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Mock Varnish Backend Request
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| # Consider filtering the varnishlog output | |
| # https://feryn.eu/blog/varnishlog-measure-varnish-cache-performance/ | |
| varnishlog -i "RespHeader,Req*" -X "RespHeader:(x|X)-" -I "timestamp:Resp" -x reqprotocol,reqacct -g request | |
| # Capture the log output from varnishlog and look for BereqHeader | |
| # -n name is how you can specify a specific named instance of varnish | |
| # remove -n if you just want to access the default instance | |
| varnishlog -n stage | |
| # Use those values in building a curl request | |
| # * << BeReq >> 3 | |
| # - Begin bereq 2 fetch | |
| # - Timestamp Start: 1482951822.860979 0.000000 0.000000 | |
| # - BereqMethod GET | |
| # - BereqURL /the-url-path-i-requested | |
| # - BereqProtocol HTTP/1.1 | |
| # - BereqHeader X-Real-IP: 127.0.0.1 | |
| # - BereqHeader X-Forwarded-Port: 80 | |
| # - BereqHeader X-Forwarded-Proto: http | |
| # - BereqHeader Host: example.com | |
| # - BereqHeader Pragma: no-cache | |
| # - BereqHeader Upgrade-Insecure-Requests: 1 | |
| # - BereqHeader User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.95 Safari/537.36 | |
| # - BereqHeader Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8 | |
| # - BereqHeader Referer: http://example.com/the-url-path-i-requested | |
| # - BereqHeader Accept-Language: en-US,en;q=0.8 | |
| # - BereqHeader Cookie: PHPSESSID | |
| # - BereqHeader X-Forwarded-For: 127.0.0.1, 127.0.0.1 | |
| # - BereqHeader Accept-Encoding: gzip | |
| # - BereqHeader X-Varnish: 3 | |
| # - VCL_call BACKEND_FETCH | |
| # - VCL_return fetch | |
| # - BackendOpen 23 boot.default 127.0.0.1 8081 127.0.0.1 46958 | |
| # - BackendStart 127.0.0.1 8081 | |
| # - Timestamp Bereq: 1482951822.861428 0.000449 0.000449 | |
| # - FetchError http read error: overflow | |
| # - BackendClose 23 boot.default | |
| # - Timestamp Beresp: 1482951824.284536 1.423558 1.423108 | |
| # - Timestamp Error: 1482951824.284547 1.423568 0.000010 | |
| # - BerespProtocol HTTP/1.1 | |
| # - BerespStatus 503 | |
| # - BerespReason Service Unavailable | |
| # - BerespReason Backend fetch failed | |
| # - BerespHeader Date: Wed, 28 Dec 2016 19:03:44 GMT | |
| # - BerespHeader Server: Varnish | |
| # - VCL_call BACKEND_ERROR | |
| # - BerespHeader Content-Type: text/html; charset=utf-8 | |
| # - BerespHeader Retry-After: 5 | |
| # - VCL_return deliver | |
| # - Storage malloc Transient | |
| # - ObjProtocol HTTP/1.1 | |
| # - ObjStatus 503 | |
| # - ObjReason Backend fetch failed | |
| # - ObjHeader Date: Wed, 28 Dec 2016 19:03:44 GMT | |
| # - ObjHeader Server: Varnish | |
| # - ObjHeader Content-Type: text/html; charset=utf-8 | |
| # - ObjHeader Retry-After: 5 | |
| # - Length 278 | |
| # - BereqAcct 910 0 910 32767 0 32767 | |
| # - End | |
| # Construct a curl command to simulate the backend request from Varnish | |
| # Check for esi includes in backend response | |
| # This is nice for checking the ESI include URL and testing it if it's missing. | |
| # If the ESI include fails due to a 500 error from the backend it may just | |
| # not have content where you expect it, like the nav section of the page is missing. | |
| curl -s \ | |
