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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,132 @@ | ||
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| import asyncio | ||
| from typing import Optional | ||
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| import h2.events | ||
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| from aiosonic.types import ParamsType | ||
| from aiosonic.types import ParsedBodyType | ||
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| class Http2Handler(object): | ||
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| def __init__(self, connection): | ||
| """Initialize.""" | ||
| self.connection = connection | ||
| h2conn = connection.h2conn | ||
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| loop = asyncio.get_event_loop() | ||
| h2conn.initiate_connection() | ||
| self.writer_q = asyncio.Queue() | ||
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| self.requests = {} | ||
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| # This reproduces the error in #396, by changing the header table size. | ||
| # h2conn.update_settings({SettingsFrame.HEADER_TABLE_SIZE: 4096}) | ||
| self.writer.write(h2conn.data_to_send()) | ||
| self.reader_task = loop.create_task(self.reader_t()) | ||
| self.writer_task = loop.create_task(self.writer_t()) | ||
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| @property | ||
| def writer(self): | ||
| return self.connection.writer | ||
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| @property | ||
| def reader(self): | ||
| return self.connection.reader | ||
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| @property | ||
| def h2conn(self): | ||
| return self.connection.h2conn | ||
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| def cleanup(self): | ||
| """Cleanup.""" | ||
| self.reader_task.cancel() | ||
| self.writer_task.cancel() | ||
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| async def request(self, headers: ParamsType, body: Optional[ParsedBodyType]): | ||
| stream_id = self.h2conn.get_next_available_stream_id() | ||
| self.h2conn.send_headers(stream_id, headers.items(), | ||
| end_stream=True) | ||
| from aiosonic import HttpResponse | ||
| future = asyncio.Future() | ||
| self.requests[stream_id] = { | ||
| 'body': b'', | ||
| 'headers': None, | ||
| 'future': future | ||
| } | ||
| await self.writer_q.put(True) | ||
| await future | ||
| res = self.requests[stream_id].copy() | ||
| del self.requests[stream_id] | ||
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| response = HttpResponse() | ||
| for key, val in res['headers']: | ||
| if key == b':status': | ||
| response.response_initial = { | ||
| 'version': b'2', | ||
| 'code': val | ||
| } | ||
| else: | ||
| response._set_header(key, val) | ||
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| if res['body']: | ||
| response._set_body(res['body']) | ||
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| return response | ||
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| async def reader_t(self): | ||
| """Reader task.""" | ||
| read_size = 16000 | ||
| h2conn = self.h2conn | ||
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| while True: | ||
| data = await asyncio.wait_for(self.reader.read(read_size), 3) | ||
| events = h2conn.receive_data(data) | ||
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| if not events: | ||
| continue | ||
| else: | ||
| for event in events: | ||
| if isinstance(event, h2.events.StreamEnded): | ||
| self.requests[event.stream_id]['future'].set_result( | ||
| self.requests[event.stream_id]['body']) | ||
| elif isinstance(event, h2.events.DataReceived): | ||
| self.requests[event.stream_id]['body'] += event.data | ||
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| if (event.stream_id in h2conn.streams | ||
| and not h2conn.streams[event.stream_id].closed): | ||
| h2conn.increment_flow_control_window( | ||
| event.flow_controlled_length, event.stream_id) | ||
| h2conn.increment_flow_control_window( | ||
| event.flow_controlled_length) | ||
| elif isinstance(event, h2.events.ResponseReceived): | ||
| self.requests[ | ||
| event.stream_id]['headers'] = event.headers | ||
| elif isinstance(event, ( | ||
| h2.events.WindowUpdated, | ||
| h2.events.PingReceived, | ||
| h2.events.RemoteSettingsChanged, | ||
| h2.events.SettingsAcknowledged | ||
| )): | ||
| pass | ||
| else: | ||
| raise Exception( | ||
| f'another event {event.__class__.__name__}') | ||
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| await self.writer_q.put(True) | ||
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| async def writer_t(self): | ||
| """Writer task.""" | ||
| h2conn = self.h2conn | ||
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| while True: | ||
| await self.writer_q.get() | ||
| while True: | ||
| data_to_send = h2conn.data_to_send() | ||
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| if data_to_send: | ||
| self.writer.write(data_to_send) | ||
| else: | ||
| break |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,34 @@ | ||
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| from typing import Union | ||
| from typing import Dict | ||
| from typing import Sequence | ||
| from typing import Tuple | ||
| from typing import AsyncIterator | ||
| from typing import Iterator | ||
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| # TYPES | ||
| ParamsType = Union[ | ||
| Dict[str, str], | ||
| Sequence[Tuple[str, str]], | ||
| ] | ||
| #: Data to be sent in requests, allowed types | ||
| DataType = Union[ | ||
| str, | ||
| bytes, | ||
| dict, | ||
| tuple, | ||
| AsyncIterator[bytes], | ||
| Iterator[bytes], | ||
| ] | ||
| BodyType = Union[ | ||
| str, | ||
| bytes, | ||
| AsyncIterator[bytes], | ||
| Iterator[bytes], | ||
| ] | ||
| ParsedBodyType = Union[ | ||
| bytes, | ||
| AsyncIterator[bytes], | ||
| Iterator[bytes], | ||
| ] |
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