Thanks. I  will try & follow it. 
What i did is , tried writing the script(mentioned above) to post a review 
request which is failing of xyz reason. So thought of using HTTP::Recorder 
to get the script of posting a review request. But again facing issues in 
that.

curl command which worked once -
curl   -k -H "Basic YWRtaW46YWRtaW4=" -X POST  -d "{\"repository_id\": 
"cvsrepo",\"repository_path\":":pserver:kapila:kapila123@svn:/opt/cvsroot",\"username\":"kapila",\"password\":"kapila123",\"submit-as\":"kapila"}"
  
"http://codereview.xyz.com/r/new

Would be great if you can share your script to give quick & better 
understanding.

On Tuesday, February 26, 2013 2:08:54 PM UTC+5:30, Gavin Main wrote:
>
> After a bit of fiddling and research I found that the LWP and 
> HTTP::Cookies modules worked for me. Have a look at the documentation on 
> CPAN
>
> http://search.cpan.org/~gaas/HTTP-Cookies-6.01/lib/HTTP/Cookies.pm
>
> This link was also very helful:
> http://lwp.interglacial.com/ch11_01.htm
>
>
> Basically I wanted my post-commit hook to close out an associated review 
> on Reviewboard. So I wrote two subroutines to do that. The first generated 
> the cookie:
> - create the cookie file
> - issue the get request with HTTP::Request
> - authenticate with authorization_basic
> - extract the cookie
> - return hash
>
> Then I passed the cookie hash to another subroutine which issued my PUT 
> request with the information inside the cookie hash.
>
> Cheers,
> Gavin
>
>
> On Monday, 25 February 2013 21:25:13 UTC+8, cmuser wrote:
>>
>> i have tried to built like this,but still not working
>>
>> #!/usr/local/bin/perl
>>
>> use LWP::UserAgent;
>> use MIME::Base64;
>>
>> $url="http://codereview.xyz.com/api/review-requests/";;
>> $newurl="http://codereview.xyz.com/r/new/";;
>> $user="admin";
>> $pwd="admin";
>>
>> $text="$user:$pwd";
>> $text = encode_base64($text);
>> #print "Encoded text: $text\n";
>> %param =(
>>         "repository_id" =>"cvsrepo",
>>         "repository_path" =>":pserver:user:pwd\@svn:/opt/cvsroot",
>>         "username" => "admin",
>>         "password" => "admin",
>>         "submit-as" => "username",
>>         );
>>    my $ua = LWP::UserAgent->new;
>>     $ua->timeout(TIMEOUT);
>>     $ua->protocols_allowed(['http', 'https']);
>>     $ua->default_header('Basic' => $text);
>>     $ua->credentials($newurl,$user,$pwd);
>>
>>         $resp = $ua->get($url);
>>         print($resp->status_line(), "\n");
>>
>> print("Add handler:\n");
>>         $ua->add_handler( response_header => sub { print "HANDLER\n"; }, 
>> %param);
>>         print $ua->handlers('response_header', $resp)."\n";
>> push @{ $ua->requests_redirectable }, 'POST';
>> print $ua->show_progress."\n";
>> my $response = $ua->post($newurl,%param);
>>
>>  if ($response->is_success) {
>>      print $response->decoded_content;
>>  }
>>  else {
>>      die $response->status_line;
>>  }
>>
>>
>>
>>
>> On Friday, August 10, 2012 2:56:12 PM UTC+5:30, Gavin Main wrote:
>>>
>>> Hi Jeff, did you ever get this resolved? I am facing a similar issue.
>>>
>>> Christian, I am loving Reviewboard. Thank You!!!
>>>
>>> Cheers,
>>> Gav
>>>
>>> On Friday, 22 October 2010 02:06:16 UTC+8, Jeff wrote:
>>>>
>>>> I'm trying to write an svn pre-commit hook against a totally new 
