commit e9026b39fe509fd833dfadfe210dcc091f26f118
author Piotr Sikora <piotrsikora@google.com> Wed Mar 15 15:55:35 2017 -0700
committer Piotr Sikora <piotrsikora@google.com> Wed Apr 05 12:38:18 2017 +0000
tree 6ba8845a3e40d5ae3a3bacbe65048714d57538bd
parent ced7c6895b1e855656bb06d44302f52c935b09a2

Proxy: split configured header names and values.

Previously, each configured header was represented in one of two ways,
depending on whether or not its value included any variables.

If the value didn't include any variables, then it would be represented
as as a single script that contained complete header line with HTTP/1.1
delimiters, i.e.:

     "Header: value\r\n"

But if the value included any variables, then it would be represented
as a series of three scripts: first contained header name and the ":"
delimiter, second evaluated to header value, and third contained only
"\r\n", i.e.:

     "Header:"
     "$value"
     "\r\n"

This commit changes that, so that each configured header is represented
as a series of two scripts: first contains only header name, and second
contains (or evaluates to) only header value, i.e.:

    "Header"
    "$value"

or

    "Header"
    "value"

This not only makes things more consistent, but also allows header name
and value to be accessed separately.

Change-Id: I946a768a0e75e221385e39aca55b419b14ed6d07
Signed-off-by: Piotr Sikora <piotrsikora@google.com>
Reviewed-on: https://nginx-review.googlesource.com/2832
Reviewed-by: Lizan Zhou <zlizan@google.com>