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How to check a connection
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news7

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Since: Jul 29, 2004
Posts: 22

(Msg. 1) Posted: Mon Jul 12, 2004 9:02 pm Post subject: How to check a connection Archived from groups: alt>www>webmaster (more info?)

Currently my system is set to retrieve XML from a URL (let's say http://gateway.webaddress.com/soap/mms.dll), I did not code the XML section of the page. However, the server that mms.dll is hosted on is sometimes down, and there is another webaddess from which I can access the file. How can a check to see which of the two files I can connect to BEFORE attempting to connect to it? Thanks, -- Chris Michael www.INTOmobiles.com >> Stay informed about: How to check a connection

usenet200407

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Since: Jul 12, 2004
Posts: 88

(Msg. 2) Posted: Mon Jul 12, 2004 9:36 pm Post subject: Re: How to check a connection [Login to view extended thread Info.] Archived from groups: per prev. post (more info?)

Chris Michael wrote: > However, the server that mms.dll is hosted on is sometimes > down, and there is another webaddess from which I can access the file. How > can a check to see which of the two files I can connect to BEFORE attempting > to connect to it? ping? -- Toby A Inkster BSc (Hons) ARCS Contact Me - <a style='text-decoration: underline;' href="http://www.goddamn.co.uk/tobyink/?page=132" target="_blank">http://www.goddamn.co.uk/tobyink/?page=132</a><!-- ~MESSAGE_AFTER~ --> >> Stay informed about: How to check a connection

news7

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Since: Jul 29, 2004
Posts: 22

(Msg. 3) Posted: Mon Jul 12, 2004 10:11 pm Post subject: Re: How to check a connection [Login to view extended thread Info.] Archived from groups: per prev. post (more info?)

"Toby Inkster" <usenet200407.TakeThisOut@tobyinkster.co.uk> wrote in message news:pan.2004.07.12.17.36.03.805789@tobyinkster.co.uk \|\| Chris Michael wrote: \|\| \|\|\| However, the server that mms.dll is hosted on is sometimes \|\|\| down, and there is another webaddess from which I can access the \|\|\| file. How can a check to see which of the two files I can connect \|\|\| to BEFORE attempting to connect to it? \|\| \|\| ping? I've heard of "pinging" but don't know how to do it in a web page. I'll try googling it and see what I come up with. Thanks, -- Chris Michael www.INTOmobiles.com >> Stay informed about: How to check a connection

usewebsiteinsi

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Since: Apr 25, 2004
Posts: 91

(Msg. 4) Posted: Mon Jul 12, 2004 10:55 pm Post subject: Re: How to check a connection [Login to view extended thread Info.] Archived from groups: per prev. post (more info?)

Chris Michael wrote: > "Toby Inkster" <usenet200407.TakeThisOut@tobyinkster.co.uk> wrote in message > news:pan.2004.07.12.17.36.03.805789@tobyinkster.co.uk >>> Chris Michael wrote: >>> >>>> However, the server that mms.dll is hosted on is sometimes >>>> down, and there is another webaddess from which I can access the >>>> file. How can a check to see which of the two files I can connect >>>> to BEFORE attempting to connect to it? >>> >>> ping? > > I've heard of "pinging" but don't know how to do it in a web page. > I'll try googling it and see what I come up with. The ping will tell you that the machine is up but that doesn't necessarily mean that the web server is up and serving. You could try a HEAD request on mms.dll or another file on the server but this (or running a ping) might take more time to execute than actually making a request for mms.dll and using a short timeout. -- Andrew Urquhart - My reply address is invalid, see <a style='text-decoration: underline;' href="http://www.andrewu.co.uk/contact/" target="_blank">www.andrewu.co.uk/contact/</a><!-- ~MESSAGE_AFTER~ --> >> Stay informed about: How to check a connection

spamblocked1

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Since: Sep 19, 2003
Posts: 3499

(Msg. 5) Posted: Mon Jul 12, 2004 11:40 pm Post subject: Re: How to check a connection [Login to view extended thread Info.] Archived from groups: per prev. post (more info?)

