Re: HTTP response header access in curl

From: Daniel Stenberg via curl-users <curl-users_at_lists.haxx.se>
Date: Fri, 18 Mar 2022 00:00:09 +0100 (CET)

On Thu, 17 Mar 2022, Daniel Stenberg via curl-users wrote:

> $ curl -sw '%{header_json}\n' curl.se | jq

As was quickly pointed out to me on IRC, that format will not work for
duplicated headers - and such are still valid and frequently used. I think
header values therefor need to be made JSON arrays and thus rather look like
this:

{"Date":["Tue, 09 Nov 2010 14:49:00 GMT"],
"Server":["test-server/fake"],
"Last-Modified":["Tue, 13 Jun 2000 12:10:00 GMT"],
"ETag":["\"21025-dc7-39462498\""],
"Accept-Ranges":["bytes"],
"Set-Cookie":["firstcookie=want1; path=/","2cookie=want2;
path=/","cookie3=want3; path=/"],
"Content-Length":["6"],
"Connection":["close"]
}

... or when pretty-printed with jq:

{
   "Date": [
     "Tue, 09 Nov 2010 14:49:00 GMT"
   ],
   "Server": [
     "test-server/fake"
   ],
   "Last-Modified": [
     "Tue, 13 Jun 2000 12:10:00 GMT"
   ],
   "ETag": [
     "\"21025-dc7-39462498\""
   ],
   "Accept-Ranges": [
     "bytes"
   ],
   "Set-Cookie": [
     "firstcookie=want; path=/",
     "2cookie=want; path=/",
     "cookie3=want; path=/"
   ],
   "Content-Length": [
     "6"
   ],
   "Connection": [
     "close"
   ]
}

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Received on 2022-03-18