Thread: [cpp-netlib-devel] Is there a simple http URI example somewhere?

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I didn't see one in the hello_world_server example... am I looking in
the wrong place?

Erik

Hi Erik,

On 4 February 2010 21:13, Nelson, Erik - 2
<eri...@ba...>wrote:

> I didn't see one in the hello_world_server example... am I looking in
> the wrong place?
>
>
You're not, there isn't an HTTP URI example.
Glyn

Hi,

On Thu, Feb 4, 2010 at 21:21, Glyn Matthews <gly...@gm...> wrote:
> Hi Erik,
>
> On 4 February 2010 21:13, Nelson, Erik - 2 <eri...@ba...>
> wrote:
>>
>> I didn't see one in the hello_world_server example... am I looking in
>> the wrong place?
>>
>
> You're not, there isn't an HTTP URI example.
> Glyn
>

There's this, http://github.com/mikhailberis/cpp-netlib/blob/0.5/libs/network/example/uri.cpp
which uses http::uri, but it isn't much. The URI tests might offer
some insight too, those can be found at
http://github.com/mikhailberis/cpp-netlib/blob/0.5/libs/network/test/url_test.cpp.

Jeroen

On Thursday, February 04, 2010 3:33 PM Jeroen Habraken
[mailto:vex...@gm...] wrote:

>There's this,
http://github.com/mikhailberis/cpp-netlib/blob/0.5/libs/network/example/
uri.cpp
>which uses http::uri, but it isn't much. The URI tests might offer some
insight too,
>those can be found at
http://github.com/mikhailberis/cpp-netlib/blob/0.5/libs/network/test/url
_test.cpp.

Thanks, that's helpful

Erik

On Thursday, February 04, 2010 3:33 PM Jeroen Habraken
[mailto:vex...@gm...] wrote:

>There's this,
http://github.com/mikhailberis/cpp-netlib/blob/0.5/libs/network/example/
uri.cpp
>which uses http::uri, but it isn't much. The URI tests might offer some
insight too,
>those can be found at
http://github.com/mikhailberis/cpp-netlib/blob/0.5/libs/network/test/url
_test.cpp.

Okay, I'm playing around with it a little bit... If I use a
URL like http://localhost:8000/test?arg=5 against the hello_world_server
example, and in the handler do something like

boost::network::uri::http::uri http_uri(request.uri)

the request.uri is something like "/test?arg=5" and http_uri.valid() is
false... Is this expected?  I would have guessed that request.uri would
parse okay.  Is there some support for pulling apart the query string
(separating the path from the arguments)?

Thanks

Erik

Hi,

On Thu, Feb 4, 2010 at 22:11, Nelson, Erik - 2
<eri...@ba...> wrote:
>
> On Thursday, February 04, 2010 3:33 PM Jeroen Habraken
> [mailto:vex...@gm...] wrote:
>
>>There's this,
> http://github.com/mikhailberis/cpp-netlib/blob/0.5/libs/network/example/
> uri.cpp
>>which uses http::uri, but it isn't much. The URI tests might offer some
> insight too,
>>those can be found at
> http://github.com/mikhailberis/cpp-netlib/blob/0.5/libs/network/test/url
> _test.cpp.
>
>
> Okay, I'm playing around with it a little bit... If I use a
> URL like http://localhost:8000/test?arg=5 against the hello_world_server
> example, and in the handler do something like
>
> boost::network::uri::http::uri http_uri(request.uri)
>
> the request.uri is something like "/test?arg=5" and http_uri.valid() is
> false... Is this expected?  I would have guessed that request.uri would
> parse okay.  Is there some support for pulling apart the query string
> (separating the path from the arguments)?
>
> Thanks
>
> Erik
>

I can't reproduce this behaviour with the http::uri parser in netlib
0.5, so I'm uncertain where this goes wrong. I've added the test as a
trivial example of how to use http::uri.

Jeroen

Jeroen Habraken wrote:
>I can't reproduce this behaviour with the http::uri parser in netlib
0.5,
>so I'm uncertain where this goes wrong. I've added the test as a
trivial
>example of how to use http::uri.

Thanks, but a better test might be something like

string test = "/test?arg=5";

since that's what request.uri produces in this case

Erik

On Thu, Feb 4, 2010 at 23:05, Nelson, Erik - 2
<eri...@ba...> wrote:
> Jeroen Habraken wrote:
>>I can't reproduce this behaviour with the http::uri parser in netlib
> 0.5,
>>so I'm uncertain where this goes wrong. I've added the test as a
> trivial
>>example of how to use http::uri.
>
> Thanks, but a better test might be something like
>
> string test = "/test?arg=5";
>
> since that's what request.uri produces in this case
>
> Erik
>

Ah, in that case it makes sense, "/test?arg=5" is a relative URI, not
an absolute one, and something we decided not to support in the URI
parser.

Jeroen

Jeroen Habraken wrote:

>Ah, in that case it makes sense, "/test?arg=5" is a relative URI, not
an
> absolute one, and something we decided not to support in the URI
parser.

That's fair enough, though it does seem a little counter-intuitive that
the value in request.uri can't be parsed.  Is there support in
cpp-netlib for digging out the arguments, or will I need to write my own
parser to grab things like 'arg=5'?

Erik

On Thu, Feb 4, 2010 at 23:18, Nelson, Erik - 2
<eri...@ba...> wrote:
> Jeroen Habraken wrote:
>
>>Ah, in that case it makes sense, "/test?arg=5" is a relative URI, not
> an
>> absolute one, and something we decided not to support in the URI
> parser.
>
> That's fair enough, though it does seem a little counter-intuitive that
> the value in request.uri can't be parsed.  Is there support in
> cpp-netlib for digging out the arguments, or will I need to write my own
> parser to grab things like 'arg=5'?
>
> Erik
>

You can call query() on a uri and http::uri to grab the query string,
but we currently don't have a parser for them yet. It's on my TODO
list though. You could give writing one yourself based on
http://boost-spirit.com/home/articles/qi-example/parsing-a-list-of-key-value-pairs-using-spirit-qi/
a shot, it shouldn't be too hard.

Jeroen

Jeroen Habraken wrote:

>You can call query() on a uri and http::uri to grab the query string,
but 
>we currently don't have a parser for them yet. It's on my TODO list
though.
>You could give writing one yourself based on 
>http://boost-spirit.com/home/articles/qi-example/parsing-a-list-of-key-
value-pairs-using-spirit-qi/
>a shot, it shouldn't be too hard.

Okay, I'll see if I can put together something that works well enough.

Thanks

Erik