mirror of
https://github.com/Dispatcharr/Dispatcharr.git
synced 2026-01-23 18:54:58 +00:00
89a23164ff
System Event Logging: - Add SystemEvent model with 15 event types tracking channel operations, client connections, M3U/EPG activities, and buffering events - Log detailed metrics for M3U/EPG refresh operations (streams/programs created/updated/deleted) - Track M3U/EPG downloads with client information (IP address, user agent, profile, channel count) - Record channel lifecycle events (start, stop, reconnect) with stream and client details - Monitor client connections/disconnections and buffering events with stream metadata Event Viewer UI: - Add SystemEvents component with real-time updates via WebSocket - Implement pagination, filtering by event type, and configurable auto-refresh - Display events with color-coded badges and type-specific icons - Integrate event viewer into Stats page with modal display - Add event management settings (retention period, refresh rate) M3U/EPG Endpoint Optimizations: - Implement content caching with 5-minute TTL to reduce duplicate processing - Add client-based event deduplication (2-second window) using IP and user agent hashing - Support HEAD requests for efficient preflight checks - Cache streamed EPG responses while maintaining streaming behavior for first request
511 lines
No EOL
25 KiB
Python
511 lines
No EOL
25 KiB
Python
"""
|
|
Stream generation and client-side handling for TS streams.
|
|
This module handles generating and delivering video streams to clients.
|
|
"""
|
|
|
|
import time
|
|
import logging
|
|
import threading
|
|
import gevent # Add this import at the top of your file
|
|
from apps.proxy.config import TSConfig as Config
|
|
from apps.channels.models import Channel
|
|
from core.utils import log_system_event
|
|
from .server import ProxyServer
|
|
from .utils import create_ts_packet, get_logger
|
|
from .redis_keys import RedisKeys
|
|
from .utils import get_logger
|
|
from .constants import ChannelMetadataField
|
|
from .config_helper import ConfigHelper # Add this import
|
|
|
|
logger = get_logger()
|
|
|
|
class StreamGenerator:
|
|
"""
|
|
Handles generating streams for clients, including initialization,
|
|
data delivery, and cleanup.
|
|
"""
|
|
|
|
def __init__(self, channel_id, client_id, client_ip, client_user_agent, channel_initializing=False):
|
|
"""
|
|
Initialize the stream generator with client and channel details.
|
|
|
|
Args:
|
|
channel_id: The UUID of the channel to stream
|
|
client_id: Unique ID for this client connection
|
|
client_ip: Client's IP address
|
|
client_user_agent: User agent string from client
|
|
channel_initializing: Whether the channel is still initializing
|
|
"""
|
|
self.channel_id = channel_id
|
|
self.client_id = client_id
|
|
self.client_ip = client_ip
|
|
self.client_user_agent = client_user_agent
|
|
self.channel_initializing = channel_initializing
|
|
|
|
# Performance and state tracking
|
|
self.stream_start_time = time.time()
|
|
self.bytes_sent = 0
|
|
self.chunks_sent = 0
|
|
self.local_index = 0
|
|
self.consecutive_empty = 0
|
|
|
|
# Add tracking for current transfer rate calculation
|
|
self.last_stats_time = time.time()
|
|
self.last_stats_bytes = 0
|
|
self.current_rate = 0.0
|
|
|
|
# TTL refresh tracking
|
|
self.last_ttl_refresh = time.time()
|
|
self.ttl_refresh_interval = 3 # Refresh TTL every 3 seconds of active streaming
|
|
|
|
def generate(self):
|
|
"""
|
|
Generator function that produces the stream content for the client.
|
|
Handles initialization state, data delivery, and client disconnection.
