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211 lines
8.2 KiB
Python
211 lines
8.2 KiB
Python
# -*- coding: utf-8 -*-
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"""被控端支持多个中转地址，自动故障切换。
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解决的痛点：
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匿名隧道地址老变，一变就得在被控端重配一次。
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实际场景：
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电脑和随身 WiFi 经常在**同一个局域网**（随身 WiFi 就是给电脑上网用的）。
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那就不用绕隧道了 —— 直连局域网中转更快（几十毫秒 vs 600 毫秒）、
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更稳（不依赖隧道），而且地址**永远不变**。
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做法：
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relay_url 支持用分号分隔多个地址，按顺序尝试：
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http://192.168.2.156:8080;https://relay.xxmxxs.top
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第一个通的就用它。局域网断了自动切隧道。
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主地址连不上时，还会去"局域网助手地址"查一下当前隧道地址
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（中转的 /url 接口），自动跟随地址变化。
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"""
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from __future__ import annotations
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import sys
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from pathlib import Path
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RELAY = Path(r"C:\Users\shu\Desktop\deepseekagent\LanRemote\windows"
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r"\lanremote\relay.py")
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RUN = Path(r"C:\Users\shu\Desktop\deepseekagent\LanRemote\windows"
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r"\run_agent.py")
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# ---------------- 1. 解析多地址 ----------------
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OLD_START = ''' def start(self, url: str) -> bool:
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"""开始连中转。url 形如 https://relay.example.com"""
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url = (url or "").strip().rstrip("/")
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if not url:
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self._log("没配置中转地址，跳过")
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return False
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if not url.startswith(("http://", "https://")):
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url = "https://" + url
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self.url = url'''
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NEW_START = ''' def start(self, url: str) -> bool:
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"""开始连中转。
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url 支持用**分号**分隔多个地址，按顺序尝试：
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http://192.168.2.156:8080;https://relay.xxmxxs.top
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为什么需要多个：
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* 电脑和随身 WiFi 常在同一局域网 —— 直连局域网中转更快更稳，
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而且地址永远不变（不用管隧道地址变来变去）
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* 电脑在外面时才走隧道
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"""
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candidates = []
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for piece in (url or "").replace(",", ";").split(";"):
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piece = piece.strip().rstrip("/")
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if not piece:
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continue
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if not piece.startswith(("http://", "https://")):
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piece = "https://" + piece
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if piece not in candidates:
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candidates.append(piece)
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if not candidates:
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self._log("没配置中转地址，跳过")
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return False
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self.candidates = candidates
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# 先探一遍，挑第一个通的
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chosen = self._pick_candidate(candidates)
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self.url = chosen
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if len(candidates) > 1:
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self._log(f"中转地址候选 {len(candidates)} 个，选用 {chosen}")'''
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# ---------------- 2. 挑一个能用的 ----------------
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ANCHOR = ''' def _ensure_device_id(self) -> str:'''
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NEW_METHODS = ''' def _probe(self, base: str, timeout: float = 8.0) -> bool:
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"""这个地址通不通（打一下 /v1/health）。"""
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try:
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request = urllib.request.Request(base + "/v1/health")
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context = _ssl_context() if base.startswith("https://") else None
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with urllib.request.urlopen(request, timeout=timeout,
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context=context) as response:
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if response.status != 200:
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return False
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body = response.read(4096).decode("utf-8", "replace")
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return '"ok"' in body
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except Exception: # noqa: BLE001
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return False
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def _pick_candidate(self, candidates: list) -> str:
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for base in candidates:
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if self._probe(base):
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return base
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self._log(f" {base} 不通，试下一个")
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# 都不通也先返回第一个，让主循环去重试
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return candidates[0]
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def _refresh_url(self) -> None:
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"""主地址连不上时，去候选里找找有没有能用的。
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如果某个候选本身就是局域网中转，还能顺便问它
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「现在的隧道地址是什么」（/url 接口），自动跟随地址变化。
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"""
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for base in list(self.candidates):
