Delphi Indy login and download a file -
problem cant download file (cause im not logged). can login, nothing more. delphi version: xe2, indy version: 10.5.8.0 (also tested on delphi xe4 newest indy). there 1 cookie 1970r date. help.
code: (login , password real)
var idhttp: tidhttp; request: tstringlist; response: tmemorystream; file: tmemorystream; begin try response := tmemorystream.create; try request := tstringlist.create; try request.add('user[login]=1212test1212'); request.add('user[password]=test1212'); idhttp := tidhttp.create; file := tmemorystream.create; try idhttp.allowcookies := true; idhttp.cookiemanager:=form1.idcookiemanager1; idhttp.handleredirects := true; idhttp.request.contenttype := 'application/x-www-form-urlencoded'; idhttp.post('http://www.twitch.tv/login', request, response); idhttp.get('http://www.twitch.tv/broadcast/fmle3_config',file); file.savetofile('c:\aaa.xml'); idhttp.free; ms.free; end; request.free; end; response.free; end; except on e: exception showmessage(e.message); end; end; http analyzer logs:
(status-line):http/1.1 302 moved temporarily cache-control:no-cache, no-store, must-revalidate pragma:no-cache set-cookie:feature_bucket=83; domain=.twitch.tv; path=/ set-cookie:name=1212test1212; domain=.twitch.tv; path=/; expires=tue, 06-aug-2013 19:20:52 gmt set-cookie:_twitch_session_id=16d9fc8368fe22701324c7ce39c9f668; domain=.twitch.tv; path=/; expires=wed, 24-jul-2013 07:20:52 gmt; httponly set-cookie:unique_id=a5b16cf36861154f9dd118e673fd4aa0; domain=.twitch.tv; path=/ set-cookie:persistent=46516706_1212test1212_35ptd94szs8ysrpfcckrcx21t; domain=.twitch.tv; path=/; expires=tue, 06-aug-2013 19:20:52 gmt; httponly set-cookie:login=1212test1212; domain=.twitch.tv; path=/; expires=tue, 06-aug-2013 19:20:52 gmt set-cookie:last_login=tue+jul+23+19%3a20%3a52+utc+2013; domain=.twitch.tv; path=/; expires=tue, 06-aug-2013 19:20:52 gmt set-cookie:language=en; domain=.twitch.tv; path=/; expires=sat, 23-jul-2033 19:20:52 gmt set-cookie:api_token=daa32f51e6d015daf9c7a1949d1ef9e0; domain=.twitch.tv; path=/; expires=tue, 06-aug-2013 19:20:52 gmt content-length:144 content-type:text/html location:http://www.twitch.tv/ server:nginx front-end-https:off p3p:cp="cao psa our" status:302 found x-geo:pl x-rack-cache:invalidate, pass x-request-id:a829998aa94c51788ec9b504656639f3 x-runtime:0.272887 x-ua-compatible:ie=edge,chrome=1 date:tue, 23 jul 2013 19:20:52 gmt connection:close (status-line):http/1.1 200 ok cache-control:no-cache, no-store, must-revalidate pragma:no-cache set-cookie:_twitch_session_id=860dc07ccd1dd937f1cb6adfc84a7f14; domain=.twitch.tv; path=/; expires=wed, 24-jul-2013 07:20:53 gmt; httponly set-cookie:persistent=; domain=.twitch.tv; path=/; expires=thu, 01-jan-1970 00:00:00 gmt content-length:59850 content-type:text/html; charset=utf-8 server:nginx front-end-https:off status:200 ok x-geo:pl x-rack-cache:invalidate, pass x-request-id:2557352c302a3eddfe9080882aaa3028 x-runtime:0.301446 x-ua-compatible:ie=edge,chrome=1 date:tue, 23 jul 2013 19:20:53 gmt connection:close (status-line):http/1.1 302 moved temporarily cache-control:must-revalidate, no-cache, no-store, private pragma:no-cache set-cookie:_twitch_session_id=860dc07ccd1dd937f1cb6adfc84a7f14; domain=.twitch.tv; path=/; expires=wed, 24-jul-2013 07:20:54 gmt; httponly content-length:150 content-type:text/html location:http://www.twitch.tv/signup server:nginx front-end-https:off status:302 found x-geo:pl x-rack-cache:miss x-request-id:b35e5b998a633b80cfb1f53373e5627a x-runtime:0.029409 x-ua-compatible:ie=edge,chrome=1 date:tue, 23 jul 2013 19:20:54 gmt connection:keep-alive 
you not logging in correct url. http://www.twitch.tv/login html login form users fill out in web browser , submit real login url, https://secure.twitch.tv/user/login instead. if @ html login form, see that, several hidden form fields need submit not submitting.
also, because actual login url using https, need attach ssl iohandler tidhttp, such tidssliohandlersocketopenssl.
and complicate things, required authenticity_token value dynamically generated when http://www.twitch.tv/login requested, need first download html login form, manually parse out token value, , finish login submission.
try this:
var idhttp: tidhttp; idssl: tidssliohandlersocketopenssl; html, authtoken: string; request: tstringlist; file: tmemorystream; begin try idhttp := tidhttp.create; try idssl := tidssliohandlersocketopenssl.create(idhttp); idhttp.iohandler := idssl; idhttp.allowcookies := true; idhttp.cookiemanager := form1.idcookiemanager1; idhttp.handleredirects := true; html := idhttp.get('http://www.twitch.tv/login'); authtoken := ...; // parse html extract authenticity_token value... request := tstringlist.create; try request.add('utf8=✓'); request.add('authenticity_token=' + authtoken); request.add('redirect_on_login=http://www.twitch.tv/'); request.add('embed_form=false'); request.add('user[login]=1212test1212'); request.add('user[password]=test1212'); idhttp.post('https://secure.twitch.tv/user/login', request, nil, indyutf8encoding); request.free; end; file := tmemorystream.create; try idhttp.get('http://www.twitch.tv/broadcast/fmle3_config', file); file.savetofile('c:\aaa.xml'); file.free; end; idhttp.free; end; except on e: exception showmessage(e.message); end; end; with said, because login form performs redirect specified url when login successful, might try shorter approach avoid 1 roundtrip:
var idhttp: tidhttp; idssl: tidssliohandlersocketopenssl; html, authtoken: string; request: tstringlist; file: tmemorystream; begin try idhttp := tidhttp.create; try idssl := tidssliohandlersocketopenssl.create(idhttp); idhttp.iohandler := idssl; idhttp.allowcookies := true; idhttp.cookiemanager := form1.idcookiemanager1; idhttp.handleredirects := true; html := idhttp.get('http://www.twitch.tv/login'); authtoken := ...; // parse html extract authenticity_token value... request := tstringlist.create; try request.add('utf8=✓'); request.add('authenticity_token=' + authtoken); request.add('redirect_on_login=http://www.twitch.tv/broadcast/fmle3_config'); request.add('embed_form=false'); request.add('user[login]=1212test1212'); request.add('user[password]=test1212'); file := tmemorystream.create; try idhttp.post('https://secure.twitch.tv/user/login', request, file, indyutf8encoding); file.savetofile('c:\aaa.xml'); file.free; end; request.free; end; idhttp.free; end; except on e: exception showmessage(e.message); end; end;
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