|
|
|
|
Yields:
|
|
bytes: Chunks of TS stream data
|
|
"""
|
|
self.stream_start_time = time.time()
|
|
self.bytes_sent = 0
|
|
self.chunks_sent = 0
|
|
|
|
try:
|
|
logger.info(f"[{self.client_id}] Stream generator started, channel_ready={not self.channel_initializing}")
|
|
|
|
# First handle initialization if needed
|
|
if self.channel_initializing:
|
|
channel_ready = self._wait_for_initialization()
|
|
if not channel_ready:
|
|
# If initialization failed or timed out, we've already sent error packets
|
|
return
|
|
|
|
# Channel is now ready - start normal streaming
|
|
logger.info(f"[{self.client_id}] Channel {self.channel_id} ready, starting normal streaming")
|
|
|
|
# Reset start time for real streaming
|
|
self.stream_start_time = time.time()
|
|
|
|
# Setup streaming parameters and verify resources
|
|
if not self._setup_streaming():
|
|
return
|
|
|
|
# Log client connect event
|
|
try:
|
|
channel_obj = Channel.objects.get(uuid=self.channel_id)
|
|
log_system_event(
|
|
'client_connect',
|
|
channel_id=self.channel_id,
|
|
channel_name=channel_obj.name,
|
|
client_ip=self.client_ip,
|
|
client_id=self.client_id,
|
|
user_agent=self.client_user_agent[:100] if self.client_user_agent else None
|
|
)
|
|
except Exception as e:
|
|
logger.error(f"Could not log client connect event: {e}")
|
|
|
|
# Main streaming loop
|
|
for chunk in self._stream_data_generator():
|
|
yield chunk
|
|
|
|
except Exception as e:
|
|
logger.error(f"[{self.client_id}] Stream error: {e}", exc_info=True)
|
|
finally:
|
|
self._cleanup()
|
|
|
|
def _wait_for_initialization(self):
|
|
"""Wait for channel initialization to complete, sending keepalive packets."""
|
|
initialization_start = time.time()
|
|
max_init_wait = ConfigHelper.client_wait_timeout()
|
|
keepalive_interval = 0.5
|
|
last_keepalive = 0
|
|
proxy_server = ProxyServer.get_instance()
|
|
|
|
# While init is happening, send keepalive packets
|
|
while time.time() - initialization_start < max_init_wait:
|
|
# Check if initialization has completed
|
|
if proxy_server.redis_client:
|
|
metadata_key = RedisKeys.channel_metadata(self.channel_id)
|
|
metadata = proxy_server.redis_client.hgetall(metadata_key)
|
|
|
|
if metadata and b'state' in metadata:
|
|
state = metadata[b'state'].decode('utf-8')
|
|
if state in ['waiting_for_clients', 'active']:
|
|
logger.info(f"[{self.client_id}] Channel {self.channel_id} now ready (state={state})")
|
|
return True
|
|
elif state in ['error', 'stopped', 'stopping']: # Added 'stopping' to error states
|
|
error_message = metadata.get(b'error_message', b'Unknown error').decode('utf-8')
|
|
logger.error(f"[{self.client_id}] Channel {self.channel_id} in error state: {state}, message: {error_message}")
|
|
# Send error packet before giving up
|
|
yield create_ts_packet('error', f"Error: {error_message}")
|
|
return False
|
|
else:
|
|
# Improved logging to track initialization progress
|
|
init_time = "unknown"
|
|
if b'init_time' in metadata:
|
|
try:
|
|
init_time_float = float(metadata[b'init_time'].decode('utf-8'))
|
|
init_duration = time.time() - init_time_float
|
|
init_time = f"{init_duration:.1f}s ago"
|
|
except:
|
|
pass
|
|
|
|
# Still initializing - send keepalive if needed
|
|
if time.time() - last_keepalive >= keepalive_interval:
|
|
status_msg = f"Initializing: {state} (started {init_time})"
|
|
keepalive_packet = create_ts_packet('keepalive', status_msg)
|
|
logger.debug(f"[{self.client_id}] Sending keepalive packet during initialization, state={state}")
|
|
yield keepalive_packet
|
|
self.bytes_sent += len(keepalive_packet)
|
|
last_keepalive = time.time()
|
|
|
|
# Also check stopping key directly
|
|
stop_key = RedisKeys.channel_stopping(self.channel_id)
|
|
if proxy_server.redis_client.exists(stop_key):
|
|
logger.error(f"[{self.client_id}] Channel {self.channel_id} stopping flag detected during initialization")
|
|
yield create_ts_packet('error', "Error: Channel is stopping")
|
|
return False
|
|
|
|
# Wait a bit before checking again
|
|
gevent.sleep(0.1)
|
|
|
|
# Timed out waiting
|
|
logger.warning(f"[{self.client_id}] Timed out waiting for initialization")
|
|
yield create_ts_packet('error', "Error: Initialization timeout")
|
|
return False
|
|
|
|
def _setup_streaming(self):
|
|
"""Setup streaming parameters and check resources."""
