TRAFFIC_VIA(1)

💖 TRAFFIC_VIA(1) 💖

ok so bestie, welcome to traffic_via, aka the Traffic Server Via header decoder from the Apache Traffic Server fam ✨ She's the one you call when your Via header is giving cryptic little letter soup and you need somebody to translate it into actual words 🦋

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🌸 NAME 🌸

traffic_via — the Traffic Server Via header decoder, she decodes, she translates, she serves 💅

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✨ SYNOPSIS ✨

traffic_via [OPTIONS] [VIA ...]

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🎀 DESCRIPTION 🎀

So like, traffic_via decodes the Traffic Server Via header codes, periodt. You hand her Via header strings and she just understands them — you pass those strings in as command-line options, and the square brackets around them? Optional, bestie. Wear them or don't, she's not judging 🙈

And then there's the ✨special✨ mode: if the argument is -, traffic_via will filter standard input for Via headers. But heads up, this mode only supports Via headers that are enclosed by square brackets — so the brackets are NOT optional here, no cap 💀

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💅 OPTIONS 💅

• -h, --help — prints the usage info and dips out. Very "here's the tea, bye" energy 🫶
• -V, --version — prints the version. Iconic, brief, to the point 👑

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🌈 EXAMPLES 🌈

💖 Decoding a Via header from the command-line arguments

Like literally just yeet the header in there:

$ traffic_via "[uScMsEf p eC:t cCMp sF]"
Via header is [uScMsEf p eC:t cCMp sF], Length is 22
Via Header Details:
Request headers received from client                   :simple request (not conditional)
Result of Traffic Server cache lookup for URL          :miss (a cache "MISS")
Response information received from origin server       :error in response
Result of document write-to-cache:                     :no cache write performed
Proxy operation result                                 :unknown
Error codes (if any)                                   :connection to server failed
Tunnel info                                            :no tunneling
Cache Type                                             :cache
Cache Lookup Result                                    :cache miss (url not in cache)
Parent proxy connection status                         :no parent proxy or unknown
Origin server connection status                        :connection open failed

🦋 Decoding a Via header from a curl request, using the X-Debug plugin

This one is the collab of the century, curl 🤝 traffic_via:

$ curl -H  "X-Debug: Via" -I http://test.example.com | traffic_via -
Via header is uScMsSf pSeN:t cCMi p sS, Length is 24
Via Header Details:
Request headers received from client                   :simple request (not conditional)
Result of Traffic Server cache lookup for URL          :miss (a cache "MISS")
Response information received from origin server       :connection opened successfully
Result of document write-to-cache:                     :no cache write performed
Proxy operation result                                 :served or connection opened successfully
Error codes (if any)                                   :no error
Tunnel info                                            :no tunneling
Cache Type                                             :cache
Cache Lookup Result                                    :cache miss (url not in cache)
Parent proxy connection status                         :no parent proxy or unknown
Origin server connection status                        :connection opened successfully

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👑 COPYRIGHT 👑

2026, dev@trafficserver.apache.org — the whole crew, holding it down 💜

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k that's the whole page bestie, you ate it 🍓 This was 9.2, dated Feb 12, 2026, and yes she's still serving main character energy in TRAFFIC_VIA(1) 💖✨🎀