Perfect working version with websocket.

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This commit is contained in:
retoor 2024-12-18 04:02:56 +01:00
parent 19f8f938ff
commit f506e5e52b
1 changed files with 59 additions and 40 deletions
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99
src/zamenyat/app.py
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@ -4,12 +4,13 @@ from concurrent.futures import ThreadPoolExecutor as Executor
import time
ZAMENYAT_THREAD_COUNT = 500
ZAMENYAT_BUFFER_SIZE = 4096*2
ZAMENYAT_BUFFER_SIZE = 64
ZAMENYAT_HEADER_MAX_LENGTH = 4096*2
class AsyncWriter:
def __init__(self, writer, buffer_size=ZAMENYAT_BUFFER_SIZE):
def __init__(self, writer, buffer_size=ZAMENYAT_BUFFER_SIZE,debug=False):
self.debug = debug
self.writer = writer
self.buffer_size = buffer_size
self.drain = self.writer.drain
@ -22,14 +23,29 @@ class AsyncWriter:
chunk_size = self.buffer_size if len(data) > self.buffer_size else len(data)
chunk = data[:chunk_size]
self.writer.write(chunk)
if self.debug:
print("Write chunk:", chunk)
data = data[chunk_size:]
await self.writer.drain()
class AsyncReader:
def __init__(self, reader):
def __init__(self, reader,debug=False):
self.reader = reader
self.buffer = b''
self.debug = debug
async def read_until(self, to_match):
buffer = b''
while not to_match in buffer:
chunk = await self.read()
if not chunk:
return None
buffer += chunk
match_start = buffer.find(to_match)
data = buffer[:match_start + len(to_match)]
await self.unread(buffer[match_start + len(to_match):])
return data
async def read(self, buffer_size=ZAMENYAT_BUFFER_SIZE, exact=False):
read_extra = buffer_size - len(self.buffer)
@ -38,12 +54,16 @@ class AsyncReader:
chunk = await self.reader.read(chunk_size)
if not chunk:
return None
if self.debug:
print("Read chunk:", chunk)
self.buffer += chunk
if not exact:
break
buffer_size = len(self.buffer) if len(self.buffer) < buffer_size else buffer_size
data = self.buffer[:buffer_size]
self.buffer = self.buffer[buffer_size:]
return data
async def unread(self, data):
@ -55,10 +75,12 @@ class AsyncReader:
class Socket:
def __init__(self, reader, writer, buffer_size):
self.reader = AsyncReader(reader)
self.writer = AsyncWriter(writer)
def __init__(self, reader, writer, buffer_size,debug=True):
self.debug = debug
self.reader = AsyncReader(reader,debug=self.debug)
self.writer = AsyncWriter(writer,debug=self.debug)
self.read = self.reader.read
self.read_until = self.reader.read_until
self.unread = self.reader.unread
self.write = self.writer.write
self.drain = self.writer.drain
@ -82,25 +104,13 @@ class Application:
async def get_headers(self, reader):
data = b''
headers = None
while True:
chunk = await reader.read(self.buffer_size)
if not chunk:
break
data += chunk
if len(data) > self.header_max_length:
break
headers_end = data.find(b'\r\n\r\n')
if headers_end:
headers = data[:headers_end]
data = data[headers_end + 4:]
await reader.unread(data)
break
headers = await reader.read_until(b'\r\n\r\n')
if not headers:
return None, None
headers = headers[:-2]
header_dict = {}
req_resp, *headers = headers.split(b"\r\n")
for header_line in headers:
for header_line in headers[:-1]:
key, *value = header_line.split(b": ")
key = key.decode()
value = ": ".join([value.decode() for value in value])
@ -125,7 +135,7 @@ class Application:
if not is_websocket:
req_resp, headers = await self.get_headers(reader)
if not headers:
break
return None
if headers:
if 'Content-Length' in headers:
while len(data) != headers['Content-Length']:
@ -134,7 +144,7 @@ class Application:
chunk = await reader.read(chunk_size)
if not chunk:
data = None
break
return None
print("Aff read")
data += chunk
await writer.write(self.header_dict_to_bytes(req_resp, headers))
@ -146,7 +156,8 @@ class Application:
await writer.write(data)
#if not headers.get('Connection') == 'keep-alive': # and not headers.get('Upgrade-Insecure-Requests'):
# break
break
if not is_websocket:
break
except asyncio.CancelledError:
pass
finally:
@ -168,23 +179,31 @@ class Application:
while True:
time_start = time.time()
print(f"Connected to upstream #{self.total_connection_count} server {self.upstream_host}:{self.upstream_port} #{connection_nr} Time: {get_timestamp()}")
request_headers = await self.stream(reader, upstream_writer,is_websocket)
keep_alive = False
if request_headers:
if request_headers.get('Connection') == 'keep-alive': # and not headers.get('Upgrade-Insecure-Requests'):
keep_alive = True
if request_headers.get("Upgrade") == 'websocket':
is_websocket = True
await self.stream(upstream_reader, writer, is_websocket)
time_end = time.time()
time_duration = time_end - time_start
print(f"Disconnected upstream #{self.total_connection_count} server {self.upstream_host}:{self.upstream_port} #{connection_nr} Duration: {time_duration:.5f}s")
if not any([keep_alive, is_websocket]):
if is_websocket:
await asyncio.gather(
self.stream(reader, upstream_writer,is_websocket),
self.stream(upstream_reader, writer, is_websocket)
)
break
else:
request_headers = await self.stream(reader, upstream_writer,is_websocket)
await self.stream(upstream_reader, writer, is_websocket)
keep_alive = False
if request_headers:
if request_headers.get('Connection') == 'keep-alive': # and not headers.get('Upgrade-Insecure-Requests'):
keep_alive = True
if request_headers.get("Upgrade") == 'websocket':
is_websocket = True
time_end = time.time()
time_duration = time_end - time_start
print(f"Disconnected upstream #{self.total_connection_count} server {self.upstream_host}:{self.upstream_port} #{connection_nr} Duration: {time_duration:.5f}s")
if not any([keep_alive, is_websocket]):
break
self.connection_count -= 1