>>>> installation of reviewboard 1.5 (upgraded from the previous version, 
>>>> but never really used). 
>>>>
>>>> As far as I can tell from the documentation, the json login page isn't 
>>>> used anymore, and I just use basic HTTP authentication. 
>>>>
>>>> My perl code looks like this: 
>>>>
>>>> #!/usr/bin/perl 
>>>> use LWP::UserAgent; 
>>>>
>>>> my $ua = LWP::UserAgent->new; 
>>>> #$ua->credentials("$rbhost:80","Web API",'user' => 'password'); 
>>>>
>>>> my $req = HTTP::Request->new(GET => "http://reviewboard.local.com/ 
>>>> rboard/api/review-requests/93/last-update/<http://reviewboard.local.com/rboard/api/review-requests/93/last-update/>");
>>>>  
>>>>
>>>> $req->authorization_basic('user', 'password'); 
>>>>
>>>> my $res = $ua->request($req); 
>>>> print $res->as_string; 
>>>>
>>>>
>>>> I've tried both the useragent credential and the request- 
>>>> >authorization_basic. 
>>>>
>>>> The result I get back is: 
>>>>
>>>>
>>>> HTTP/1.1 401 UNAUTHORIZED 
>>>> Cache-Control: max-age=0 
>>>> Connection: close 
>>>> Date: Thu, 21 Oct 2010 17:53:43 GMT 
>>>> ETag: "3818aa0b0928af747aebc006814783fe" 
>>>> Server: Apache/2.2.3 (CentOS) 
>>>> Vary: Cookie,Accept-Language 
>>>> WWW-Authenticate: Basic realm="Web API" 
>>>> Content-Language: en-us 
>>>> Content-Length: 70 
>>>> Content-Type: application/json 
>>>> Expires: Thu, 21 Oct 2010 17:53:43 GMT 
>>>> Last-Modified: Thu, 21 Oct 2010 17:53:43 GMT 
>>>> Client-Date: Thu, 21 Oct 2010 17:53:43 GMT 
>>>> Client-Peer: 10.20.30.183:80 
>>>> Client-Response-Num: 1 
>>>>
>>>> {"stat": "fail", "err": {"msg": "You are not logged in", "code": 103}} 
>>>>
>>>>
>>>>
>>>> If I try and hit the same page in an web browser after authenticating, 
>>>> I get a 500 error and an email post at the end of this message. 
>>>>
>>>> What am I doing wrong? Is there any example perl code that hit's the 
>>>> new API?  I assume the existing stuff that I'm finding on the net 
>>>> won't work anymore. 
>>>>
>>>>
>>>> Traceback (most recent call last): 
>>>>
>>>>   File "/usr/local/reviewboard/python/Django-1.2.1-py2.7.egg/django/ 
>>>> core/handlers/base.py", line 100, in get_response 
>>>>     response = callback(request, *callback_args, **callback_kwargs) 
>>>>
>>>>   File "/usr/local/reviewboard/python/Django-1.2.1-py2.7.egg/django/ 
>>>> views/decorators/cache.py", line 70, in _wrapped_view_func 
>>>>     add_never_cache_headers(response) 
>>>>
>>>>   File "/usr/local/reviewboard/python/Django-1.2.1-py2.7.egg/django/ 
>>>> utils/cache.py", line 116, in add_never_cache_headers 
>>>>     patch_response_headers(response, cache_timeout=-1) 
>>>>
>>>>   File "/usr/local/reviewboard/python/Django-1.2.1-py2.7.egg/django/ 
>>>> utils/cache.py", line 105, in patch_response_headers 
>>>>     response['ETag'] = '"%s"' % 
>>>> md5_constructor(response.content).hexdigest() 
>>>>
>>>>   File "/usr/local/reviewboard/python/Djblets-0.6.4-py2.7.egg/djblets/ 
>>>> webapi/core.py", line 273, in _get_content 
>>>>     content = adapter.encode(self.api_data, request=self.request) 
>>>>
>>>>   File "/usr/local/reviewboard/python/Djblets-0.6.4-py2.7.egg/djblets/ 
>>>> webapi/core.py", line 119, in encode 
>>>>     self.__encode(o, *args, **kwargs) 
>>>>
>>>>   File "/usr/local/reviewboard/python/Djblets-0.6.4-py2.7.egg/djblets/ 
>>>> webapi/core.py", line 136, in __encode 