|
|
proxy_server = ProxyServer.get_instance()
|
|
|
|
# Get buffer - stream manager may not exist in this worker
|
|
buffer = proxy_server.stream_buffers.get(self.channel_id)
|
|
stream_manager = proxy_server.stream_managers.get(self.channel_id)
|
|
|
|
if not buffer:
|
|
logger.error(f"[{self.client_id}] No buffer found for channel {self.channel_id}")
|
|
return False
|
|
|
|
# Client state tracking - use config for initial position
|
|
initial_behind = ConfigHelper.initial_behind_chunks()
|
|
current_buffer_index = buffer.index
|
|
self.local_index = max(0, current_buffer_index - initial_behind)
|
|
|
|
# Store important objects as instance variables
|
|
self.buffer = buffer
|
|
self.stream_manager = stream_manager
|
|
self.last_yield_time = time.time()
|
|
self.empty_reads = 0
|
|
self.consecutive_empty = 0
|
|
self.is_owner_worker = proxy_server.am_i_owner(self.channel_id) if hasattr(proxy_server, 'am_i_owner') else True
|
|
|
|
logger.info(f"[{self.client_id}] Starting stream at index {self.local_index} (buffer at {buffer.index})")
|
|
return True
|
|
|
|
def _stream_data_generator(self):
|
|
"""Generate stream data chunks based on buffer contents."""
|
|
# Main streaming loop
|
|
while True:
|
|
# Check if resources still exist
|
|
if not self._check_resources():
|
|
break
|
|
|
|
# Get chunks at client's position using improved strategy
|
|
chunks, next_index = self.buffer.get_optimized_client_data(self.local_index)
|
|
|
|
if chunks:
|
|
yield from self._process_chunks(chunks, next_index)
|
|
self.local_index = next_index
|
|
self.last_yield_time = time.time()
|
|
self.empty_reads = 0
|
|
self.consecutive_empty = 0
|
|
else:
|
|
# Handle no data condition (with possible keepalive packets)
|
|
self.empty_reads += 1
|
|
self.consecutive_empty += 1
|
|
|
|
# Check if we're too far behind (chunks expired from Redis)
|
|
chunks_behind = self.buffer.index - self.local_index
|
|
if chunks_behind > 50: # If more than 50 chunks behind, jump forward
|
|
# Calculate new position: stay a few chunks behind current buffer
|
|
initial_behind = ConfigHelper.initial_behind_chunks()
|
|
new_index = max(self.local_index, self.buffer.index - initial_behind)
|
|
|
|
logger.warning(f"[{self.client_id}] Client too far behind ({chunks_behind} chunks), jumping from {self.local_index} to {new_index}")
|
|
self.local_index = new_index
|
|
self.consecutive_empty = 0 # Reset since we're repositioning
|
|
continue # Try again immediately with new position
|
|
|
|
if self._should_send_keepalive(self.local_index):
|
|
keepalive_packet = create_ts_packet('keepalive')
|
|
logger.debug(f"[{self.client_id}] Sending keepalive packet while waiting at buffer head")
|
|
yield keepalive_packet
|
|
self.bytes_sent += len(keepalive_packet)
|
|
self.last_yield_time = time.time()
|
|
self.consecutive_empty = 0 # Reset consecutive counter but keep total empty_reads
|
|
gevent.sleep(Config.KEEPALIVE_INTERVAL) # Replace time.sleep
|
|
else:
|
|
# Standard wait with backoff
|
|
sleep_time = min(0.1 * self.consecutive_empty, 1.0)
|
|
gevent.sleep(sleep_time) # Replace time.sleep
|
|
|
|
# Log empty reads periodically
|
|
if self.empty_reads % 50 == 0:
|
|
stream_status = "healthy" if (self.stream_manager and self.stream_manager.healthy) else "unknown"
|
|
logger.debug(f"[{self.client_id}] Waiting for chunks beyond {self.local_index} for channel: {self.channel_id} (buffer at {self.buffer.index}, stream: {stream_status})")
|
|
|
|
# Check for ghost clients
|
|
if self._is_ghost_client(self.local_index):
|
|
logger.warning(f"[{self.client_id}] Possible ghost client: buffer has advanced {self.buffer.index - self.local_index} chunks ahead but client stuck at {self.local_index}")
|
|
break
|
|
|
|
# Check for timeouts
|
|
if self._is_timeout():
|
|
break
|
|
|
|
def _check_resources(self):
|
|
"""Check if required resources still exist."""