| -H "X-Real-IP: 127.0.0.1" \ | |
| -H "X-Forwarded-Port: 443" \ | |
| -H "X-Forwarded-Proto: https" \ | |
| -H "Host: example.com" \ | |
| -H "Pragma: no-cache" \ | |
| -H "Upgrade-Insecure-Requests: 1" \ | |
| -H "User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.95 Safari/537.36" \ | |
| -H "Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8" \ | |
| -H "Referer: http://example.com/the-url-path-i-requested" \ | |
| -H "Accept-Language: en-US,en;q=0.8" \ | |
| -H "Cookie: PHPSESSID" \ | |
| -H "X-Forwarded-For: 127.0.0.1, 127.0.0.1" \ | |
| -H "X-Varnish: 3" \ | |
| http://127.0.0.1:8081/ \ | |
| | grep "esi:include" | |
| # Gets the headers only | |
| # nice for evaluating X-Magento-Tags values that get passed to Varnish | |
| curl -I \ | |
| -H "X-Real-IP: 127.0.0.1" \ | |
| -H "X-Forwarded-Port: 80" \ | |
| -H "X-Forwarded-Proto: http" \ | |
| -H "Host: example.com" \ | |
| -H "Pragma: no-cache" \ | |
| -H "Upgrade-Insecure-Requests: 1" \ | |
| -H "User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.95 Safari/537.36" \ | |
| -H "Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8" \ | |
| -H "Referer: http://example.com/the-url-path-i-requested" \ | |
| -H "Accept-Language: en-US,en;q=0.8" \ | |
| -H "Cookie: PHPSESSID" \ | |
| -H "X-Forwarded-For: 127.0.0.1, 127.0.0.1" \ | |
| -H "Accept-Encoding: gzip" \ | |
| -H "X-Varnish: 3" \ | |
| http://127.0.0.1:8081/the-url-path-i-requested | |
| # To get the size of the headers and body of the response | |
| # Good to determine the header size in the event max_http_header_size needs to be increased | |
| # Example: A category page containing thousands of products ends up causing X-Magento-Tags to get ridiculously long. | |
| curl -s -w \%{size_header}:\%{size_download} -o /dev/null \ | |
| -H "X-Real-IP: 127.0.0.1" \ | |
| -H "X-Forwarded-Port: 80" \ | |
| -H "X-Forwarded-Proto: http" \ | |
| -H "Host: example.com" \ | |
| -H "Pragma: no-cache" \ | |
| -H "Upgrade-Insecure-Requests: 1" \ | |
| -H "User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.95 Safari/537.36" \ | |
| -H "Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8" \ | |
| -H "Referer: http://example.com/the-url-path-i-requested" \ | |
| -H "Accept-Language: en-US,en;q=0.8" \ | |
| -H "Cookie: PHPSESSID" \ | |
| -H "X-Forwarded-For: 127.0.0.1, 127.0.0.1" \ | |
| -H "Accept-Encoding: gzip" \ | |
| -H "X-Varnish: 3" \ | |
| http://127.0.0.1:8081/the-url-path-i-requested | |
| # Gets the request contents and all verbose details (just remember to remove the "Accept-Encoding: gzip" header. | |
| curl -v \ | |
| -H "X-Real-IP: 127.0.0.1" \ | |
| -H "X-Forwarded-Port: 80" \ | |
| -H "X-Forwarded-Proto: http" \ | |
| -H "Host: example.com" \ | |
| -H "Pragma: no-cache" \ | |
| -H "Upgrade-Insecure-Requests: 1" \ | |
| -H "User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.95 Safari/537.36" \ | |
| -H "Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8" \ | |
| -H "Referer: http://example.com/the-url-path-i-requested" \ | |
| -H "Accept-Language: en-US,en;q=0.8" \ | |
| -H "Cookie: PHPSESSID" \ | |
| -H "X-Forwarded-For: 127.0.0.1, 127.0.0.1" \ | |
| -H "X-Varnish: 3" \ | |
| http://127.0.0.1:8081/the-url-path-i-requested |
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