世界
68 lines
2.2 KiB
Markdown
68 lines
2.2 KiB
Markdown
---
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icon: material/new-box
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---
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!!! quote "Changes in sing-box 1.14.0"
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:material-plus: [udp_mapping](#udp_mapping)
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:material-plus: [udp_filtering](#udp_filtering)
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:material-plus: [udp_nat_max](#udp_nat_max)
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### Structure
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```json
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{
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"udp_timeout": "5m",
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"udp_mapping": "endpoint_independent",
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"udp_filtering": "endpoint_independent",
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"udp_nat_max": 0
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}
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```
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### Fields
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#### udp_timeout
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UDP NAT expiration time.
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`5m` will be used by default.
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#### udp_mapping
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!!! question "Since sing-box 1.14.0"
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UDP NAT mapping behavior.
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| Value | Behavior |
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|------------------------------|-------------------------------------------------------------------------------|
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| `endpoint_independent` | Reuse the same mapping for the same source address and port for all destinations. |
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| `address_dependent` | Use a separate mapping for each destination address. |
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| `address_and_port_dependent` | Use a separate mapping for each destination address and port. |
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`endpoint_independent` is used by default.
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#### udp_filtering
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!!! question "Since sing-box 1.14.0"
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UDP NAT filtering behavior.
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| Value | Behavior |
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|------------------------------|-----------------------------------------------------------------------------|
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| `endpoint_independent` | Accept packets from any remote endpoint. |
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| `address_dependent` | Accept packets only from remote addresses to which packets have been sent. |
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| `address_and_port_dependent` | Accept packets only from remote addresses and ports to which packets have been sent. |
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`endpoint_independent` is used by default.
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#### udp_nat_max
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!!! question "Since sing-box 1.14.0"
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Maximum number of UDP NAT sessions.
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When the limit is reached, the least recently used session is closed.
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When unset or set to `0`, `4096` is used on iOS. On other platforms, a value from `4096` to `16384` is selected based on total memory;
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`16384` is used if total memory cannot be detected.
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