|
|
proxy_server = ProxyServer.get_instance()
|
|
|
|
# Enhanced resource checks
|
|
if self.channel_id not in proxy_server.stream_buffers:
|
|
logger.info(f"[{self.client_id}] Channel buffer no longer exists, terminating stream")
|
|
return False
|
|
|
|
if self.channel_id not in proxy_server.client_managers:
|
|
logger.info(f"[{self.client_id}] Client manager no longer exists, terminating stream")
|
|
return False
|
|
|
|
# Check if this specific client has been stopped (Redis keys, etc.)
|
|
if proxy_server.redis_client:
|
|
# Channel stop check - with extended key set
|
|
stop_key = RedisKeys.channel_stopping(self.channel_id)
|
|
if proxy_server.redis_client.exists(stop_key):
|
|
logger.info(f"[{self.client_id}] Detected channel stop signal, terminating stream")
|
|
return False
|
|
|
|
# Also check channel state in metadata
|
|
metadata_key = RedisKeys.channel_metadata(self.channel_id)
|
|
metadata = proxy_server.redis_client.hgetall(metadata_key)
|
|
if metadata and b'state' in metadata:
|
|
state = metadata[b'state'].decode('utf-8')
|
|
if state in ['error', 'stopped', 'stopping']:
|
|
logger.info(f"[{self.client_id}] Channel in {state} state, terminating stream")
|
|
return False
|
|
|
|
# Client stop check
|
|
client_stop_key = RedisKeys.client_stop(self.channel_id, self.client_id)
|
|
if proxy_server.redis_client.exists(client_stop_key):
|
|
logger.info(f"[{self.client_id}] Detected client stop signal, terminating stream")
|
|
return False
|
|
|
|
# Also check if client has been removed from client_manager
|
|
if self.channel_id in proxy_server.client_managers:
|
|
client_manager = proxy_server.client_managers[self.channel_id]
|
|
if self.client_id not in client_manager.clients:
|
|
logger.info(f"[{self.client_id}] Client no longer in client manager, terminating stream")
|
|
return False
|
|
|
|
return True
|
|
|
|
def _process_chunks(self, chunks, next_index):
|
|
"""Process and yield chunks to the client."""
|
|
# Process and send chunks
|
|
total_size = sum(len(c) for c in chunks)
|
|
logger.debug(f"[{self.client_id}] Retrieved {len(chunks)} chunks ({total_size} bytes) from index {self.local_index+1} to {next_index}")
|
|
proxy_server = ProxyServer.get_instance()
|
|
|
|
# Send the chunks to the client
|
|
for chunk in chunks:
|
|
try:
|
|
yield chunk
|
|
self.bytes_sent += len(chunk)
|
|
self.chunks_sent += 1
|
|
logger.debug(f"[{self.client_id}] Sent chunk {self.chunks_sent} ({len(chunk)} bytes) for channel {self.channel_id} to client")
|
|
|
|
current_time = time.time()
|
|
|
|
# Calculate average rate (since stream start)
|
|
elapsed_total = current_time - self.stream_start_time
|
|
avg_rate = self.bytes_sent / elapsed_total / 1024 if elapsed_total > 0 else 0
|
|
|
|
# Calculate current rate (since last measurement)
|
|
elapsed_current = current_time - self.last_stats_time
|
|
bytes_since_last = self.bytes_sent - self.last_stats_bytes
|
|
|
|
if elapsed_current > 0:
|
|
self.current_rate = bytes_since_last / elapsed_current / 1024
|
|
|
|
# Update last stats values
|
|
self.last_stats_time = current_time
|
|
self.last_stats_bytes = self.bytes_sent
|
|
# Log every 10 chunks
|
|
if self.chunks_sent % 10 == 0:
|
|
logger.debug(f"[{self.client_id}] Stats: {self.chunks_sent} chunks, {self.bytes_sent/1024:.1f} KB, "
|
|
f"avg: {avg_rate:.1f} KB/s, current: {self.current_rate:.1f} KB/s")
|
|
|
|
# Store stats in Redis client metadata
|