Chris Michael wrote: > ... > How can a check to see which of the two files I can > connect to BEFORE attempting to connect to it? Can you not just make the connection and trap the error? You could get real sophisticated and measure the success rate of each server so you have dynamic analysis and can first try the statistically best performing server. -- William Tasso<!-- ~MESSAGE_AFTER~ --> >> Stay informed about: How to check a connection

nospacespamgir2

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Since: Jun 28, 2004
Posts: 240

(Msg. 6) Posted: Tue Jul 13, 2004 2:40 am Post subject: Re: How to check a connection [Login to view extended thread Info.] Archived from groups: per prev. post (more info?)

Andrew Urquhart wrote: > Chris Michael wrote: > >>"Toby Inkster" <usenet200407 RemoveThis @tobyinkster.co.uk> wrote in message >>news:pan.2004.07.12.17.36.03.805789@tobyinkster.co.uk >> >>>>Chris Michael wrote: >>>> >>>> >>>>>However, the server that mms.dll is hosted on is sometimes >>>>>down, and there is another webaddess from which I can access the >>>>>file. How can a check to see which of the two files I can connect >>>>>to BEFORE attempting to connect to it? >>>> >>>>ping? >> >>I've heard of "pinging" but don't know how to do it in a web page. >>I'll try googling it and see what I come up with. > > > The ping will tell you that the machine is up but that doesn't > necessarily mean that the web server is up and serving. You could try a > HEAD request on mms.dll or another file on the server but this (or > running a ping) might take more time to execute than actually making a > request for mms.dll and using a short timeout. Do people really leave ICMP open these days? I thought almost all firewalls didn't reply to pings. -- x theSpaceGirl (miranda) # lead designer @ <a style='text-decoration: underline;' href="http://www.dhnewmedia.com" target="_blank">http://www.dhnewmedia.com</a> # # remove NO SPAM to email, or use form on website #<!-- ~MESSAGE_AFTER~ --> >> Stay informed about: How to check a connection

usewebsiteinsi

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Since: Apr 25, 2004
Posts: 91

(Msg. 7) Posted: Tue Jul 13, 2004 2:45 am Post subject: Re: How to check a connection [Login to view extended thread Info.] Archived from groups: per prev. post (more info?)

SpaceGirl wrote: > Andrew Urquhart wrote: >> Chris Michael wrote: >>> I've heard of "pinging" but don't know how to do it in a web page. >> [snip] >> The ping will tell you that the machine is up but that doesn't >> necessarily mean that the web server is up and serving. [snip] > Do people really leave ICMP open these days? I thought almost all > firewalls didn't reply to pings. Ah, yes, good point! ) -- Andrew Urquhart - FAQ: <a style='text-decoration: underline;' href="http://www.aww-faq.org" target="_blank">www.aww-faq.org</a> - My reply address is invalid, see <a style='text-decoration: underline;' href="http://www.andrewu.co.uk/contact/" target="_blank">www.andrewu.co.uk/contact/</a><!-- ~MESSAGE_AFTER~ --> >> Stay informed about: How to check a connection

news7

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Since: Jul 29, 2004
Posts: 22

(Msg. 8) Posted: Tue Jul 13, 2004 4:04 am Post subject: Re: How to check a connection [Login to view extended thread Info.] Archived from groups: per prev. post (more info?)

