cdns
所属分类：网络编程
开发工具：Rust
文件大小：0KB
下载次数：0
上传日期：2023-10-26 22:23:02
上 传 者：
sh-1993
说明： 通过Https服务器将查询中继到公共DNS的本地DNS服务器，
(Local DNS server to relay queries to public DNS-over-Https servers,)
文件列表:
Cargo.lock (36747, 2023-10-26)
Cargo.toml (799, 2023-10-26)
LICENSE (1064, 2023-10-26)
src/ (0, 2023-10-26)
src/cache.rs (3901, 2023-10-26)
src/config.rs (4305, 2023-10-26)
src/main.rs (2116, 2023-10-26)
src/resolver.rs (8461, 2023-10-26)
src/server.rs (631, 2023-10-26)
# cdns
A local DNS server to relay queries to public DNS-over-Https servers.
# Usage
Run `cdns /path/to/configuration.json`, it will listen on `127.0.0.1:53` for DNS queries. Then change the system DNS server to `127.0.0.1`.
# Configuration
The configuration file uses [JSON](https://www.json.org) format. It includes a `groups` object and a `rules` array.
Each key-value pair in `groups` specifies the group name and an array of servers. Each server consists of the URL of the DNS-over-HTTPS server and an optional array of well-known IPs for the server. The server URL should support POST for [RFC 8484](https://tools.ietf.org/html/rfc8484) UDP wire format.
Each `rule` in `rules` specifies a matching criterion for domains and the name of the server group to use for the matching domain. The matching criterion is a domain and will match any [subdomain](https://en.wikipedia.org/wiki/Subdomain) that is a child domain of it (including itself). For example, `example.com` matches:
- `example.com`
- `www.example.com`
- `a.b.example.com`
but does not match:
- `xample.com`
- `example.net`
- `example1.com`
- `2example.com`
- `www.exa3mple.com`
The rules are checked in the array order. If a rule matches the DNS query domain, the corresponding server group will be chosen, and the remaining rules are skipped.
If none of the rules matches the domain, the `default` group will be chosen if it exists, otherwise an arbitrary group will be chosen. The `groups` object should have at least one group specified. The `rules` array can be empty.
## Example Configuration
```json
{
"groups": {
"default": [
{
"url": "https://doh.pub/dns-query"
},
{
"url": "https://dns.alidns.com/dns-query",
"ips": [
"223.5.5.5",
"223.6.6.6",
"2400:3200::1",
"2400:3200:baba::1"
]
}
],
"overseas": [
{
"url": "https://cloudflare-dns.com/dns-query",
"ips": [
"1.1.1.1",
"1.0.0.1",
"2606:4700:4700::1111",
"2606:4700:4700::1001"
]
},
{
"url": "https://dns.google/dns-query",
"ips": [
"8.8.8.8",
"8.8.4.4",
"2001:4860:4860::8888",
"2001:4860:4860::8844"
]
}
]
},
"rules": [
[
"github.com",
"overseas"
]
]
}
```
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