shadowsocks
UDP fallback doesn't work with gfwlist or custom rules
Please read contributing guidelines. Thanks.
Describe the bug When browsing instagram or youtube with bypass-lan-china route, I can see quic/udp traffic for http3 in tcpdump from my server. But there is only tcp traffic when choosing gfwlist or custom rules and udp fallback.
To Reproduce Steps to reproduce: (Testing with or without plugin is the same for this bug)
- Enable udp-fallback with gfwlist route or custom rules (can confirm the related domains are in the route rules).
- Using the following command to observe udp traffic in your udp fallback server.
tcpdump port 31555 and udp
- Browsing youtube in a chrome browser. Can view youtube normally.
- See no udp traffic from step 2. Switching to bypass-lan-china route, I can observe udp traffic.
Expected behavior When using custom rules, I can view youtube via http3/quic/udp.
Screenshots See above. I can add more if requested.
Smartphone (please complete the following information):
- Android/Chrome OS version: MIUI 13.0.1 / Android 12
- Device: Redmi 10X 4G
- Version: V5.3.3
- Last version that did not exhibit the issue: [not applicable]
Configuration
Put an x inside the [ ] that applies.
- [x] IPv4 server address
- [ ] IPv6 server address
- [x] Client IPv4 availability
- [ ] Client IPv6 availability
- Encrypt method: AES-GCM-256
- Route
- [ ] All
- [ ] Bypass LAN
- [ ] Bypass China
- [ ] Bypass LAN & China
- [x] GFW List
- [ ] China List
- [ ] Custom rules
- [ ] IPv6 route
- [ ] Apps VPN mode
- [ ] Bypass mode
- Remote DNS: dns.google
- [ ] DNS over UDP
- Plugin configuration (if applicable): v2ray-plugin+websocket
- [ ] Auto Connect
- [ ] TCP Fast Open
- If you're not using VPN mode, please supply more details here:
Additional context Add any other context about the problem here.
Hi, @Mygod . Can you reproduce this issue? Do you have any clues? I can reproduce this issue with the lastest commit.
