View as PDF - Yandex API
View as PDF - Yandex API
View as PDF - Yandex API
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Developer's guide<br />
23<br />
<br />
<br />
<br />
Robot request<br />
<br />
http://captcha.image.gif<br />
CAPTCHA ID number<br />
Status<br />
<br />
5. The user is returned a page containing a CAPTCHA.<br />
6. The user sends the CAPTCHA value to the partner.<br />
7. The partner sends the CAPTCHA value obtained from the user via a GET request in the following format:<br />
http://xmlsearch.yandex.ru/xcheckcaptchakey=&rep=<br />
8. The value received is checked by the <strong>Yandex</strong>.XML service. If the CAPTCHA value w<strong>as</strong> entered incorrectly,<br />
the process continues to step 4. In addition, the captcha-status parameter is p<strong>as</strong>sed with the value<br />
“failed”.<br />
9. If the CAPTCHA value w<strong>as</strong> entered correctly, <strong>Yandex</strong>.XML issues the user a "spravka" cookie and p<strong>as</strong>ses<br />
it to the partner in the header with the following format:<br />
HTTP/1.1 200 OK<br />
Set-Cookie: spravka=<br />
If the request p<strong>as</strong>sed to <strong>Yandex</strong>.XML in step 1 w<strong>as</strong> saved successfully, the process continues to step 12.<br />
10. The partner lets the user enter a query.<br />
11. The user sends a query to the <strong>Yandex</strong>.XML partner.<br />
12. The search query is sent to the <strong>Yandex</strong>.XML service. Along with the request, the user's IP address<br />
and "spravka" cookie are p<strong>as</strong>sed.<br />
13. <strong>Yandex</strong>.XML processes the search query and generates results.<br />
14. An XML file with search results is returned to the partner.<br />
15. The partner returns the processed response to the user. If in step 9 the <strong>Yandex</strong>.XML issued a "spravka"<br />
cookie, it is saved on the user's computer.<br />
Tip:<br />
To try out how this flow works, use this script.<br />
Verifying correct CAPTCHA display<br />
To get familiar with the response format returned by <strong>Yandex</strong>.XML when a CAPTCHA is displayed, send<br />
a request (the value of the query parameter of the search request) with the following string:<br />
“e48a2b93de1740f48f6de0d45dc4192a”.<br />
The following GET request can be used by the user “xml-search-user” for reviewing the response format returned when<br />
a CAPTCHA is displayed:<br />
wget -q --header="X-Real-Ip: 127.0.0.1" -SO- 'http://xmlsearch.yandex.ru/xmlsearch<br />
user=xml-searchuser&key=03.44583456:c876e1b098gh65khg834ggg1jk4ll9j8&query=e48a2b93de1740f48f6de0d45dc4<br />
192a&showmecaptcha=yes'<br />
<strong>Yandex</strong>.XML<br />
Developer's guide
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