|
if proxy_server.redis_client:
|
|
try:
|
|
client_key = RedisKeys.client_metadata(self.channel_id, self.client_id)
|
|
stats = {
|
|
ChannelMetadataField.CHUNKS_SENT: str(self.chunks_sent),
|
|
ChannelMetadataField.BYTES_SENT: str(self.bytes_sent),
|
|
ChannelMetadataField.AVG_RATE_KBPS: str(round(avg_rate, 1)),
|
|
ChannelMetadataField.CURRENT_RATE_KBPS: str(round(self.current_rate, 1)),
|
|
ChannelMetadataField.STATS_UPDATED_AT: str(current_time)
|
|
}
|
|
proxy_server.redis_client.hset(client_key, mapping=stats)
|
|
|
|
# Refresh TTL periodically while actively streaming
|
|
# This provides proof-of-life independent of heartbeat thread
|
|
if current_time - self.last_ttl_refresh > self.ttl_refresh_interval:
|
|
try:
|
|
# Refresh TTL on client key
|
|
proxy_server.redis_client.expire(client_key, Config.CLIENT_RECORD_TTL)
|
|
# Also refresh the client set TTL
|
|
client_set_key = f"ts_proxy:channel:{self.channel_id}:clients"
|
|
proxy_server.redis_client.expire(client_set_key, Config.CLIENT_RECORD_TTL)
|
|
self.last_ttl_refresh = current_time
|
|
logger.debug(f"[{self.client_id}] Refreshed client TTL (active streaming)")
|
|
except Exception as ttl_error:
|
|
logger.debug(f"[{self.client_id}] Failed to refresh TTL: {ttl_error}")
|
|
except Exception as e:
|
|
logger.warning(f"[{self.client_id}] Failed to store stats in Redis: {e}")
|
|
|
|
except Exception as e:
|
|
logger.error(f"[{self.client_id}] Error sending chunk to client: {e}")
|
|
raise # Re-raise to exit the generator
|
|
|
|
def _should_send_keepalive(self, local_index):
|
|
"""Determine if a keepalive packet should be sent."""
|
|
# Check if we're caught up to buffer head
|
|
at_buffer_head = local_index >= self.buffer.index
|
|
|
|
# If we're at buffer head and no data is coming, send keepalive
|
|
stream_healthy = self.stream_manager.healthy if self.stream_manager else True
|
|
return at_buffer_head and not stream_healthy and self.consecutive_empty >= 5
|
|
|
|
def _is_ghost_client(self, local_index):
|
|
"""Check if this appears to be a ghost client (stuck but buffer advancing)."""
|
|
return self.consecutive_empty > 100 and self.buffer.index > local_index + 50
|
|
|
|
def _is_timeout(self):
|
|
"""Check if the stream has timed out."""
|
|
# Get a more generous timeout for stream switching
|
|
stream_timeout = ConfigHelper.stream_timeout()
|
|
failover_grace_period = ConfigHelper.failover_grace_period()
|
|
total_timeout = stream_timeout + failover_grace_period
|
|
|
|
# Disconnect after long inactivity
|
|
if time.time() - self.last_yield_time > total_timeout:
|
|
if self.stream_manager and not self.stream_manager.healthy:
|
|
# Check if stream manager is actively switching or reconnecting
|
|
if (hasattr(self.stream_manager, 'url_switching') and self.stream_manager.url_switching):
|
|
logger.info(f"[{self.client_id}] Stream switching in progress, giving more time")
|
|
return False
|
|
|
|
logger.warning(f"[{self.client_id}] No data for {total_timeout}s and stream unhealthy, disconnecting")
|
|
return True
|
|
elif not self.is_owner_worker and self.consecutive_empty > 100:
|
|
# Non-owner worker without data for too long
|
|
logger.warning(f"[{self.client_id}] Non-owner worker with no data for {total_timeout}s, disconnecting")
|
|
return True
|
|
return False
|
|
|
|
def _cleanup(self):
|
|
"""Clean up resources and report final statistics."""