"SpaceGirl" <NOspaceSPAMgirl RemoveThis @subhuman.net> wrote in message news:2lgibcFcf15tU1@uni-berlin.de \|\| Andrew Urquhart wrote: \|\| \|\|\| Chris Michael wrote: \|\|\| \|\|\|\| "Toby Inkster" <usenet200407 RemoveThis @tobyinkster.co.uk> wrote in message \|\|\|\| news:pan.2004.07.12.17.36.03.805789@tobyinkster.co.uk \|\|\|\| \|\|\|\|\|\| Chris Michael wrote: \|\|\|\|\|\| \|\|\|\|\|\| \|\|\|\|\|\|\| However, the server that mms.dll is hosted on is sometimes \|\|\|\|\|\|\| down, and there is another webaddess from which I can access the \|\|\|\|\|\|\| file. How can a check to see which of the two files I can \|\|\|\|\|\|\| connect to BEFORE attempting to connect to it? \|\|\|\|\|\| \|\|\|\|\|\| ping? \|\|\|\| \|\|\|\| I've heard of "pinging" but don't know how to do it in a web page. \|\|\|\| I'll try googling it and see what I come up with. \|\|\| \|\|\| \|\|\| The ping will tell you that the machine is up but that doesn't \|\|\| necessarily mean that the web server is up and serving. You could \|\|\| try a HEAD request on mms.dll or another file on the server but \|\|\| this (or running a ping) might take more time to execute than \|\|\| actually making a request for mms.dll and using a short timeout. \|\| \|\| Do people really leave ICMP open these days? I thought almost all \|\| firewalls didn't reply to pings. I can't seem to ping the server at all, even though I know for sure that it's up, I just get a timed out message. I guess the reason behind this is, as SpaceGirl mentioned, the firewall isn't replying to pings, but I'll double check tomorrow. -- Chris Michael www.INTOmobiles.com >> Stay informed about: How to check a connection

news7

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Since: Jul 29, 2004
Posts: 22

(Msg. 9) Posted: Tue Jul 13, 2004 4:05 am Post subject: Re: How to check a connection [Login to view extended thread Info.] Archived from groups: per prev. post (more info?)

"William Tasso" <SpamBlocked.DeleteThis@tbdata.com> wrote in message news:2lg7goFckbfmU1@uni-berlin.de \|\| Chris Michael wrote: \|\|\| ... \|\|\| How can a check to see which of the two files I can \|\|\| connect to BEFORE attempting to connect to it? \|\| \|\| Can you not just make the connection and trap the error? Well, I googled for help with trapping the error but gave up quite quickly after I read in a few different places that it wasn't possible to trap this type of error. The error that I get is "A connection with the server could not be established". -- Chris Michael www.INTOmobiles.com Free ringtones/logos Free mobile alerts 3 months free insurance >> Stay informed about: How to check a connection

spamblocked1

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Since: Sep 19, 2003
Posts: 3499

(Msg. 10) Posted: Tue Jul 13, 2004 10:47 am Post subject: Re: How to check a connection [Login to view extended thread Info.] Archived from groups: per prev. post (more info?)

Chris Michael wrote: > "William Tasso" <SpamBlocked.TakeThisOut@tbdata.com> wrote in message > news:2lg7goFckbfmU1@uni-berlin.de >>> Chris Michael wrote: >>>> ... >>>> How can a check to see which of the two files I can >>>> connect to BEFORE attempting to connect to it? >>> >>> Can you not just make the connection and trap the error? > > Well, I googled for help with trapping the error but gave up quite > quickly after I read in a few different places that it wasn't > possible to trap this type of error. Sorry, I can't see that. An error is an error. There must be a way to trap it even if merely by checking the value of the returned data. > The error that I get is "A connection with the server could not be > established". It's a start. What platform is your code running on? What module/app/system is returning the error? -- William Tasso<!-- ~MESSAGE_AFTER~ --> >> Stay informed about: How to check a connection

shit1

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Since: Jul 09, 2004
Posts: 446

(Msg. 11) Posted: Tue Jul 13, 2004 11:39 am Post subject: Re: How to check a connection [Login to view extended thread Info.] Archived from groups: per prev. post (more info?)

in post: <news:2lgibcFcf15tU1@uni-berlin.de> SpaceGirl <NOspaceSPAMgirl.RemoveThis@subhuman.net> said: > Do people really leave ICMP open these days? I thought almost all > firewalls didn't reply to pings. i'll open my ports for anyone but i'm a slut. -- b r u c i e<!-- ~MESSAGE_AFTER~ --> >> Stay informed about: How to check a connection

nospacespamgir2

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Since: Jun 28, 2004
Posts: 240

(Msg. 12) Posted: Tue Jul 13, 2004 11:39 am Post subject: Re: How to check a connection [Login to view extended thread Info.] Archived from groups: per prev. post (more info?)