>>>>     self.__encode(value, *args, **kwargs) 
>>>>
>>>>   File "/usr/local/reviewboard/python/Djblets-0.6.4-py2.7.egg/djblets/ 
>>>> webapi/core.py", line 136, in __encode 
>>>>     self.__encode(value, *args, **kwargs) 
>>>>
>>>>   File "/usr/local/reviewboard/python/Djblets-0.6.4-py2.7.egg/djblets/ 
>>>> webapi/core.py", line 164, in __encode 
>>>>     return self.__encode(result, *args, **kwargs) 
>>>>
>>>>   File "/usr/local/reviewboard/python/Djblets-0.6.4-py2.7.egg/djblets/ 
>>>> webapi/core.py", line 136, in __encode 
>>>>     self.__encode(value, *args, **kwargs) 
>>>>
>>>>   File "/usr/local/reviewboard/python/Djblets-0.6.4-py2.7.egg/djblets/ 
>>>> webapi/core.py", line 162, in __encode 
>>>>     raise TypeError("%r is not XML serializable" % (o,)) 
>>>>
>>>> TypeError: 2L is not XML serializable 
>>>>
>>>>
>>>> <WSGIRequest 
>>>> GET:<QueryDict: {}>, 
>>>> POST:<QueryDict: {}>, 
>>>> COOKIES:{'csrftoken': '3c25a25c4c6ced636686afac7a25a4f1', 
>>>>  'rbsessionid': '2aeedaf117ffddcef6c72c0d5a2a407b'}, 
>>>> META:{'DOCUMENT_ROOT': '/usr/local/reviewboard/web/htdocs', 
>>>>  'GATEWAY_INTERFACE': 'CGI/1.1', 
>>>>  'HTTP_ACCEPT': 'text/html,application/xhtml+xml,application/ 
>>>> xml;q=0.9,*/*;q=0.8', 
>>>>  'HTTP_ACCEPT_CHARSET': 'ISO-8859-1,utf-8;q=0.7,*;q=0.7', 
>>>>  'HTTP_ACCEPT_ENCODING': 'gzip,deflate', 
>>>>  'HTTP_ACCEPT_LANGUAGE': 'en-us,en;q=0.5', 
>>>>  'HTTP_CONNECTION': 'keep-alive', 
>>>>  'HTTP_COOKIE': 'rbsessionid=2aeedaf117ffddcef6c72c0d5a2a407b; 
>>>> csrftoken=3c25a25c4c6ced636686afac7a25a4f1', 
>>>>  'HTTP_HOST': 'reviewboard', 
>>>>  'HTTP_KEEP_ALIVE': '115', 
>>>>  'HTTP_USER_AGENT': 'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; 
>>>> rv:1.9.2.10) Gecko/20100914 Firefox/3.6.10', 
>>>>  'PATH': '/sbin:/usr/sbin:/bin:/usr/bin', 
>>>>  'PATH_INFO': u'/rboard/api/review-requests/93/last-update/', 
>>>>  'PATH_TRANSLATED': '/usr/local/reviewboard/web/htdocs/ 
>>>> reviewboard.fcgi/rboard/api/review-requests/93/last-update/', 
>>>>  'QUERY_STRING': '', 
>>>>  'REMOTE_ADDR': '10.20.68.52', 
>>>>  'REMOTE_PORT': '3620', 
>>>>  'REQUEST_METHOD': 'GET', 
>>>>  'REQUEST_URI': '/rboard/api/review-requests/93/last-update/', 
>>>>  'SCRIPT_FILENAME': '/usr/local/reviewboard/web/htdocs/ 
>>>> reviewboard.fcgi', 
>>>>  'SCRIPT_NAME': u'', 
>>>>  'SCRIPT_URI': 'http://reviewboard/rboard/api/review-requests/93/last- 
>>>> update/ <http://reviewboard/rboard/api/review-requests/93/last-update/>', 
>>>>
>>>>  'SCRIPT_URL': '/rboard/api/review-requests/93/last-update/', 
>>>>  'SERVER_ADDR': '10.20.30.183', 
>>>>  'SERVER_ADMIN': 'root@localhost', 
>>>>  'SERVER_NAME': 'reviewboard', 
>>>>  'SERVER_PORT': '80', 
>>>>  'SERVER_PROTOCOL': 'HTTP/1.1', 
>>>>  'SERVER_SIGNATURE': '<address>Apache/2.2.3 (CentOS) Server at 
>>>> reviewboard Port 80</address>\n', 
>>>>  'SERVER_SOFTWARE': 'Apache/2.2.3 (CentOS)', 
>>>>  'wsgi.errors': <flup.server.fcgi_base.OutputStream object at 
>>>> 0x197b4c50>, 
>>>>  'wsgi.input': <flup.server.fcgi_base.InputStream object at 
>>>> 0x197b4910>, 
>>>>  'wsgi.multiprocess': False, 
>>>>  'wsgi.multithread': True, 
>>>>  'wsgi.run_once': False, 
>>>>  'wsgi.url_scheme': 'http', 
>>>>  'wsgi.version': (1, 0)}> 
>>>>
>>>>

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