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309 lines
12 KiB
Python
309 lines
12 KiB
Python
# -*- coding: utf-8 -*-
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"""安卓端：局域网断了就无缝切回中转服务器。
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用户要求：
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"检测到局域网连不上了，就无缝链接到中转服务器"
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场景：
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手表和电脑本来在同一 WiFi，走局域网直连（快、稳）。
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然后手表走出 WiFi 范围了 / 电脑换了网络 / WiFi 断了。
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→ 应该**自动**切回中转，用户不用管。
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做法：
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1. 记住"当前是局域网直连"以及连的是谁
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2. onDisconnected 时，如果刚才走的是局域网 -> 自动经中转重连
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3. 反过来：中转也断了就重试几次，别立刻放弃
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4. 全程给用户提示，但不能弹回连接页打断操作
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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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MAIN = Path(r"C:\Users\shu\Desktop\deepseekagent\LanRemote\android\src"
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r"\com\lanremote\watch\MainActivity.java")
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# ---------- 1. 加状态字段 ----------
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FIELD_OLD = ''' private void connect(final String host, final int port, final String code,
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final String token, final String key) {
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if (busy) {
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return;
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}'''
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FIELD_NEW = ''' // ---- 断线自动切换用的状态 ----
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/** 当前是不是走局域网直连（断了要切回中转）。 */
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private volatile boolean lanDirect;
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/** 刚才连的地址/配对码/令牌，切回中转时要用。 */
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private volatile String lastHost = "";
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private volatile int lastPort;
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private volatile String lastCode = "";
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private volatile String lastToken = "";
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/** 正在自动切换中，避免重入。 */
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private volatile boolean autoSwitching;
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/** 自动重试次数，防止无限刷屏。 */
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private int autoRetry;
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private void connect(final String host, final int port, final String code,
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final String token, final String key) {
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if (busy) {
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return;
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}'''
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# ---------- 2. connect 时记录状态 ----------
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REC_OLD = ''' busy = true;
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setStatus("正在连接 " + host + ":" + port + " …", C_WARN);
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appendLog("连接 " + host + ":" + port);'''
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REC_NEW = ''' busy = true;
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// 记下来：断线时要用这些信息切回中转 / 重连
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lastHost = host;
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lastPort = port;
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if (code != null) {
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lastCode = code;
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}
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if (token != null) {
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lastToken = token;
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}
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setStatus("正在连接 " + host + ":" + port + " …", C_WARN);
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appendLog("连接 " + host + ":" + port);'''
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# ---------- 3. 成功连上后标记是不是局域网 ----------
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MODE_OLD = ''' if (serverLabel != null) {
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serverLabel.setText("已连接 " + (finalName == null ? host : finalName));
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}'''
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MODE_NEW = ''' // 记住这次是不是局域网直连 ——
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// 局域网断了要自动切回中转，靠的就是这个标记。
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lanDirect = finalLanDirect;
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autoRetry = 0;
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if (serverLabel != null) {
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serverLabel.setText("已连接 "
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+ (finalName == null ? host : finalName)
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+ (finalLanDirect ? "（局域网）" : "（中转）"));
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}'''
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# 把"是不是局域网"这个判断结果传出来
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LAN_FLAG_OLD = ''' String error = null;
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String newToken = null;
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String serverName = null;
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boolean ok = false;'''
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LAN_FLAG_NEW = ''' String error = null;
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String newToken = null;
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String serverName = null;
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boolean ok = false;
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// 这次连上的是局域网还是中转（决定断线后怎么救）
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boolean usedLan = !relayUrl().isEmpty() ? false : true;'''
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# 直连成功时置 true
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DIRECT_OK_OLD = ''' appendLog("已切换为局域网直连：" + directIp
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+ ":" + directPort);'''
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DIRECT_OK_NEW = ''' appendLog("已切换为局域网直连：" + directIp
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+ ":" + directPort);
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usedLan = true;'''
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# 退回中转时置 false
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FALLBACK_OLD = ''' appendLog("直连失败，退回中转："
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+ Json.str(direct, "error", "未知原因"));'''
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FALLBACK_NEW = ''' appendLog("直连失败，退回中转："
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+ Json.str(direct, "error", "未知原因"));
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usedLan = false;'''
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# final 变量
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FINAL_OLD = ''' final boolean success = ok;
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final String finalError = error;
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final String finalToken = newToken;
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final String finalName = serverName;'''
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FINAL_NEW = ''' final boolean success = ok;
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final String finalError = error;
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final String finalToken = newToken;
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final String finalName = serverName;
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final boolean finalLanDirect = usedLan && ok;'''
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# ---------- 4. onDisconnected 自动切回中转 ----------
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DISC_OLD = ''' public void onDisconnected(final String reason) {
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// 换连另一台电脑后，「功能」页不能还显示上一台的分组
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featureCache = null;
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featureGroups = null; ui.post(new Runnable() {'''
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DISC_NEW = ''' public void onDisconnected(final String reason) {
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// 换连另一台电脑后，「功能」页不能还显示上一台的分组
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featureCache = null;
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featureGroups = null;
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// ★ 局域网断了 -> 无缝切回中转服务器。
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// 用户从 WiFi 走出去、或者电脑换了网络，都会走到这里。
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// 不打断操作，自动接上。
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if (lanDirect && !autoSwitching) {
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String relay = relayUrl();
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if (!relay.isEmpty()) {
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autoSwitching = true;
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appendLog("局域网断了（" + reason + "），正在切到中转服务器…");
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ui.post(new Runnable() {
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@Override
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public void run() {
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setStatus("局域网断了，正在切到中转服务器…", C_WARN);
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}
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});
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ui.postDelayed(new Runnable() {