|
|
# Client cleanup
|
|
elapsed = time.time() - self.stream_start_time
|
|
local_clients = 0
|
|
total_clients = 0
|
|
proxy_server = ProxyServer.get_instance()
|
|
|
|
# Release M3U profile stream allocation if this is the last client
|
|
stream_released = False
|
|
if proxy_server.redis_client:
|
|
try:
|
|
metadata_key = RedisKeys.channel_metadata(self.channel_id)
|
|
metadata = proxy_server.redis_client.hgetall(metadata_key)
|
|
if metadata:
|
|
stream_id_bytes = proxy_server.redis_client.hget(metadata_key, ChannelMetadataField.STREAM_ID)
|
|
if stream_id_bytes:
|
|
stream_id = int(stream_id_bytes.decode('utf-8'))
|
|
|
|
# Check if we're the last client
|
|
if self.channel_id in proxy_server.client_managers:
|
|
client_count = proxy_server.client_managers[self.channel_id].get_total_client_count()
|
|
# Only the last client or owner should release the stream
|
|
if client_count <= 1 and proxy_server.am_i_owner(self.channel_id):
|
|
from apps.channels.models import Channel
|
|
try:
|
|
# Get the channel by UUID
|
|
channel = Channel.objects.get(uuid=self.channel_id)
|
|
channel.release_stream()
|
|
stream_released = True
|
|
logger.debug(f"[{self.client_id}] Released stream for channel {self.channel_id}")
|
|
except Exception as e:
|
|
logger.error(f"[{self.client_id}] Error releasing stream for channel {self.channel_id}: {e}")
|
|
except Exception as e:
|
|
logger.error(f"[{self.client_id}] Error checking stream data for release: {e}")
|
|
|
|
if self.channel_id in proxy_server.client_managers:
|
|
client_manager = proxy_server.client_managers[self.channel_id]
|
|
local_clients = client_manager.remove_client(self.client_id)
|
|
total_clients = client_manager.get_total_client_count()
|
|
logger.info(f"[{self.client_id}] Disconnected after {elapsed:.2f}s (local: {local_clients}, total: {total_clients})")
|
|
|
|
# Log client disconnect event
|
|
try:
|
|
channel_obj = Channel.objects.get(uuid=self.channel_id)
|
|
log_system_event(
|
|
'client_disconnect',
|
|
channel_id=self.channel_id,
|
|
channel_name=channel_obj.name,
|
|
client_ip=self.client_ip,
|
|
client_id=self.client_id,
|
|
user_agent=self.client_user_agent[:100] if self.client_user_agent else None,
|
|
duration=round(elapsed, 2),
|
|
bytes_sent=self.bytes_sent
|
|
)
|
|
except Exception as e:
|
|
logger.error(f"Could not log client disconnect event: {e}")
|
|
|
|
# Schedule channel shutdown if no clients left
|
|
if not stream_released: # Only if we haven't already released the stream
|
|
self._schedule_channel_shutdown_if_needed(local_clients)
|
|
|
|
def _schedule_channel_shutdown_if_needed(self, local_clients):
|
|
"""
|
|
Schedule channel shutdown if there are no clients left and we're the owner.
|
|
"""
|
|
proxy_server = ProxyServer.get_instance()
|
|
|
|
# If no clients left and we're the owner, schedule shutdown using the config value
|
|
if local_clients == 0 and proxy_server.am_i_owner(self.channel_id):
|
|
logger.info(f"No local clients left for channel {self.channel_id}, scheduling shutdown")
|
|
|
|
def delayed_shutdown():
|
|
# Use the config setting instead of hardcoded value
|
|
shutdown_delay = ConfigHelper.channel_shutdown_delay() # Use ConfigHelper
|
|
logger.info(f"Waiting {shutdown_delay}s before checking if channel should be stopped")
|
|
gevent.sleep(shutdown_delay) # Replace time.sleep
|
|
|
|
# After delay, check global client count
|
|
if self.channel_id in proxy_server.client_managers:
|
|
total = proxy_server.client_managers[self.channel_id].get_total_client_count()
|
|
if total == 0:
|
|
logger.info(f"Shutting down channel {self.channel_id} as no clients connected")
|
|
proxy_server.stop_channel(self.channel_id)
|
|
else:
|
|
logger.info(f"Not shutting down channel {self.channel_id}, {total} clients still connected")
|
|
|
|
gevent.spawn(delayed_shutdown)
|
|
|
|
def create_stream_generator(channel_id, client_id, client_ip, client_user_agent, channel_initializing=False):
|
|
"""
|
|
Factory function to create a new stream generator.
|
|
Returns a function that can be passed to StreamingHttpResponse.
|
|
"""
|
|
generator = StreamGenerator(channel_id, client_id, client_ip, client_user_agent, channel_initializing)
|
|
return generator.generate |