Classes | Functions
tornado::httpclient Namespace Reference

Classes

class  _RequestProxy
class  AsyncHTTPClient
class  HTTPClient
class  HTTPError
class  HTTPRequest
class  HTTPResponse

Functions

def main

Detailed Description

Blocking and non-blocking HTTP client interfaces.

This module defines a common interface shared by two implementations,
``simple_httpclient`` and ``curl_httpclient``.  Applications may either
instantiate their chosen implementation class directly or use the
`AsyncHTTPClient` class from this module, which selects an implementation
that can be overridden with the `AsyncHTTPClient.configure` method.

The default implementation is ``simple_httpclient``, and this is expected
to be suitable for most users' needs.  However, some applications may wish
to switch to ``curl_httpclient`` for reasons such as the following:

* ``curl_httpclient`` has some features not found in ``simple_httpclient``,
  including support for HTTP proxies and the ability to use a specified
  network interface.

* ``curl_httpclient`` is more likely to be compatible with sites that are
  not-quite-compliant with the HTTP spec, or sites that use little-exercised
  features of HTTP.

* ``curl_httpclient`` is faster.

* ``curl_httpclient`` was the default prior to Tornado 2.0.

Note that if you are using ``curl_httpclient``, it is highly
recommended that you use a recent version of ``libcurl`` and
``pycurl``.  Currently the minimum supported version of libcurl is
7.21.1, and the minimum version of pycurl is 7.18.2.  It is highly
recommended that your ``libcurl`` installation is built with
asynchronous DNS resolver (threaded or c-ares), otherwise you may
encounter various problems with request timeouts (for more
information, see
http://curl.haxx.se/libcurl/c/curl_easy_setopt.html#CURLOPTCONNECTTIMEOUTMS
and comments in curl_httpclient.py).

To select ``curl_httpclient``, call `AsyncHTTPClient.configure` at startup::

    AsyncHTTPClient.configure("tornado.curl_httpclient.CurlAsyncHTTPClient")

Function Documentation

Definition at line 612 of file httpclient.py.



rosbridge_server
Author(s): Jonathan Mace
autogenerated on Thu Jun 6 2019 21:51:51