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@Override
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public void run() {
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switchToRelay();
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}
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}, 600);
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return;
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}
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appendLog("局域网断了，但没有配中转地址，只能断开");
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}
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// 中转也断了：重试几次再放弃（这条线路本来就会抖）
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if (!lanDirect && autoRetry < 3 && !autoSwitching) {
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autoRetry++;
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appendLog("中转断了（" + reason + "），第 " + autoRetry + " 次自动重连…");
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ui.post(new Runnable() {
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@Override
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public void run() {
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setStatus("中转断了，正在重连（第 " + autoRetry + " 次）…", C_WARN);
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}
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});
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ui.postDelayed(new Runnable() {
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@Override
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public void run() {
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switchToRelay();
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}
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}, 700 * autoRetry);
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return;
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}
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autoRetry = 0; ui.post(new Runnable() {'''
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DISC_TAIL_OLD = ''' appendLog("断开：" + reason);
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}
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});
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}'''
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DISC_TAIL_NEW = ''' appendLog("断开：" + reason);
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lanDirect = false;
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}
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});
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}
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/**
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* 经中转重连（局域网断了、或者中转抖了之后自动调用）。
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*
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* 用后台线程做，不阻塞界面；成功了就继续用，失败才弹回连接页。
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*/
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private void switchToRelay() {
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final String relay = relayUrl();
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if (relay.isEmpty()) {
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autoSwitching = false;
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return;
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}
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final String code = lastCode;
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final String token = lastToken;
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io.execute(new Runnable() {
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@Override
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public void run() {
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String error = null;
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boolean ok = false;
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String newToken = token;
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String name = lastHost;
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try {
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Map<String, Object> reply = client.connectViaRelay(
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relay, code, token, MainActivity.this, 40000);
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ok = Json.bool(reply, "ok", false);
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if (ok) {
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newToken = Json.str(reply, "token",
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token == null ? "" : token);
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name = Json.str(reply, "serverName", lastHost);
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} else {
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error = Json.str(reply, "error", "中转连接被拒");
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}
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} catch (final IOException exc) {
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error = describeNetworkError(exc, relay);
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}
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final boolean success = ok;
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final String finalError = error;
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final String finalToken = newToken;
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final String finalName = name;
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final String usedCode = code;
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ui.post(new Runnable() {
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@Override
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public void run() {
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autoSwitching = false;
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if (success) {
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lanDirect = false;
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lastToken = finalToken;
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if (finalToken != null && !finalToken.isEmpty()) {
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store.saveDevice(
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DeviceStore.deviceKey(lastHost, lastPort,
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store.deviceId()),
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finalName == null ? lastHost : finalName,
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lastHost, lastPort, finalToken);
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refreshDeviceList();
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}
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if (serverLabel != null) {
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serverLabel.setText("已连接 "
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+ (finalName == null ? lastHost : finalName)
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+ "（中转）");
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}
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appendLog("已切到中转服务器，连接恢复");
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setStatus("已切到中转（局域网不可用）", C_OK);
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showControlPanel();
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} else {
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autoRetry = 0;
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lanDirect = false;
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setStatus("中转也连不上：" + finalError, C_DANGER);
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appendLog("切中转失败：" + finalError);
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showConnectPanel();
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}
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}
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});
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}
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});
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}'''
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def patch(pairs, label: str) -> bool:
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text = MAIN.read_text(encoding="utf-8")
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ok = True
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for old, new, tag in pairs:
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if old not in text:
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print(f" [{label}] [跳过] {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" [{label}] {tag}")
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MAIN.write_text(text, encoding="utf-8", newline="\n")
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return ok
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def main() -> int:
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text = MAIN.read_text(encoding="utf-8")
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if "switchToRelay" in text:
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print(" 已经加过自动切中转")
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return 0
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ok = patch([
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(FIELD_OLD, FIELD_NEW, "加自动切换状态字段"),
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(REC_OLD, REC_NEW, "connect 记录状态"),
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(LAN_FLAG_OLD, LAN_FLAG_NEW, "加 usedLan 标记"),
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(DIRECT_OK_OLD, DIRECT_OK_NEW, "直连成功置 true"),
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(FALLBACK_OLD, FALLBACK_NEW, "退回中转置 false"),
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(FINAL_OLD, FINAL_NEW, "传出 finalLanDirect"),
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(MODE_OLD, MODE_NEW, "连上后标记模式"),
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(DISC_OLD, DISC_NEW, "断线自动切中转"),
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(DISC_TAIL_OLD, DISC_TAIL_NEW, "switchToRelay 方法"),
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], "MainActivity")
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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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