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Here is a not very elegant patch:

- --- curl-7.10.8/lib/http.c 2003-10-31 22:43:22.000000000 +0100
+++ curl-7.10.8.new/lib/http.c 2004-01-10 18:26:44.000000000 +0100
@@ -1420,6 +1420,8 @@
 
           add_bufferf(req_buffer, "%s\r\n", headers->data);
         }
+ } else {
+ add_bufferf(req_buffer, "%s: \r\n", headers->data);
       }
       headers = headers->next;
     }

with the following effect.

curl -H Host: -- deletes the Host: header as yet
curl -H Host -- (without the colon) creates an empty header
curl -H SomeHeader -- creates an empty header

Here an example:

# (src/curl -sv -H klaus:\ otto -H klaus -H Host -H Host: -H Host:\ heinz http://localhost >/dev/null) 2>&1 | cat -n
     1 * About to connect() to localhost:80
     2 * socket error
     3 * Connected to localhost (127.0.0.1) port 80
     4 > GET / HTTP/1.1
     5 User-Agent: curl/7.10.8 (i686-pc-linux-gnu) libcurl/7.10.8 OpenSSL/0.9.6g ipv6 zlib/1.1.4
     6 Pragma: no-cache
     7 Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, */*
     8 klaus: otto
     9 klaus:
    10 Host:
    11 Host: heinz
    12

The "-H klaus:\ otto" creates line 8, "-H klaus" line 9, "-H Host" creates
line 10, "-H Host:" deletes the normal "Host: localhost" header and
"-H Host:\ heinz" creates line 11.

Was that your problem?

Torsten

On Friday 09 January 2004 17:51, Gara Peter wrote:
> It was a unique problem. I had to test an application, which used tricky
> communication with customized header fields. Sometimes it used empty
> header fields, in order that I should have to solve the checking of
> those situations.
>
> Daniel Stenberg <daniel-curl_at_haxx.se> írta:
> > On Thu, 8 Jan 2004, Gara Peter wrote:
> > > Thank you for your answer. I had tried to use extra spaces, but curl
>
> had
>
> > > ignored them. So I downloaded the source code and modified the
>
> relevant part
>
> > > of it to run the desired function. It was successful.
> >
> > Did you come up with a good approach for doing this that might be
>
> worth
>
> > sharing with the rest of us?
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Received on 2004-01-10