.IOHandler.ReadTimeout := FTimeout;
HTTP.IOHandler.ConnectTimeout := FTimeout;
if (FTraceOn) then
WriteTrace('>> %s', [params]);
try
Result := HTTP.Post(url, strm);
finally
HTTP.IOHandler.Close; // Force socket closed to avoid
10054 errors
end;
if (FTraceOn) then
WriteTrace('<< %s', [Result]);
finally
strm.Free;
end;
end;
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Stephen
8/27/2009 1:38:41 PM
"Stephen Boyd" <steve.boyd@amtelecom.net> wrote in message news:155033@forums.codegear.com... > What do you mean by 'disconnect'? I already call > TIdHttp.IOHandler.Close. Is there something else > that I need to be doing to disconnect? Use TIdHTTP inherits a Disconnect() method from TIdTCPConnection. Use that instead. Do not call TIdIOHandler.Close() directly. -- Remy Lebeau (TeamB)
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Remy
8/27/2009 5:31:28 PM
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