brucie wrote: > in post: <news:2lgibcFcf15tU1@uni-berlin.de> > SpaceGirl <NOspaceSPAMgirl.TakeThisOut@subhuman.net> said: > > >>Do people really leave ICMP open these days? I thought almost all >>firewalls didn't reply to pings. > > > i'll open my ports for anyone but i'm a slut. > I know, it's on your business card. But there's no need to broadcast it in here! You'll never cope with all the new clients! Or... something. God... I'm so tired I'm just coasting here. Someone drag me to bed for godsake! zzzzzzzZZZZZZZZZZZZZZZZZZZZzzzzzzzzzzzzzzzzzzzzzz -- x theSpaceGirl (miranda) # lead designer @ <a style='text-decoration: underline;' href="http://www.dhnewmedia.com" target="_blank">http://www.dhnewmedia.com</a> # # remove NO SPAM to email, or use form on website #<!-- ~MESSAGE_AFTER~ --> >> Stay informed about: How to check a connection

user94

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Since: Sep 14, 2004
Posts: 2384

(Msg. 13) Posted: Tue Jul 13, 2004 11:39 am Post subject: Re: How to check a connection [Login to view extended thread Info.] Archived from groups: per prev. post (more info?)

SpaceGirl wrote: > Or... something. God... I'm so tired I'm just coasting here. Someone > drag me to bed for godsake! Me me me! -- Charles Sweeney <a style='text-decoration: underline;' href="http://CharlesSweeney.com" target="_blank">http://CharlesSweeney.com</a><!-- ~MESSAGE_AFTER~ --> >> Stay informed about: How to check a connection

user272

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Since: Oct 23, 2003
Posts: 137

(Msg. 14) Posted: Tue Jul 13, 2004 3:14 pm Post subject: Re: How to check a connection [Login to view extended thread Info.] Archived from groups: per prev. post (more info?)

SpaceGirl wrote: >> The ping will tell you that the machine is up but that doesn't >> necessarily mean that the web server is up and serving. You could try a >> HEAD request on mms.dll or another file on the server but this (or >> running a ping) might take more time to execute than actually making a >> request for mms.dll and using a short timeout. > > Do people really leave ICMP open these days? I thought almost all > firewalls didn't reply to pings. > To a properly constructed firewall ping can be allowed, just set the rate to a loow value say 1 every second and your fine. -- There are 10 types of people in this world Those that understand binary and those that don't<!-- ~MESSAGE_AFTER~ --> >> Stay informed about: How to check a connection

usenet200407

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Since: Jul 12, 2004
Posts: 88

(Msg. 15) Posted: Wed Jul 14, 2004 2:08 pm Post subject: Re: How to check a connection [Login to view extended thread Info.] Archived from groups: per prev. post (more info?)

SpaceGirl wrote: > Do people really leave ICMP open these days? I thought almost all > firewalls didn't reply to pings. > # lead designer @ <a style='text-decoration: underline;' href="http://www.dhnewmedia.com" target="_blank">http://www.dhnewmedia.com</a> # [tai@ophelia (pts/1) ~]$ ping -c4 <a style='text-decoration: underline;' href="http://www.dhnewmedia.com" target="_blank">www.dhnewmedia.com</a> PING <a style='text-decoration: underline;' href="http://www.dhnewmedia.com" target="_blank">www.dhnewmedia.com</a> (66.245.184.192) 56(84) bytes of data. 64 bytes from 66.245.184.192: icmp_seq=1 ttl=111 time=103 ms 64 bytes from 66.245.184.192: icmp_seq=2 ttl=111 time=108 ms 64 bytes from 66.245.184.192: icmp_seq=3 ttl=111 time=105 ms 64 bytes from 66.245.184.192: icmp_seq=4 ttl=111 time=105 ms --- <a style='text-decoration: underline;' href="http://www.dhnewmedia.com" target="_blank">www.dhnewmedia.com</a> ping statistics --- 4 packets transmitted, 4 received, 0% packet loss, time 3029ms rtt min/avg/max/mdev = 103.652/105.859/108.457/1.756 ms -- Toby A Inkster BSc (Hons) ARCS Contact Me - <a style='text-decoration: underline;' href="http://www.goddamn.co.uk/tobyink/?page=132" target="_blank">http://www.goddamn.co.uk/tobyink/?page=132</a><!-- ~MESSAGE_AFTER~ --> >> Stay informed about: How to check a connection

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