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.TH "TRAFFIC_VIA" "1" "Mar 08, 2019" "7.1" "Apache Traffic Server"
.SH NAME
traffic_via \- Traffic Server Via header decoder
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.SH SYNOPSIS
.sp
\fBtraffic_via\fP [OPTIONS] [VIA ...]
.SH DESCRIPTION
.sp
\fBtraffic_via\fP decodes the Traffic Server Via header codes.
Via header strings are passed as command\-line options. The enclosing
square brackets are optional.
.sp
If the argument is \(aq\-\(aq, \fBtraffic_via\fP will filter standard
input for Via headers. This modes supports only supports Via headers
that are enclosed by square brackets.
.SH OPTIONS
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.TP
.B \-h, \-\-help
Print usage information and exit.
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.TP
.B \-V, \-\-version
Print version.
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.SH EXAMPLES
.sp
Decode the Via header from command\-line arguments:
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.sp
.nf
.ft C
$ traffic_via "[uScMsEf p eC:t cCMi p sF]"
Via header is uScMsEf p eC:t cCMi p sF, 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       :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
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.fi
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.sp
Decode the Via header from a curl request, using the X\-Debug plugin:
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.sp
.nf
.ft C
$ 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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.fi
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.SH COPYRIGHT
2019, dev@trafficserver.apache.org
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