Geturl with net/http package

ruby-talk
1

Hello,

I want to retrieve an image from the world wind server using the Ruby http
package. But I can't get it work. In tcl/tk it works like this:

package require http
set url "http://data.worldwind.arc.nasa.gov/t?T=105&L=0&X=81&Y=48"
set token [::http:geturl $url]
upvar #0 $token state

and the jpeg image is in the state(body) variable. Using Ruby I expected
something like this:

require 'net/http'
server = 'http://data.worldwind.arc.nasa.gov'
request = '/t?T=105&L=0&X=81&Y=48'
http = Net::HTTP.new(server)
http.start
resp,data = http.get(request, nil)
http.finish

But http.start returns "SocketError: getaddrinfo: no address associated with
hostname." always. Is there a command like geturl in the net/http package?

···

--
Rasmus

2

You behind a proxy? There is another method in http which takes proxy
host / port as an argument.

···

On 8/17/05, Rasmus Debitsch <Debitsch@t-online.de> wrote:

Hello,

I want to retrieve an image from the world wind server using the Ruby http
package. But I can't get it work. In tcl/tk it works like this:

package require http
set url "http://data.worldwind.arc.nasa.gov/t?T=105&L=0&X=81&Y=48&quot;
set token [::http:geturl $url]
upvar #0 $token state

and the jpeg image is in the state(body) variable. Using Ruby I expected
something like this:

require 'net/http'
server = 'http://data.worldwind.arc.nasa.gov'
request = '/t?T=105&L=0&X=81&Y=48'
http = Net::HTTP.new(server)
http.start
resp,data = http.get(request, nil)
http.finish

But http.start returns "SocketError: getaddrinfo: no address associated with
hostname." always. Is there a command like geturl in the net/http package?
--
Rasmus

--
Brock Weaver
http://www.circaware.com

3

Remove the 'http://' from the 'server' variable.

···

On 8/17/05, Rasmus Debitsch <Debitsch@t-online.de> wrote:

Hello,

I want to retrieve an image from the world wind server using the Ruby http
package. But I can't get it work. In tcl/tk it works like this:

package require http
set url "http://data.worldwind.arc.nasa.gov/t?T=105&L=0&X=81&Y=48&quot;
set token [::http:geturl $url]
upvar #0 $token state

and the jpeg image is in the state(body) variable. Using Ruby I expected
something like this:

require 'net/http'
server = 'http://data.worldwind.arc.nasa.gov'
request = '/t?T=105&L=0&X=81&Y=48'
http = Net::HTTP.new(server)
http.start
resp,data = http.get(request, nil)
http.finish

But http.start returns "SocketError: getaddrinfo: no address associated with
hostname." always. Is there a command like geturl in the net/http package?
--
Rasmus

--
Mohit Muthanna [mohit (at) muthanna (uhuh) com]
"There are 10 types of people. Those who understand binary, and those
who don't."

4

Mohit Muthanna wrote:

Remove the 'http://' from the 'server' variable.

It would take a minimal amount of code to make it work with or without
the "http://" prefix. Any chance this could be patched?

I also recommend accessors for @address and @port.

Regards,

Dan

5

Now it works. Sometimes it is so easy.
Thanks,
Rasmus

"Mohit Muthanna" <mohit.muthanna@gmail.com> schrieb im Newsbeitrag
news:fdb3980a05081713547af1fd61@mail.gmail.com...
Remove the 'http://' from the 'server' variable.

···

On 8/17/05, Rasmus Debitsch <Debitsch@t-online.de> wrote:

Hello,

I want to retrieve an image from the world wind server using the Ruby http
package. But I can't get it work. In tcl/tk it works like this:

package require http
set url "http://data.worldwind.arc.nasa.gov/t?T=105&L=0&X=81&Y=48&quot;
set token [::http:geturl $url]
upvar #0 $token state

and the jpeg image is in the state(body) variable. Using Ruby I expected
something like this:

require 'net/http'
server = 'http://data.worldwind.arc.nasa.gov'
request = '/t?T=105&L=0&X=81&Y=48'
http = Net::HTTP.new(server)
http.start
resp,data = http.get(request, nil)
http.finish

But http.start returns "SocketError: getaddrinfo: no address associated
with
hostname." always. Is there a command like geturl in the net/http package?
--
Rasmus

--
Mohit Muthanna [mohit (at) muthanna (uhuh) com]
"There are 10 types of people. Those who understand binary, and those
who don't."

6

I'd say the server method shouldn't accept url specs
(http://servername is not a server name, it is a url). There could be
a url or address method which accepts a url (i.e.
protocol://server:port/request), but the methods server, port, and
request should accept just that.

···

On 8/17/05, Daniel Berger <djberg96@gmail.com> wrote:

Mohit Muthanna wrote:
> Remove the 'http://' from the 'server' variable.

It would take a minimal amount of code to make it work with or without
the "http://" prefix. Any chance this could be patched?

I also recommend accessors for @address and @port.

Regards,

Dan

--
Brock Weaver
http://www.circaware.com

7

Daniel Berger wrote:

Mohit Muthanna wrote:

Remove the 'http://' from the 'server' variable.

It would take a minimal amount of code to make it work with or without
the "http://" prefix. Any chance this could be patched?

I also recommend accessors for @address and @port.

You should be using the URI class to parse and assemble URLs; there's no need to duplicate that functionality in net/http. URI provides address and port accessors. Also, if you want an easy wrapper around net/http and uri, there's already open-uri.

(Also, I've contributed some improved documentation for net/http which will hopefully make it to ruby-doc.org soon.)

mathew

···

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