[GitHub] [trafficserver] masaori335 opened a new issue #7241: Pre-warm TLS Tunnel

[GitBox]

masaori335 opened a new issue #7241:
URL: https://github.com/apache/trafficserver/issues/7241


   # Abstraction
   On TLS Forward Tunnel or TLS Partial Blind Tunnel, clients always have to 
wait while ATS establishes connections with origin servers. An idea to fix this 
issue is "pre-warm" connections between ATS and origin servers before clients 
make requests to ATS.
   
   The overview is below.
   <img width="740" alt="95164780-98f48900-07e5-11eb-9393-c35a6de7e9ae" 
src="https://user-images.githubusercontent.com/741391/95164919-ecff6d80-07e5-11eb-8eb9-ac6a3266811f.png";>
   
   
   Using the pre-warmed connection, clients can establish TLS Forward Tunnel or 
TLS Partial Blind Tunnel immediately. We can expect this improves time to first 
byte drastically.
   
   # Status/Plan
   We're testing this concept, and we found some related features are required. 
The development branch becomes bigger than expected includes these features, so 
I'll break it down into PRs per feature. All PRs will be linked to this issue.
   
   # Features
   - [ ] ALPN Support on TLS Partial Blind Tunnel
   - [ ] Log negotiated ALPN
   - [ ] Outbound ProxyProtocol v1/v2
   - [ ] Cleanup stats
   - [ ] Pre-warming TLS Tunnel


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