sing-box/docs/configuration/outbound/hysteria.md

Structure

{
  "outbounds": [
    {
      "type": "hysteria",
      "tag": "hysteria-out",
      
      "server": "127.0.0.1",
      "server_port": 1080,

      "up": "100 Mbps",
      "up_mbps": 100,
      "down": "100 Mbps",
      "down_mbps": 100,
      "obfs": "fuck me till the daylight",
      "auth": "",
      "auth_str": "password",
      "recv_window_conn": 0,
      "recv_window": 0,
      "disable_mtu_discovery": false,
      "network": "tcp",
      "tls": {},
      
      "detour": "upstream-out",
      "bind_interface": "en0",
      "bind_address": "0.0.0.0",
      "routing_mark": 1234,
      "reuse_addr": false,
      "connect_timeout": "5s",
      "domain_strategy": "prefer_ipv6",
      "fallback_delay": "300ms"
    }
  ]
}

!!! warning ""

QUIC, which is required by hysteria is not included by default, see [Installation](/#installation).

Hysteria Fields

server

==Required==

The server address.

server_port

==Required==

The server port.

up, down

==Required==

Format: [Integer] [Unit] e.g. 100 Mbps, 640 KBps, 2 Gbps

Supported units (case sensitive, b = bits, B = bytes, 8b=1B):

bps (bits per second)
Bps (bytes per second)
Kbps (kilobits per second)
KBps (kilobytes per second)
Mbps (megabits per second)
MBps (megabytes per second)
Gbps (gigabits per second)
GBps (gigabytes per second)
Tbps (terabits per second)
TBps (terabytes per second)

up_mbps, down_mbps

==Required==

up, down in Mbps.

obfs

Obfuscated password.

auth

Authentication password, in base64.

auth_str

Authentication password.

recv_window_conn

The QUIC stream-level flow control window for receiving data.

15728640 (15 MB/s) will be used if empty.

recv_window

The QUIC connection-level flow control window for receiving data.

67108864 (64 MB/s) will be used if empty.

disable_mtu_discovery

Disables Path MTU Discovery (RFC 8899). Packets will then be at most 1252 (IPv4) / 1232 (IPv6) bytes in size.

Force enabled on for systems other than Linux and Windows (according to upstream).

tls

==Required==

TLS configuration, see TLS.

network

Enabled network

One of tcp udp.

Both is enabled by default.

Dial Fields

detour

The tag of the upstream outbound.

Other dial fields will be ignored when enabled.

bind_interface

The network interface to bind to.

bind_address

The address to bind to.

routing_mark

!!! error ""

Only supported on Linux.

Set netfilter routing mark.

reuse_addr

Reuse listener address.

connect_timeout

Connect timeout, in golang's Duration format.

A duration string is a possibly signed sequence of decimal numbers, each with optional fraction and a unit suffix, such as "300ms", "-1.5h" or "2h45m". Valid time units are "ns", "us" (or "µs"), "ms", "s", "m", "h".

domain_strategy

One of prefer_ipv4 prefer_ipv6 ipv4_only ipv6_only.

If set, the server domain name will be resolved to IP before connecting.

dns.strategy will be used if empty.

fallback_delay

The length of time to wait before spawning a RFC 6555 Fast Fallback connection. That is, is the amount of time to wait for IPv6 to succeed before assuming that IPv6 is misconfigured and falling back to IPv4 if prefer_ipv4 is set. If zero, a default delay of 300ms is used.

Only take effect when domain_strategy is prefer_ipv4 or prefer_ipv6.