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Why does indy return unreadable data but chrome loads it fine?

I'm trying to do a GET request on one of my game server's RESTAPI. When I load it in chrome it load with the correct json response but when I try to do it with indy it just gives me a bunch of unreadable text.

URL for the request: http://129.232.180.125:28019/deaths.json

Chrome Response:

Chrome Response

Indy Reponse:

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Zô1-W¥²¾KdP¡tÇXýc--[ÛàÔ-Go¼aI4]ñôãÏǯÏ_& h¶@5Gá0Ú#!`u.éöæà¿i³ÇhFÜ]Q´µjÁ
d¼Ê%½|ÔRØ\­¡Ókbê;Â$`¹^ìX»Ó`ϢѤù»   i2S$Ýûöõ¯ÉÑ2    D(,öæÛý§ûÙ¯j\-AOÙ^&Gä£WK¥2\ÙW[%a»a\Ò' U½4ßß+¯>bV«ÏêUçq¡õÏIÜ
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SB^"ÕKªGè¸+¾ß^~$Õâ³6Tõ]2Õßr9¸%eàYYUrsJÏ`Êä³ë'£t8#®AB¨KϹëOAe9V ×Ís-£¬Ó鬺ùÜ\)µµ©±¢xÜj« ½ê(JRâÜ>\<M´@6Xd°ý~®i ÄCõBe;&©l³"¦}.uUè5(ÝE®V;BìðùôtúöðqÆÅ8~cÜ¡}{\h9Í©¡0²]Cèl¯s%qeÅô{Ø]zOöÞ|W-ÆöÎ%媫¦@çÎл[jѶÊÞÒÙq¤¸qZÛ/îÕ=KTÓ³ÿÒ=Go@Îì6*Z¯\W7¡ê!rM´'£¸ÇR­»[G%ëp"?+²q?!ÔU{n,QâsðÚ9÷Þòì³H¡#f<Î.ÛÂѲ­Ät$u\9KoËGpE9b+ NsQÏ>ÉIiÒQs8ôòVÖMó.Þ÷ex ½½îx!RNÇZH?×b@ Ó$v¥_SfçF«Q®n`|à`«T­®Ð¦©¸×5*<?qC´/ø©¿ÑJ¬ªï´´+ýÑHjiK( ;¤øÓA#mýH߬5v ¡µR
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My Code:

mmo1.Lines.Text := idhtp1.Get('http://129.232.180.125:28019/deaths.json');

Solution

  • If the server has Content-Encoding: gzip in the headers, so you must decompress the data. Here is a full & working example (the check for gzipped content is omitted):

    program SO51126032;

{$APPTYPE CONSOLE}

{$R *.res}

uses
  IdHttp,
  IdZLib,
  Classes,
  System.SysUtils;

function GetServerData(Url : String) : String;
var
  Http : TIdHttp;
  Strm : TMemoryStream;
  OutStrm : TStringStream;
begin
  Http := TIdHttp.Create(nil);
  try
    Http.HandleRedirects := True;
    Http.Request.UserAgent := 'Mozilla/5.0 (Windows NT 6.1; WOW64; rv:12.0) Gecko/20100101 Firefox/12.0';
    Http.Request.AcceptEncoding := 'gzip';
    Strm := TMemoryStream.Create;
    try
      OutStrm := TStringStream.Create(TEncoding.UTF8);
      try
        Http.Get(URL, Strm);
        Strm.Position := 0;
        if TextIsSame(Http.Response.ContentEncoding, 'gzip') then
          DecompressStream(Strm, OutStrm)
        else
          OutStrm.CopyFrom(Strm, 0);
        end;
        Result := OutStrm.DataString;
      finally
        OutStrm.Free;
      end;
    finally
      Strm.Free;
    end;
  finally
    Http.Free;
  end;
end;

begin
  try
    Writeln(GetServerData('http://129.232.180.125:28019/deaths.json')); 
  except
    on E: Exception do
      Writeln(E.ClassName, ': ', E.Message);
  end;
  Readln;
end.

    * RECOMMENDED WAY *

    Indy can do the hard work for you if you assign a TIdCompressorZlib to TIdHTTP, it will automatically detect gzipped content and decompress on the fly:

    uses
  IdHttp,
  IdCompressorZLib,
  System.SysUtils;

function GetServerData(const URL : String) : String;
var
  Http : TIdHttp;
begin
  Http := TIdHttp.Create(nil);
  try
    Http.HandleRedirects := True;
    Http.Request.UserAgent := 'Mozilla/5.0 (Windows NT 6.1; WOW64; rv:12.0) Gecko/20100101 Firefox/12.0';
    Http.Compressor := TIdCompressorZLib.Create(Http);
    Result := Http.Get(URL);
  finally
    Http.Free;
  end;
end;