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2022-12-14Python: Added "prefix" to configuration.OutOfFocus41-7/+21
This patch gives users the option to set a `"prefix"` attribute for Python applications, either at the top level or for specific `"target"`s. If the attribute is present, the value of `"prefix"` must be a string beginning with `"/"`. If the value of the `"prefix"` attribute is longer than 1 character and ends in `"/"`, the trailing `"/"` is stripped. The purpose of the `"prefix"` attribute is to set the `SCRIPT_NAME` context value for WSGI applications and the `root_path` context value for ASGI applications, allowing applications to properly route requests regardless of the path that the server uses to expose the application. The context value is only set if the request's URL path begins with the value of the `"prefix"` attribute. In all other cases, the `SCRIPT_NAME` or `root_path` values are not set. In addition, for WSGI applications, the value of `"prefix"` will be stripped from the beginning of the request's URL path before it is sent to the application. Reviewed-by: Andrei Zeliankou <zelenkov@nginx.com> Reviewed-by: Artem Konev <artem.konev@nginx.com> Signed-off-by: Alejandro Colomar <alx@nginx.com>
2022-11-15Optimization for the "--no-unix-sockets" case.Andrei Zeliankou1-21/+19
2022-10-03Renamed a couple of members of nxt_unit_request_t.Andrew Clayton1-1/+1
This is a preparatory patch that renames the 'local' and 'local_length' members of the nxt_unit_request_t structure to 'local_addr' and 'local_addr_length' in preparation for the adding of 'local_port' and 'local_port_length' members. Suggested-by: Zhidao HONG <z.hong@f5.com> Signed-off-by: Andrew Clayton <a.clayton@nginx.com>
2022-08-16Fixed UNIX sockets support for ASGI.Andrei Zeliankou1-1/+1
This change was forgotten in the original implementation 282123ba4f7b.
2022-08-08Python: supporting UNIX sockets.Alejandro Colomar1-1/+45
This closes #635 issue on GitHub.
2022-02-09Python: fixing debug message field type.Max Romanov1-1/+2
Introduced in the 78864c9d5ba8 commit. Sorry about that.
2022-02-08Python: fixing incorrect function object dereference.Max Romanov1-6/+12
The __call__ method can be native and not be a PyFunction type. A type check is thus required before accessing op_code and other fields. Reproduced on Ubuntu 21.04, Python 3.9.4 and Falcon framework: here, the App.__call__ method is compiled with Cython, so accessing op_code->co_flags is invalid; accidentally, the COROUTINE bit is set which forces the Python module into the ASGI mode. The workaround is explicit protocol specification. Note: it is impossible to specify the legacy mode for ASGI.
2021-10-28Moving request limit control to libunit.Max Romanov1-67/+7
Introducting application graceful stop. For now only used when application process reach request limit value. This closes #585 issue on GitHub.
2021-10-28Python: creating and reusing asgi_add_reader() wrapper.Max Romanov1-62/+21
2021-07-20Python: using default event_loop for main thread for ASGI.Max Romanov1-11/+17
Unit's ASGI implementation creates a new event loop to run an application for each thread since 542b5b8c0647. This may cause unexpected exceptions or strange bugs if asyncio synchronisation primitives are initialised before the application starts (e.g. globally). Although the approach with a new event loop for the main thread is consistent and helps to prepare the application to run in multiple threads, it can be a source of pain for people who just want to run single-threaded ASGI applications in Unit. This is related to #560 issue on GitHub.
2021-05-20Python: support for multiple targets.Oisin Canty1-17/+20
2020-12-29Libunit: processing single port message.Max Romanov1-13/+28
This partially reverts the optimisation introduced in 1d84b9e4b459 to avoid an unpredictable block in nxt_unit_process_port_msg(). Under high load, this function may never return control to its caller, and the external event loop (in Node.js and Python asyncio) won't be able to process other scheduled events. To reproduce the issue, two request processing types are needed: 'fast' and 'furious'. The 'fast' one simply returns a small response, while the 'furious' schedules asynchronous calls to external resources. Thus, if Unit is subjected to a large amount of 'fast' requests, the 'furious' request processing freezes until the high load ends. The issue was found by Wu Jian Ping (@wujjpp) during Node.js stream implementation discussion and relates to PR #502 on GitHub.
2020-11-18Libunit: closing active requests on quit.Max Romanov1-1/+14
2020-11-10Python: supporting ASGI legacy protocol.Max Romanov1-23/+98
Introducing manual protocol selection for 'universal' apps and frameworks.
2020-11-05Python: fixing some arguments reference counting.Max Romanov1-33/+130
2020-11-05Python: request processing in multiple threads.Max Romanov1-186/+304
This closes #459 issue on GitHub.
2020-10-01Python: ASGI server introduced.Max Romanov1-0/+1227
This closes #461 issue on GitHub.