312 lines
12 KiB
Python
312 lines
12 KiB
Python
"""
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ComfyUI HTTPS Bridge
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====================
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在 ComfyUI 启动时自动开启一个本地 HTTPS 代理服务器，
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让部署在公网 HTTPS 页面的套壳应用可以安全连接到本地 ComfyUI。
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安装：将本文件夹放入 ComfyUI/custom_nodes/ 目录，重启 ComfyUI 即可。
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地址检测优先级：
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1. 环境变量 COMFY_HOST / COMFY_PORT（手动覆盖，优先级最高）
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2. ComfyUI 启动参数 --listen / --port（自动读取）
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3. 默认值 127.0.0.1:8188
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环境变量（可选）：
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COMFY_BRIDGE_PORT 桥接端口，默认 9999
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COMFY_HOST 覆盖 ComfyUI 地址
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COMFY_PORT 覆盖 ComfyUI 端口
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"""
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import asyncio
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import ssl
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import os
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import socket
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import threading
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import ipaddress
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import datetime
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import pathlib
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import traceback
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# ── 配置 ──────────────────────────────────────────────────────────────────────
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BRIDGE_PORT = int(os.environ.get('COMFY_BRIDGE_PORT', 9999))
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def _get_local_ip():
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"""获取本机对外的实际 IP 地址（非 127.0.0.1）。"""
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try:
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# 连接一个外部地址（不会真正发包），借此确定本机出口 IP
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s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
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s.connect(('8.8.8.8', 80))
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ip = s.getsockname()[0]
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s.close()
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return ip
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except Exception:
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return '127.0.0.1'
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def _detect_comfy_address():
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"""
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按优先级检测 ComfyUI 实际监听地址：
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1. 环境变量 COMFY_HOST / COMFY_PORT
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2. ComfyUI 启动参数 --listen / --port
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3. 默认 127.0.0.1:8188
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"""
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host, port = '127.0.0.1', 8188
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# 从 ComfyUI 内部读取启动参数
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try:
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from comfy.cli_args import args
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if args.port:
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port = int(args.port)
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if args.listen:
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listen = args.listen.strip()
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# 0.0.0.0 / :: 表示监听所有接口，取本机实际出口 IP
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host = _get_local_ip() if listen in ('0.0.0.0', '::') else listen
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except Exception:
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pass # 不在 ComfyUI 环境中也能降级运行
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# 环境变量最终覆盖（优先级最高）
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host = os.environ.get('COMFY_HOST', host)
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port = int(os.environ.get('COMFY_PORT', port))
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return host, port
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COMFY_HOST, COMFY_PORT = _detect_comfy_address()
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CERT_DIR = pathlib.Path(__file__).parent / '.certs'
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CORS_HEADERS = {
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'Access-Control-Allow-Origin': '*',
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'Access-Control-Allow-Methods': '*',
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'Access-Control-Allow-Headers': '*',
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}
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# ── 证书生成 ──────────────────────────────────────────────────────────────────
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def generate_cert():
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"""使用 cryptography 库生成自签名证书，无需任何外部工具。"""
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try:
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from cryptography import x509
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from cryptography.x509.oid import NameOID
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from cryptography.hazmat.primitives import hashes, serialization
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from cryptography.hazmat.primitives.asymmetric import rsa
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except ImportError:
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print('[HTTPS Bridge] ❌ 缺少 cryptography 库，请在 ComfyUI 的 Python 环境中运行：')
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print(' pip install cryptography')
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return None, None
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cert_file = CERT_DIR / 'cert.pem'
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key_file = CERT_DIR / 'key.pem'
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if cert_file.exists() and key_file.exists():
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return str(cert_file), str(key_file)
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CERT_DIR.mkdir(exist_ok=True)
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print('[HTTPS Bridge] 🔐 首次运行，生成自签名证书（有效期 10 年）...')
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key = rsa.generate_private_key(public_exponent=65537, key_size=2048)
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subject = issuer = x509.Name([
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x509.NameAttribute(NameOID.COMMON_NAME, 'localhost'),
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])
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cert = (
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x509.CertificateBuilder()
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.subject_name(subject)
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.issuer_name(issuer)
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.public_key(key.public_key())
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.serial_number(x509.random_serial_number())
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.not_valid_before(datetime.datetime.utcnow())
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.not_valid_after(datetime.datetime.utcnow() + datetime.timedelta(days=3650))
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.add_extension(
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x509.SubjectAlternativeName([
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x509.DNSName('localhost'),
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x509.IPAddress(ipaddress.IPv4Address('127.0.0.1')),
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]),
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critical=False,
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)
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.sign(key, hashes.SHA256())
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)
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key_file.write_bytes(key.private_bytes(
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serialization.Encoding.PEM,
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serialization.PrivateFormat.TraditionalOpenSSL,
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serialization.NoEncryption(),
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))
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cert_file.write_bytes(cert.public_bytes(serialization.Encoding.PEM))
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print(f'[HTTPS Bridge] ✅ 证书已生成: {CERT_DIR}')
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return str(cert_file), str(key_file)
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# ── 请求处理 ──────────────────────────────────────────────────────────────────
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def _is_websocket(request):
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return (
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request.headers.get('Upgrade', '').lower() == 'websocket'
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and 'upgrade' in request.headers.get('Connection', '').lower()
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)
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def _proxy_headers(headers, skip_keys):
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return {k: v for k, v in headers.items() if k.lower() not in skip_keys}
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async def handle_websocket(request):
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"""双向代理 WebSocket 连接。"""
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import aiohttp
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from aiohttp import web
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ws_server = web.WebSocketResponse()
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await ws_server.prepare(request)
