hysteria2: add udphop & salamander

[LjhAUMEM]

• Refactor hysteria2
• Update 2.8.2
• Add udphop
• Add salamander

example

{
  "log": { "loglevel": "debug" },
  "inbounds": [
    {
      "listen": "127.0.0.1",
      "port": 1080,
      "protocol": "socks",
      "settings": {
        "auth": "noauth",
        "udp": true
      }
    }
  ],
  "outbounds": [
    {
      "protocol": "hysteria2",
      "settings": {
        "servers": [
          {
            "address": "127.0.0.1",
            "port": 1081
          }
        ]
      },
      "streamSettings": {
        "network": "hysteria2",
        "hy2Settings": {
          "auth": "5783a3e7-e373-51cd-8642-c83782b807c5",
          "udpHop": {
            "ports": "20000-50000",
            "intervalMin": 5,
            "IntervalMax": 10
          },
          "salamander": "5783a3e7",
          "congestion": "bbr",
          "bbrProfile": "standard"
        },
        "security": "tls",
        "tlsSettings": {
          "allowInsecure": true,
          "pinnedPeerCertSha256": "f166838b984afe614cba418bf2ace575189d822e94c751428e41bb6a7b6f1465"
        }
      }
    }
  ]
}

{
  "log": { "loglevel": "debug" },
  "inbounds": [
    {
      // "listen": "127.0.0.1",
      "port": 1081,
      "protocol": "hysteria2",
      "settings": {
        // "packetEncoding": "Packet"
      },
      "streamSettings": {
        "network": "hysteria2",
        "hy2Settings": {
          "auth": "5783a3e7-e373-51cd-8642-c83782b807c5",
          "salamander": "5783a3e7",
          "congestion": "bbr",
          "bbrProfile": "standard"
        },
        "security": "tls",
        "tlsSettings": {
          "alpn": ["h3"],
          "certificates": [
            {
              "certificate": [
                "-----BEGIN CERTIFICATE-----",
                "MIIBnTCCAUKgAwIBAgIRAKKw0E+MG4CqeIxeCZtyfWMwCgYIKoZIzj0EAwIwJjER",
                "MA8GA1UEChMIWHJheSBJbmMxETAPBgNVBAMTCFhyYXkgSW5jMB4XDTI2MDQxMTE0",
                "NDg1OFoXDTI2MDcxMDE1NDg1OFowJjERMA8GA1UEChMIWHJheSBJbmMxETAPBgNV",
                "BAMTCFhyYXkgSW5jMFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAEpRY9GoCoKoKx",
                "bp0xH9OQiHmBhogW7nCRh7TtGvTwfyef6DSqUl26Ql3LxTAqNsK84g6EOO5hXkgN",
                "PYRhOnYRiKNRME8wDgYDVR0PAQH/BAQDAgWgMBMGA1UdJQQMMAoGCCsGAQUFBwMB",
                "MAwGA1UdEwEB/wQCMAAwGgYDVR0RBBMwEYIPd3d3LmV4YW1wbGUuY29tMAoGCCqG",
                "SM49BAMCA0kAMEYCIQC81N1lTIzfSsR6K8W2C3NKaR+iqyjYGo+L2mskYVQAVQIh",
                "APeXowIRcyk1ABfptJZ1DPRcAHpJ8H3antwzwh0okJ/e",
                "-----END CERTIFICATE-----"
              ],
              "key": [
                "-----BEGIN RSA PRIVATE KEY-----",
                "MIGHAgEAMBMGByqGSM49AgEGCCqGSM49AwEHBG0wawIBAQQgaqqaEdlBoohy3xLT",
                "yjdJowGv8zU7NckAO8+fK1x2GqChRANCAASlFj0agKgqgrFunTEf05CIeYGGiBbu",
                "cJGHtO0a9PB/J5/oNKpSXbpCXcvFMCo2wrziDoQ47mFeSA09hGE6dhGI",
                "-----END RSA PRIVATE KEY-----"
              ]
            }
          ]
        }
      }
    }
  ],
  "outbounds": [
    {
      "protocol": "freedom"
    }
  ]
}

// iptables -t nat -A PREROUTING -i eth0 -p udp --dport 20000:50000 -j REDIRECT --to-ports 1081

TODO

• Replace quic-go/quic-go with apernet/quic-go
• Apply congestion to quic transport
• Add custom masquerade

[Losalado]

Hy2 adds Realms service now，will V2Ray support it？

https://github.com/apernet/hysteria/releases/tag/app%2Fv2.9.0

v2.9.0

• Added Hysteria Realms: No public IP? No problem. Punches through your NAT to let you host a Hysteria server from home, a cellular network, or even a coffee shop. Clients connect directly, peer-to-peer. No port forwarding, no relay.

• 新增 Hysteria Realms：没有公网 IP 也没问题！通过 NAT 打洞，让你从家宽、手机流量甚至咖啡店都能运行 Hysteria 服务端。与客户端 P2P 连接，无需配置端口转发或中转。

[LjhAUMEM]

Hy2 adds Realms service now，will V2Ray support it？

sure, need few days