自定义规则代理

EAF浏览器是基于QWebEngine来实现的，QWebEngine因为受限于底层Chromium代码的实现，QWebEngine无法像QWebKit那样，通过Qt代码来实现基于自定义规则的代理路由。

如果修改Qt5的源码则非常麻烦，一个比较合理解决方案是 “通过引入第二个本地代理来变相实现规则代理”，简单逻辑如下图：

EAF Browser ---> Transfer Proxy ---> Need Proxy ------> Local Proxy ---> Proxy Server ---> Target Website
                       |
                       ------------> No Need Proxy ---> Target Website

用Clash作为规则代理(Transfer Proxy), 充当EAF浏览器和本地代理客户端的中间代理，如果一个域名匹配代理规则，Clash就把流量定向到本地代理客户端，再由本地代理客户端发送请求给代理服务器。如果一个域名匹配直连规则，Clash直接略过本地代理客户端直接访问目标网站。

安装Clash

首先从Clash安装Clash, Arch直接用pacman安装即可。

配置Clash

首先你需要在本地配置一个本地socks5代理，可以参考我的另外一篇文章最佳代理实践。

比如本地socks5代理是 127.0.0.1 的 1080 端口（如果不是，请修改下面配置中 proxies 字段内容），然后新建一个 config.yml 配置文件：

# config.yml
# 本地http(s)代理端口
port: 18080
# 本地socks5代理端口
socks-port: 10808
# 是否允许局域网中其他机器访问
allow-lan: false
# 仅当allow-lan设置为true时生效
# '*': 绑定所有IP
# 192.168.122.11:绑定单个IPV4
# "[aaaa::a8aa:ff:fe09:57d8]":绑定单个IPV6
bind-address: '*'
# 运行模式
# rule: 基于规则
# global: 全局代理
# direct: 不代理
mode: rule
# 日志输出级别
# info / warning / error / debug / silent
log-level: info
# 当设置为false时，不解析IPV6地址
ipv6: false
# 流量出口
interface-name: wlp4s0

# DNS 设置
dns:
  enable: false
  listen: 0.0.0.0:53
  # ipv6: false # when the false, response to AAAA questions will be empty

  # These nameservers are used to resolve the DNS nameserver hostnames below.
  # Specify IP addresses only
  default-nameserver:
    - 114.114.114.114
    - 8.8.8.8
  enhanced-mode: redir-host # or fake-ip
  fake-ip-range: 198.18.0.1/16 # Fake IP addresses pool CIDR
  # use-hosts: true # lookup hosts and return IP record

  # Hostnames in this list will not be resolved with fake IPs
  # i.e. questions to these domain names will always be answered with their
  # real IP addresses
  # fake-ip-filter:
  #   - '*.lan'
  #   - localhost.ptlogin2.qq.com

  # Supports UDP, TCP, DoT, DoH. You can specify the port to connect to.
  # All DNS questions are sent directly to the nameserver, without proxies
  # involved. Clash answers the DNS question with the first result gathered.
  nameserver:
    - 114.114.114.114 # default value
    - 8.8.8.8 # default value
    - tls://dns.rubyfish.cn:853 # DNS over TLS
    - https://1.1.1.1/dns-query # DNS over HTTPS
    - dhcp://en0 # dns from dhcp

  # When `fallback` is present, the DNS server will send concurrent requests
  # to the servers in this section along with servers in `nameservers`.
  # The answers from fallback servers are used when the GEOIP country
  # is not `CN`.
  # fallback:
  #   - tcp://1.1.1.1

  # If IP addresses resolved with servers in `nameservers` are in the specified
  # subnets below, they are considered invalid and results from `fallback`
  # servers are used instead.
  #
  # IP address resolved with servers in `nameserver` is used when
  # `fallback-filter.geoip` is true and when GEOIP of the IP address is `CN`.
  #
  # If `fallback-filter.geoip` is false, results from `nameserver` nameservers
  # are always used if not match `fallback-filter.ipcidr`.
  #
  # This is a countermeasure against DNS pollution attacks.
  # fallback-filter:
  #   geoip: true
  #   geoip-code: CN
  #   ipcidr:
  #     - 240.0.0.0/4
  #   domain:
  #     - '+.google.com'
  #     - '+.facebook.com'
  #     - '+.youtube.com'

  # Lookup domains via specific nameservers
  # nameserver-policy:
  #   'www.baidu.com': '114.114.114.114'
  #   '+.internal.crop.com': '10.0.0.1'
proxies:
# 代理服务器配置，更多的代理设置请查看：https://lancellc.gitbook.io/clash/clash-config-file/an-example-configuration-file
  - name: "local-socks5"
    type: socks5
    server: localhost
    port: 1080

proxy-groups:
  # 组策略
  # url-test 自动选择最快的节点进行访问.
  - name: "auto"   #策略名
    type: url-test
    proxies:
      - local-socks5
    # tolerance: 150
    url: 'http://www.gstatic.com/generate_204'
    interval: 300

rules:
# 规则策略
# 当一级域名是google.com时使用auto策略
  - DOMAIN-SUFFIX,google.com,auto
  - DOMAIN-SUFFIX,github.com,auto
  - DOMAIN-SUFFIX,gitee.com,DIRECT
  - DOMAIN-SUFFIX,emacs-china.org,DIRECT
  - DOMAIN-SUFFIX,ruby-china.org,DIRECT
  - DOMAIN-SUFFIX,baidu.com,DIRECT
# 当域名含有关键词google时使用auto
  - DOMAIN-KEYWORD,google,auto
  - DOMAIN,google.com,auto
# 当一级域名是ad.com时拒绝访问，可以用于屏蔽广告
  - DOMAIN-SUFFIX,ad.com,REJECT
# 内网服务ip不走代理
  - SRC-IP-CIDR,192.168.1.0/32,DIRECT
  - SRC-IP-CIDR,10.0.0.0/8,DIRECT
# 可选参数 "no-resolve" ，基于IP的规则 (GEOIP, IP-CIDR, IP-CIDR6)
  - IP-CIDR,127.0.0.0/8,DIRECT
  - GEOIP,CN,DIRECT
# 目标端口是8888时，直接访问不走代理
  - SRC-PORT,8888,DIRECT
# 默认规则
  - MATCH,auto

接着运行命令 clash -f config.yml 来启动Clash，Clash会对外暴露一个 http 类型的 18080 端口代理。

配置EAF

最后在Emacs中通过如下配置来设置EAF使用Clash代理：

(setq eaf-proxy-type "http")
(setq eaf-proxy-host "127.0.0.1")
(setq eaf-proxy-port "18080")