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Fix: Explicitly set proxy for httpx client to prevent connection pool corruption #166

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Fix: Explicitly set proxy for httpx client to prevent connection pool corruption #166

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12 changes: 12 additions & 0 deletions src/bot/core.py
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Original file line number Diff line number Diff line change
Expand Up @@ -64,6 +64,18 @@ async def initialize(self) -> None:
builder.write_timeout(30)
builder.pool_timeout(30)

# Explicitly set proxy from environment variables.
# This is necessary because python-telegram-bot's Application.builder()
# does not automatically use HTTP_PROXY/HTTPS_PROXY environment variables.
# Without this, the httpx connection pool can become corrupted when running
# behind a proxy, causing the bot to stop responding to messages.
import os

proxy_url = os.environ.get("HTTPS_PROXY") or os.environ.get("HTTP_PROXY")
if proxy_url:
builder.proxy(proxy_url)
logger.info("Proxy configured", proxy=proxy_url)

self.app = builder.build()

# Initialize feature registry
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