Dismiss Notice

REGISTRATION IS AFTER ADMIN ACTIVATION

DONATIONS WITH PAYPAL CLICK TO BUTTON

1 MONTH VIP - 5$; 3 MONTHS VIP - 10$; 6 MONTHS VIP - 20$; 1 YEAR VIP - 30$; 2 YEARS VIP - 50$; GOLD USER FOR LIFE VIP - 150$

DONATIONS WITH Bitcoin Address:3NRs3CK3fhXifrNYxHEZKpETDd9vNLMsMD

Dismiss Notice
The registration is approved by the Administrator. It takes about 1 day to approve your registration
Dismiss Notice
For open hidden message no need write thanks, thank etc. Enough is click to like button on right side of thread.

SOAP and REST – Using GZip with Delphi client

Discussion in 'Delphi Programming' started by N0body, Apr 7, 2014.

  1. N0body
    Online

    N0bodyN0body is a Verified Member DelphiFan Administrator Staff Member DF Staff

    We are deciding between SOAP and REST. I’ve implemented client applications in Delphi using GZip. It is a very simple implementation and it brings a great result. The larger the volume of data, greater the difference using GZip compression. The bandwidth is also a factor that influences a lot.  Let’s see the implementations.

    REST with GZIP

    Implementation of compression with REST is extremely simple. It’s just a matter of correctly setting the “Compressor” attribute of the  TIDHttp component. I’m using TIdCompressorZLib.

    Code:
    IdHttp := TIdHTTP.Create(nil);
    IdHttp.Compressor := TIdCompressorZLib.Create(IdHttp);

    NOTE: This does not work in Delphi XE2. Access violation occurs. Works in XE3.

    SOAP with GZIP

    Implementation with SOAP is a bit more complicated. For my tests I used the THTTPrio component events.

    Code:
    procedure HTTPRIOHTTPWebNode1BeforePost(const HTTPReqResp: THTTPReqResp; 
      Data: Pointer);
    const
      INTERNET_OPTION_HTTP_DECODING = 65;
      contentEncodingHeader = 'Accept-Encoding: gzip, deflate';
    var
      Flag: LongBool;
    begin
      Flag := True;
      HttpAddRequestHeaders(Data, PChar(contentEncodingHeader), 
        Length(contentEncodingHeader), HTTP_ADDREQ_FLAG_ADD);
      InternetSetOption(Data, INTERNET_OPTION_HTTP_DECODING, 
        PChar(@Flag), SizeOf(Flag));
    end;

    Benchmarks

    These tests were done in order to compare the implementation of SOAP and REST.  I used the framework developed by a brazilian programmer, Fabricio Colombo, the Delphi REST Client API. Tests were performed with a bandwidth limited to 512 Kbps. Information is in milliseconds.

    [​IMG]

    [​IMG]

    The difference with GZip is big. Do not be fooled by the chart! It’s a logarithmic scale.
     

Share This Page

Laws
Our website, law, laws, copyright and aims to be respectful of individual rights. Our site, as defined in the law of 5651 serves as a provider of space. According to the law, contrary to the law of site management has no obligation to monitor content. Therefore, our site has adopted the principle of fit and remove. Works are subject to copyright laws and is shared in a manner that violated their legal rights, or professional associations, rights holders who, adsdelphi@gmail.com I can reach us at e-mail address. Complaints considered to be infringing on the examination of the content will be removed from our site.
Donate Help To Us and Be VIP
DONATIONS WITH PAYPAL CLICK TO BUTTON
6 MONTHS VIP - 20$; 1 YEAR VIP - 30$; 2 YEARS VIP - 50$; GOLD USER FOR LIFE VIP - 150$
Social Block