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[GH-ISSUE #5102] UDP Proxy Protocol不起作用 #4004
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Reference: github-starred/frp#4004
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Originally created by @mclk623 on GitHub (Dec 22, 2025).
Original GitHub issue: https://github.com/fatedier/frp/issues/5102
Bug Description
我使用Geyser
https://github.com/GeyserMC/Geyser
且在配置文件和frp都开启Proxy Protocol
经过测试最新版frp 无法连接
而使用一些第三方FRP提供商的魔改客户端可以连接（如SAKURA FRP 服务端仍然使用本项目的最新版）
我确认配置文件没有问题
这是Geyser对Proxy Protocol的解析实现
https://github.com/GeyserMC/Geyser/blob/master/core/src/main/java/org/geysermc/geyser/network/netty/proxy/ProxyProtocolDecoder.java
frpc Version
v0.65.0
frps Version
v0.65.0
System Architecture
linux/amd64
Configurations
serverAddr = "xxxx"
serverPort = 8055
auth.method="token"
auth.token = "xxxx"
proxies
name = "MCBE"
type = "udp"
localIP = "127.0.0.1"
localPort = 19132
remotePort = 32603
transport.proxyProtocolVersion = "v2"
Logs
No response
Steps to reproduce
...
Affected area
@mclk623 commented on GitHub (Dec 27, 2025):
似乎是因为Geyser只接受首包Proxy Protocol头 而FRP是每包都有Proxy Protocol头