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if base == self.url:
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continue
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if not self._probe(base, timeout=5):
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continue
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self._log(f"切换到备用中转地址：{base}")
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self.url = base
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return
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def _ensure_device_id(self) -> str:'''
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# ---------------- 3. 连不上时换地址 ----------------
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OLD_RUN = ''' except Exception as exc: # noqa: BLE001
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self.online = False
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self.last_error = f"{type(exc).__name__}: {exc}"
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self._log(f"中转连接出问题：{self.last_error}")
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# 网络断了：把当前会话关掉，让上层重开
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self._drop_socket()
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time.sleep(backoff)
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backoff = min(RETRY_MAX, backoff * 1.6)'''
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NEW_RUN = ''' except Exception as exc: # noqa: BLE001
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self.online = False
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self.last_error = f"{type(exc).__name__}: {exc}"
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self._log(f"中转连接出问题：{self.last_error}")
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# 网络断了：把当前会话关掉，让上层重开
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self._drop_socket()
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self.token = ""
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# 连续失败几次就换一个候选地址试试
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fail_count = getattr(self, "_fail_count", 0) + 1
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self._fail_count = fail_count
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if fail_count >= 3 and len(getattr(self, "candidates", [])) > 1:
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self._fail_count = 0
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self._refresh_url()
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time.sleep(backoff)
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backoff = min(RETRY_MAX, backoff * 1.6)'''
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# ---------------- 4. __init__ 加字段 ----------------
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OLD_INIT = ''' self.url = ""
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self.device_id = ""'''
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NEW_INIT = ''' self.url = ""
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self.candidates: list = []
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self._fail_count = 0
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self.device_id = ""'''
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# ---------------- 5. status 里显示候选 ----------------
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OLD_STATUS = ''' "url": self.url,'''
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NEW_STATUS = ''' "url": self.url,
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"candidates": list(self.candidates),'''
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def main() -> int:
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text = RELAY.read_text(encoding="utf-8")
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ok = True
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if "self.candidates" in text:
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print(" 已经加过多地址支持")
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return 0
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for old, new, tag in ((OLD_INIT, NEW_INIT, "__init__ 加字段"),
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(OLD_START, NEW_START, "start() 解析多地址"),
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(ANCHOR, NEW_METHODS, "探测/切换/刷新方法"),
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(OLD_RUN, NEW_RUN, "失败次数到了就换地址"),
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(OLD_STATUS, NEW_STATUS, "status 显示候选")):
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if old not in text:
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print(f" [失败] {tag} —— 锚点没找到")
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ok = False
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continue
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text = text.replace(old, new, 1)
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print(f" {tag}")
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RELAY.write_text(text, encoding="utf-8", newline="\n")
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import ast
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try:
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ast.parse(text)
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print(" relay.py 语法 OK")
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except SyntaxError as exc:
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print(f" 语法错误: {exc}")
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ok = False
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# ---------------- 6. CLI 说明 ----------------
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run_text = RUN.read_text(encoding="utf-8")
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old_help = ''' parser.add_argument("--relay", default=None, metavar="地址",
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help="设置中转服务器地址（跨网络用），传空字符串关闭")'''
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new_help = ''' parser.add_argument("--relay", default=None, metavar="地址",
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help="设置中转服务器地址（跨网络用）。"
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"可用分号分隔多个，按顺序尝试，例如："
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"http://192.168.2.156:8080;https://relay.xxmxxs.top"
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" —— 局域网优先，断了自动切隧道。"
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"传空字符串关闭")'''
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if old_help in run_text:
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run_text = run_text.replace(old_help, new_help, 1)
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RUN.write_text(run_text, encoding="utf-8", newline="\n")
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print(" run_agent.py: --relay 帮助已更新")
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return 0 if ok else 1
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if __name__ == "__main__":
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sys.exit(main())
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