Check for active web pages with open-uri

ruby-talk
1

I'm using openuri module to open web pages. If the pages doesn't exist I
get an error:
in `initialize': getaddrinfo: no address associated with hostname.
(SocketError)

then I get a whole bunch of other stuff. Is there a parameter to use so
that open() returns a true or false value if the page exists or not?
Basically I'm looking through a list of web addresses and I want to
store the active pages and throw away the non active pages. So if the
page doesn't exist I want to be able to move on in the script.

···

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2

Chuck Dawit wrote:

I'm using openuri module to open web pages. If the pages doesn't exist I
get an error:
in `initialize': getaddrinfo: no address associated with hostname.
(SocketError)

then I get a whole bunch of other stuff. Is there a parameter to use so
that open() returns a true or false value if the page exists or not?
Basically I'm looking through a list of web addresses and I want to
store the active pages and throw away the non active pages. So if the
page doesn't exist I want to be able to move on in the script.

Why not use rescue to catch the SocketError?

···

--
Posted via http://www.ruby-forum.com/\.

3

Tim Hunter wrote:

Chuck Dawit wrote:

I'm using openuri module to open web pages. If the pages doesn't exist I
get an error:
in `initialize': getaddrinfo: no address associated with hostname.
(SocketError)

then I get a whole bunch of other stuff. Is there a parameter to use so
that open() returns a true or false value if the page exists or not?
Basically I'm looking through a list of web addresses and I want to
store the active pages and throw away the non active pages. So if the
page doesn't exist I want to be able to move on in the script.

Why not use rescue to catch the SocketError?

If I use rescue will the script return back to normal flow without
exiting? I don't want the script to exit.

···

--
Posted via http://www.ruby-forum.com/\.

4

Chuck Dawit wrote:

Tim Hunter wrote:

Chuck Dawit wrote:

I'm using openuri module to open web pages. If the pages doesn't exist I
get an error:
in `initialize': getaddrinfo: no address associated with hostname.
(SocketError)

then I get a whole bunch of other stuff. Is there a parameter to use so
that open() returns a true or false value if the page exists or not?
Basically I'm looking through a list of web addresses and I want to
store the active pages and throw away the non active pages. So if the
page doesn't exist I want to be able to move on in the script.

Why not use rescue to catch the SocketError?

If I use rescue will the script return back to normal flow without exiting? I don't want the script to exit.

If that's what you want it to do. The idea is that your rescue block gets control when a SocketError occurs. What happens after that is up to you.

···

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