Custom Log Field 1

This feature determines the format and the content that will be assigned to the custom log field in a raw log file. The main purpose behind this custom field is to allow you to determine which request and response header values will be stored in your log files.

Note: By default, the custom log field is called "x-ec_custom-1." However, the name of this field can be customized from the Raw Log Settings page.

The formatting that you should use to specify request and response headers is defined below.

Header Type	Format	Examples
Request Header	%{RequestHeaderReplace this term with the name of the desired request header.}iThis letter identifies that the header being specified provides information that is inbound to our CDN.	%{Accept-Encoding}i %{Referer}i %{Authorization}i
Response Header	%{ResponseHeaderReplace this term with the name of the desired response header.}oThis letter identifies that the header being specified provides information that is outbound from our CDN.	%{Age}o %{Content-Type}o %{Cookie}o

Key information:

• A custom log field can contain any combination of header fields and plain text.
• Valid characters for this field include the following: alphanumeric (i.e., 0-9, a-z, and A-Z), dashes, colons, semi-colons, apostrophes, commas, periods, underscores, equal signs, parentheses, brackets, and spaces. The percentage symbol and curly braces are only allowed when used to specify a header field.
• A specified header field must match its defined name. You cannot use an alternate spelling or case.
• If you would like to specify multiple headers, then it is recommended that you use a separator to indicate each header. For example, you could use an abbreviation for each header. Sample syntax is provided below.
  AE: %{Accept-Encoding}i A: %{Authorization}i CT: %{Content-Type}o

Default Value: -