Timeout when not connecting
lazarus / 38-Networking and Web Programming

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Serge58 · 2017-08-11 22:22

Hello,
I am using the following to connect to my Arduino micro controller and
it works perfectly.

url:='http://10.0.1.4/arduino/webserver/'
httpclient:= TFPHttpClient.Create(Nil);
  try
     html:= httpclient.Get(url);
  finally
     httpclient.Free;  

However, if the board is not connected how do I cancel the request and
send a message?
Right now my program just freeze when it happens and I have to kill it
manually.
is there a timeout option that I can use?

Thanks,

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Phil · 2017-08-11 22:28

Quote from: Serge58 on August 12, 2017, 12:22:59 amis there a timeout
option that I can use?

Look at source for TFpHttpClient. It has an IOTimeout property. Maybe
that would work?

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Serge58 · 2017-08-11 23:11

Well the TFpHttpClient that I am using doesn't have this IOtimeout
property.
I there a way I can do it with a timer?  Or as soon as it places a
request it just wait for a reply?

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Phil · 2017-08-11 23:13

Quote from: Serge58 on August 12, 2017, 01:11:29 amWell the
TFpHttpClient that I am using doesn't have this IOtimeout property.

It's in FPC 3.0.2, so upgrade.

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Serge58 · 2017-08-12 14:38

Well I upgraded to the last version, Lazarus 1.6.4 and FPC 3.0.2, and
TFPHttpClient  still doesn't have a IOTimeout property.

Looking at the forum I found some notes about a opkman unit but is it
relevant?