Add wireguard inbound (en)

docs/.vuepress/config/sidebar/en.ts

@@ -41,6 +41,7 @@ export const sidebarEn: SidebarConfig = {
         '/en/config/inbounds/trojan.md',
         '/en/config/inbounds/vless.md',
         '/en/config/inbounds/vmess.md',
+        '/en/config/inbounds/wireguard.md',
       ],
     },
     {

docs/en/config/inbounds/wireguard.md

@@ -0,0 +1,71 @@
+# Wireguard
+
+User-space implementation of the Wireguard protocol.
+
+::: danger
+**The Wireguard protocol is not specifically designed for circumvention purposes. If used as the outer layer for circumvention, its characteristics may lead to server blocking.**
+:::
+
+## InboundConfigurationObject
+
+```json
+{
+  "secretKey": "PRIVATE_KEY",
+  "peers": [
+    {
+      "publicKey": "PUBLIC_KEY",
+      "allowedIPs":[""]
+    }
+  ],
+  "kernelMode": true, // optional, default true if it's supported and permission is sufficient
+  "mtu": 1420, // optional, default 1420
+}
+```
+
+> `secretKey`: string
+
+Private key. Required.
+
+> `mtu`: int
+
+Fragmentation size of the underlying Wireguard tun.
+
+<details>
+<summary>MTU Calculation Method</summary>
+
+The structure of a Wireguard packet is as follows:
+
+```
+- 20-byte IPv4 header or 40 byte IPv6 header
+- 8-byte UDP header
+- 4-byte type
+- 4-byte key index
+- 8-byte nonce
+- N-byte encrypted data
+- 16-byte authentication tag
+```
+
+`N-byte encrypted data` is the MTU value we need. Depending on whether the endpoint is IPv4 or IPv6, the specific values can be 1440 (IPv4) or 1420 (IPv6). If in a special environment, subtract additional bytes accordingly (e.g., subtract 8 more bytes for PPPoE over home broadband).
+
+</details>
+
+> `peers`: \[ [Peers](#peers) \]
+
+List of peer servers, where each entry is a server configuration.
+
+### Peers
+
+```json
+{
+  "publicKey": "PUBLIC_KEY",
+  "allowedIPs": ["0.0.0.0/0"] // optional, default ["0.0.0.0/0", "::/0"]
+}
+```
+
+> `publicKey`: string
+
+Public key, used for verification.
+
+> `allowedIPs`: string array
+
+Allowed source IPs.