LAMW and TFPHTTPClient
lazarus / 43-Android

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bobkos · 2020-03-06 09:04

Hi everyone,

I'm stuck a bit, and hope somebody can assist me. Thanks in advance.

I need to get JSON doc from remote server via HTTPS, so I've prepared
simple code to get it which is working good on my Windows running PC,
nevertheless when I'm trying to get it work on my Android application
it's breaking with exception "Hostname resolution for '%hostname%'
failed". My assumption that the problem is in HTTPS connection itself,
while HTTP execution not leading to error. So my question, is there
any way to get it work.

Code: Pascal  [Select][+][-]window.onload = function(){var x1 =
document.getElementById("main_content_section"); if (x1) { var x =
document.getElementsByClassName("geshi");for (var i = 0; i uses 
fphttpclient, fpopenssl, openssl; ... function GetReceipt:string;var 
counter,APos:integer;  AStream:TStream;  AUID:string;begin  AUID:=''; 
AStream:=TStream.Create;  with TFPHTTPClient.Create(nil) do    try   
 AddHeader('User-Agent','Mozilla/5.0 (compatible; TestApp)');     
IOTimeout:=3000;      try       
HTTPMethod('GET','https://consumer.oofd.kz/api/tickets/find-by-url?i=3
759879297&f=600300097026&s=5032.0&t=20200304T092700',AStream,[302]); 
   except on E:Exception do        Result:=e.message;      end;     
for counter:=0 to ResponseHeaders.Count-1 do        if
Pos('Location',ResponseHeaders[counter]) = 0 then Continue else begin 
        APos:=Pos('/ticket',ResponseHeaders[counter]);          AUID:=
Copy(ResponseHeaders[counter],APos,Length(ResponseHeaders[counter])-
APos+1);          Break;        end;     //AUID should be something
like this '/ticket/ce658ee5-4c10-4c33-b9e9-994ec6226099'      if
Pos('/ticket',AUID) > 0 then Result:=Get(Format('%s%s',['https://consu
mer.oofd.kz/api/tickets',AUID]));    finally     
FreeAndNil(AStream);      Free;    end;end; ...begin 
ShowMessage(GetReceipt);end. 
While looking for solution I've tried jHTTPClient, but it's seems not
suitable for my case, because the requested page redirecting to
another which is contain data. And I don't know how to handle it.

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bobkos · 2020-03-10 05:34

So far nobody has any ideas how to retrieve data thru https request
(with redirection) on androind? Or atleast how to manage redirection
with jhttpclient?

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trev · 2020-03-10 05:49

You don't mention which FPC version you are using?

Anyway, a number of SSL issues were fixed in trunk (3.3.1) which fixed
my issues in FreeBSD after a Linux user pointed me to trunk after it
fixed his issues.

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bobkos · 2020-03-10 12:14

I'm using LAMW (Laz4Android 1.8.0 + FPC 3.0.4)

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trev · 2020-03-10 12:22

Try FPC trunk (see Installing FPC from source).

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bobkos · 2020-03-10 14:33

Ok, thank you for your advice, I'll try.