# frp v0.71.0

- Product: frp (https://whatsnew.fyi/product/frp)
- Vendor: fatedier
- Date: 2026-08-14
- Version: v0.71.0
- Original notes: https://github.com/fatedier/frp/releases/tag/v0.71.0
- Permalink: https://whatsnew.fyi/product/frp/releases/v0.71.0

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- **added** — UDP packet payloads for ordinary UDP proxies and SUDP now use a dedicated binary codec when frpc and frps successfully negotiate the capability under wire protocol v2, using a more compact wire representation
- **fixed** — Fixed a server panic and remote denial of service caused by a client sending a negative pool_count by rejecting negative values before work-connection pool resources are allocated
- **fixed** — Fixed frpc verify ignoring configured featureGates, which caused VirtualNet configurations to be rejected even when the feature was enabled
- **fixed** — Fixed a case-insensitive validation bypass that allowed customDomains under the configured subDomainHost to be registered using mixed-case domain names

##### Features

* UDP packet payloads for ordinary UDP proxies and SUDP now use a dedicated binary codec when frpc and frps successfully negotiate the capability under wire protocol v2, using a more compact wire representation. Wire protocol v1 remains JSON; wire protocol v2 falls back to JSON `UDPPacket` when the peer does not support or did not negotiate the capability.

##### Fixes

* Fixed a server panic and remote denial of service caused by a client sending a negative `pool_count`. Negative values are now rejected before work-connection pool resources are allocated.
* Fixed `frpc verify` ignoring configured `featureGates`, which caused VirtualNet configurations to be rejected even when the feature was enabled.
* Fixed a case-insensitive validation bypass that allowed `customDomains` under the configured `subDomainHost` to be registered using mixed-case domain names.