docs(dns): add docs for #649 (#687)

docs/en/configuration/dns.md

@@ -2,6 +2,67 @@
 
 dae will intercept all UDP traffic to port 53 and sniff DNS. Here gives some examples and templates for DNS configuration.
 
+# Schema
+
+DoH3
+
+```
+h3://<host>:<port>/<path>
+http3://<host>:<port>/<path>
+
+default port: 443
+default path: /dns-query
+```
+
+DoH
+
+```
+https://<host>:<port>/<path>
+
+default port: 443
+default path: /dns-query
+```
+
+DoT
+
+```
+tls://<host>:<port>
+
+default port: 853
+```
+
+DoQ
+
+```
+quic://<host>:<port>
+
+default port: 853
+```
+
+UDP
+
+```
+udp://<host>:<port>
+
+default port: 53
+```
+
+TCP
+
+```
+tcp://<host>:<port>
+
+default port: 53
+```
+
+TCP and UDP
+
+```
+tcp+udp://<host>:<port>
+
+default port: 53
+```
+
 ## Examples
 
 ```shell
@@ -18,15 +79,28 @@ dns {
     }
 
     upstream {
-        # Value can be scheme://host:port.
-        # Scheme list: tcp, udp, tcp+udp. Ongoing: https, tls, quic.
+        # Scheme list: tcp, udp, tcp+udp, https, tls, http3, h3, quic, details see above Schema.
         # If host is a domain and has both IPv4 and IPv6 record, dae will automatically choose
         # IPv4 or IPv6 to use according to group policy (such as min latency policy).
         # Please make sure DNS traffic will go through and be forwarded by dae, which is REQUIRED for domain routing.
         # If dial_mode is "ip", the upstream DNS answer SHOULD NOT be polluted, so domestic public DNS is not recommended.
 
         alidns: 'udp://dns.alidns.com:53'
         googledns: 'tcp+udp://dns.google:53'
+
+        # alih3: 'h3://dns.alidns.com:443'
+        # alih3_path: 'h3://dns.alidns.com:443/dns-query'
+        # alihttp3: 'http3://dns.alidns.com:443'
+        # alihttp3_path: 'http3://dns.alidns.com:443/dns-query'
+        # ali_quic: 'quic://dns.alidns.com:853'
+
+        # h3_cusotm_path: 'h3://dns.example.com:443/custom-path'
+        # http3_cusotm_path: 'http3://dns.example.com:443/custom-path'
+
+        # ali_doh: 'https://dns.alidns.com:443'
+        # ali_dot: 'tls://dns.alidns.com:853'
+
+        # doh_cusotm_path: 'https://dns.example.com:443/custom-path'
     }
     # The routing format of 'request' and 'response' is similar with section 'routing'.
     # See https://github.com/daeuniverse/dae/blob/main/docs/en/configuration/routing.md

docs/zh/configuration/dns.md

@@ -2,6 +2,67 @@
 
 dae 拦截目标端口为 53 的 UDP 流量并嗅探 DNS，以下为 DNS 配置的示例和模板。
 
+# Schema
+
+DoH3
+
+```
+h3://<host>:<port>/<path>
+http3://<host>:<port>/<path>
+
+默认端口: 443
+默认 path: /dns-query
+```
+
+DoH
+
+```
+https://<host>:<port>/<path>
+
+默认端口: 443
+默认 path: /dns-query
+```
+
+DoT
+
+```
+tls://<host>:<port>
+
+默认端口: 853
+```
+
+DoQ
+
+```
+quic://<host>:<port>
+
+默认端口: 853
+```
+
+UDP
+
+```
+udp://<host>:<port>
+
+默认端口: 53
+```
+
+TCP
+
+```
+tcp://<host>:<port>
+
+默认端口: 53
+```
+
+TCP and UDP
+
+```
+tcp+udp://<host>:<port>
+
+默认端口: 53
+```
+
 ## 示例
 
 ```shell
@@ -16,15 +77,28 @@ dns {
     }
 
     upstream {
-        # 格式为“协议://主机:端口”
-        # 支持协议：tcp, udp, tcp+udp（对于https, tls, quic的支持孵化中）。
+        # 支持协议：tcp, udp, tcp+udp, https, tls, http3, h3, quic, 详情见上面的 Schema。
         # 若主机为域名且具有 A 和 AAAA 记录，dae 自动选择 IPv4 或 IPv6 进行连接,
         # 是否走代理取决于全局的 routing（不是下面 dns 配置部分的 routing），节点选择取决于 group 的策略。
         # 请确保DNS流量经过dae且由dae转发，按域名分流需要如此！
         # 若 dial_mode 设为 'ip'，请确保上游 DNS 无污染，不推荐使用国内公共 DNS。
 
         alidns: 'udp://dns.alidns.com:53'
         googledns: 'tcp+udp://dns.google:53'
+
+        # alih3: 'h3://dns.alidns.com:443'
+        # alih3_path: 'h3://dns.alidns.com:443/dns-query'
+        # alihttp3: 'http3://dns.alidns.com:443'
+        # alihttp3_path: 'http3://dns.alidns.com:443/dns-query'
+        # ali_quic: 'quic://dns.alidns.com:853'
+
+        # h3_cusotm_path: 'h3://dns.example.com:443/custom-path'
+        # http3_cusotm_path: 'http3://dns.example.com:443/custom-path'
+
+        # ali_doh: 'https://dns.alidns.com:443'
+        # ali_dot: 'tls://dns.alidns.com:853'
+
+        # doh_cusotm_path: 'https://dns.example.com:443/custom-path'
     }
     # 'request' 和 'response' 的 routing 格式和全局的 'routing' 类似。
     # 参考 https://github.com/daeuniverse/dae/blob/main/docs/zh/configuration/routing.md

example.dae

@@ -146,14 +146,29 @@ dns {
     #}
 
     upstream {
-        # Value can be scheme://host:port, where the scheme can be tcp/udp/tcp+udp.
+        # Value can be scheme://host:port, where the scheme can be tcp/udp/tcp+udp/h3/http3/quic/https/tls.
+        # If the protocol is h3/http3/https, it supports setting a custom path, that is, the format can be "protocol://host:port/custom path".
         # If host is a domain and has both IPv4 and IPv6 record, dae will automatically choose
         # IPv4 or IPv6 to use according to group policy (such as min latency policy).
         # Please make sure DNS traffic will go through and be forwarded by dae, which is REQUIRED for domain routing.
         # If dial_mode is "ip", the upstream DNS answer SHOULD NOT be polluted, so domestic public DNS is not recommended.
 
         alidns: 'udp://dns.alidns.com:53'
         googledns: 'tcp+udp://dns.google:53'
+
+        # alih3: 'h3://dns.alidns.com:443'
+        # alih3_path: 'h3://dns.alidns.com:443/dns-query'
+        # alihttp3: 'http3://dns.alidns.com:443'
+        # alihttp3_path: 'http3://dns.alidns.com:443/dns-query'
+        # ali_quic: 'quic://dns.alidns.com:853'
+
+        # h3_cusotm_path: 'h3://dns.example.com:443/custom-path'
+        # http3_cusotm_path: 'http3://dns.example.com:443/custom-path'
+
+        # ali_doh: 'https://dns.alidns.com:443'
+        # ali_dot: 'tls://dns.alidns.com:853'
+
+        # doh_cusotm_path: 'https://dns.example.com:443/custom-path'
     }
     routing {
         # According to the request of dns query, decide to use which DNS upstream.