Merge pull request #170 from HyNetwork/wip-ipv6-only-mode

ipv6 only mode
apernet · Dec 10, 2021 · 3f598b8 · 3f598b8
2 parents d7bda39 + a6c73b6
commit 3f598b8
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Showing 5 changed files with 23 additions and 2 deletions.
diff --git a/README.md b/README.md
@@ -184,7 +184,8 @@ encryption. If you need a proxy, just use our proxy modes.
   "recv_window_conn": 15728640, // QUIC stream receive window
   "recv_window_client": 67108864, // QUIC connection receive window
   "max_conn_client": 4096, // Max concurrent connections per client
-  "disable_mtu_discovery": false // Disable Path MTU Discovery (RFC 8899)
+  "disable_mtu_discovery": false, // Disable Path MTU Discovery (RFC 8899)
+  "ipv6_only": false // Only resolve domains to IPv6 address
 }
 ```
 

diff --git a/README.zh.md b/README.zh.md
@@ -170,7 +170,8 @@ Hysteria 是一个功能丰富的，专为恶劣网络环境进行优化的网
   "recv_window_conn": 15728640, // QUIC stream receive window
   "recv_window_client": 67108864, // QUIC connection receive window
   "max_conn_client": 4096, // 单客户端最大活跃连接数
-  "disable_mtu_discovery": false // 禁用 MTU 探测 (RFC 8899)
+  "disable_mtu_discovery": false, // 禁用 MTU 探测 (RFC 8899)
+  "ipv6_only": false // 强制把域名解析成 IPv6 地址
 }
 ```
 

diff --git a/cmd/config.go b/cmd/config.go
@@ -46,6 +46,7 @@ type serverConfig struct {
 	ReceiveWindowClient uint64 `json:"recv_window_client"`
 	MaxConnClient       int    `json:"max_conn_client"`
 	DisableMTUDiscovery bool   `json:"disable_mtu_discovery"`
+	IPv6Only            bool   `json:"ipv6_only"`
 }
 
 func (c *serverConfig) Check() error {

diff --git a/cmd/server.go b/cmd/server.go
@@ -128,6 +128,10 @@ func server(config *serverConfig) {
 	if len(config.Obfs) > 0 {
 		obfuscator = obfs.NewXPlusObfuscator([]byte(config.Obfs))
 	}
+	// IPv6 only mode
+	if config.IPv6Only {
+		transport.DefaultTransport = transport.IPv6OnlyTransport
+	}
 	// ACL
 	var aclEngine *acl.Engine
 	if len(config.ACL) > 0 {

diff --git a/pkg/transport/transport.go b/pkg/transport/transport.go
@@ -22,6 +22,12 @@ var DefaultTransport Transport = &defaultTransport{
 	Timeout: 8 * time.Second,
 }
 
+var IPv6OnlyTransport Transport = &ipv6OnlyTransport{
+	defaultTransport{
+		Timeout: 8 * time.Second,
+	},
+}
+
 type defaultTransport struct {
 	Timeout time.Duration
 }
@@ -67,3 +73,11 @@ func (t *defaultTransport) LocalListenTCP(laddr *net.TCPAddr) (*net.TCPListener,
 func (t *defaultTransport) LocalListenUDP(laddr *net.UDPAddr) (*net.UDPConn, error) {
 	return net.ListenUDP("udp", laddr)
 }
+
+type ipv6OnlyTransport struct {
+	defaultTransport
+}
+
+func (t *ipv6OnlyTransport) LocalResolveIPAddr(address string) (*net.IPAddr, error) {
+	return net.ResolveIPAddr("ip6", address)
+}