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target = f'ws://{COMFY_HOST}:{COMFY_PORT}{request.path_qs}'
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skip = {'host', 'upgrade', 'connection',
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'sec-websocket-key', 'sec-websocket-version', 'sec-websocket-extensions'}
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headers = _proxy_headers(request.headers, skip)
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try:
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async with aiohttp.ClientSession() as session:
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async with session.ws_connect(target, headers=headers) as ws_client:
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async def forward(src, dst, is_text_fn, send_str, send_bytes):
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async for msg in src:
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if dst.closed:
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break
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if msg.type == aiohttp.WSMsgType.TEXT:
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await send_str(msg.data)
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elif msg.type == aiohttp.WSMsgType.BINARY:
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await send_bytes(msg.data)
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elif msg.type in (aiohttp.WSMsgType.CLOSE, aiohttp.WSMsgType.ERROR):
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break
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await asyncio.gather(
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forward(ws_client, ws_server, None,
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ws_server.send_str, ws_server.send_bytes),
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forward(ws_server, ws_client, None,
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ws_client.send_str, ws_client.send_bytes),
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return_exceptions=True,
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)
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except Exception as e:
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print(f'[HTTPS Bridge] WS 错误: {e}')
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return ws_server
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async def handle_http(request):
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"""代理普通 HTTP 请求，支持流式响应（大文件/图片）。"""
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import aiohttp
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from aiohttp import web
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if request.method == 'OPTIONS':
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return web.Response(status=204, headers=CORS_HEADERS)
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target = f'http://{COMFY_HOST}:{COMFY_PORT}{request.path_qs}'
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skip = {'host', 'content-length', 'transfer-encoding'}
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headers = _proxy_headers(request.headers, skip)
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try:
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async with aiohttp.ClientSession() as session:
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async with session.request(
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request.method, target,
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headers=headers,
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data=await request.read(),
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allow_redirects=False,
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) as resp:
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resp_headers = {
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k: v for k, v in resp.headers.items()
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if k.lower() not in {'transfer-encoding'}
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}
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resp_headers.update(CORS_HEADERS)
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response = web.StreamResponse(status=resp.status, headers=resp_headers)
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await response.prepare(request)
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async for chunk in resp.content.iter_chunked(65536):
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await response.write(chunk)
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await response.write_eof()
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return response
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except aiohttp.ClientConnectorError:
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return web.Response(
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status=502,
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text=f'无法连接到 ComfyUI ({COMFY_HOST}:{COMFY_PORT})，请确认 ComfyUI 正在运行。',
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headers=CORS_HEADERS,
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)
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except Exception as e:
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return web.Response(status=500, text=f'代理错误: {e}', headers=CORS_HEADERS)
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async def handle_request(request):
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if _is_websocket(request):
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return await handle_websocket(request)
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return await handle_http(request)
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# ── 服务器启动 ────────────────────────────────────────────────────────────────
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async def _run_server(cert_file, key_file):
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from aiohttp import web
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ssl_ctx = ssl.SSLContext(ssl.PROTOCOL_TLS_SERVER)
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ssl_ctx.load_cert_chain(cert_file, key_file)
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app = web.Application()
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app.router.add_route('*', '/', handle_request)
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app.router.add_route('*', '/{path_info:.*}', handle_request)
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runner = web.AppRunner(app)
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await runner.setup()
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site = web.TCPSite(runner, '0.0.0.0', BRIDGE_PORT, ssl_context=ssl_ctx)
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await site.start()
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print(f'\n✅ [HTTPS Bridge] 已启动')
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print(f' 桥接地址: https://localhost:{BRIDGE_PORT}')
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print(f' 代理目标: http://{COMFY_HOST}:{COMFY_PORT}')
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print(f'\n⚠️ 首次使用需在浏览器授权证书（只需一次）：')
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print(f' 1. 打开 https://localhost:{BRIDGE_PORT}')
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print(f' 2. 点击「高级」→「继续访问 localhost」')
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print(f' 3. 看到空白页即表示成功\n')
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await asyncio.Event().wait() # 永久运行
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def _start_in_thread(cert_file, key_file):
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def _run():
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loop = asyncio.new_event_loop()
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asyncio.set_event_loop(loop)
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try:
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loop.run_until_complete(_run_server(cert_file, key_file))
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except OSError as e:
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if e.errno == 98 or 'address already in use' in str(e).lower():
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print(f'[HTTPS Bridge] ⚠️ 端口 {BRIDGE_PORT} 已被占用，桥接未启动。')
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print(f' 可通过环境变量更换端口: COMFY_BRIDGE_PORT=9998')
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else:
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print(f'[HTTPS Bridge] 启动失败: {e}')
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traceback.print_exc()
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thread = threading.Thread(target=_run, daemon=True, name='https-bridge')
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thread.start()
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# ── ComfyUI Node 注册 ─────────────────────────────────────────────────────────
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class HttpsBridgeNode:
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"""显示桥接状态的信息节点（可选使用，桥接服务在后台自动运行）。"""
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@classmethod
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def INPUT_TYPES(cls):
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return {'required': {}}
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RETURN_TYPES = ('STRING',)
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FUNCTION = 'get_status'
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CATEGORY = '🔒 HTTPS Bridge'
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OUTPUT_NODE = True
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def get_status(self):
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return (f'HTTPS Bridge: https://localhost:{BRIDGE_PORT}',)
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NODE_CLASS_MAPPINGS = {'HttpsBridgeNode': HttpsBridgeNode}
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NODE_DISPLAY_NAME_MAPPINGS = {'HttpsBridgeNode': '🔒 HTTPS Bridge Info'}
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# ── 入口：ComfyUI 加载时自动执行 ─────────────────────────────────────────────
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cert_file, key_file = generate_cert()
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if cert_file:
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_start_in_thread(cert_file, key_file)
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