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  4. Using Regex in C# for ip:port format

Using Regex in C# for ip:port format

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  • L leppie

    Sorry make that 123a123a123a123:1

    xacc.ide - now with TabsToSpaces support
    IronScheme - 1.0 beta 1 - out now!
    ((lambda (x) `((lambda (x) ,x) ',x)) '`((lambda (x) ,x) ',x))

    N Offline
    N Offline
    Navneet Hegde
    wrote on last edited by
    #14

    This should work @"^[0-9]{1,3}[.][0-9]{1,3}[.][0-9]{1,3}[.][0-9]{1,3}[:][0-9]{1,5}$" Thanks!

    Develop2Program & Program2Develop

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    • N Navneet Hegde

      This should work @"^[0-9]{1,3}[.][0-9]{1,3}[.][0-9]{1,3}[.][0-9]{1,3}[:][0-9]{1,5}$" Thanks!

      Develop2Program & Program2Develop

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      leppie
      wrote on last edited by
      #15

      Navneet Hegde wrote:

      This should work

      Rather use \. than [.] . Some regex implementations might see [.] as .

      xacc.ide - now with TabsToSpaces support
      IronScheme - 1.0 beta 1 - out now!
      ((lambda (x) `((lambda (x) ,x) ',x)) '`((lambda (x) ,x) ',x))

      N 1 Reply Last reply
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      • L leppie

        Navneet Hegde wrote:

        This should work

        Rather use \. than [.] . Some regex implementations might see [.] as .

        xacc.ide - now with TabsToSpaces support
        IronScheme - 1.0 beta 1 - out now!
        ((lambda (x) `((lambda (x) ,x) ',x)) '`((lambda (x) ,x) ',x))

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        N Offline
        Navneet Hegde
        wrote on last edited by
        #16

        Sure thx!

        Develop2Program & Program2Develop

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        • A Andy Rama

          Hi all, I am using C#.Net 2008. I am using following code to varify proper format (udp ip:port i.e "225.1.1.1:3000") of input string. But it is not working properly. System.Text.RegularExpressions.Regex regStr = new System.Text.RegularExpressions.Regex(@"\d{1,3}.\d{1,3}.\d{1,3}.\d{1,3}:\d{1,5}"); bool b; b = regStr.IsMatch("225.1.1.1:3000"); //return true b = regStr.IsMatch("2225.1.1.1:3000"); //return true. should return false Anybody knows proper regular expression for ip:port format? Can anyone give me good links for using Regex , regular expression in C#. Thanks in advance. Regards, Aniket A. Salunkhe

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          PIEBALDconsult
          wrote on last edited by
          #17

          I'd just try to open the port and let the framework figure it out.

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          • P PIEBALDconsult

            I'd just try to open the port and let the framework figure it out.

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            Luc Pattyn
            wrote on last edited by
            #18

            PIEBALDconsult wrote:

            let the framework figure it out.

            and miss all the fun regexing IPv6?

            Luc Pattyn [Forum Guidelines] [My Articles]


            Fixturized forever. :confused:


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            • A Andy Rama

              Hi all, I am using C#.Net 2008. I am using following code to varify proper format (udp ip:port i.e "225.1.1.1:3000") of input string. But it is not working properly. System.Text.RegularExpressions.Regex regStr = new System.Text.RegularExpressions.Regex(@"\d{1,3}.\d{1,3}.\d{1,3}.\d{1,3}:\d{1,5}"); bool b; b = regStr.IsMatch("225.1.1.1:3000"); //return true b = regStr.IsMatch("2225.1.1.1:3000"); //return true. should return false Anybody knows proper regular expression for ip:port format? Can anyone give me good links for using Regex , regular expression in C#. Thanks in advance. Regards, Aniket A. Salunkhe

              R Offline
              R Offline
              Roink
              wrote on last edited by
              #19

              Another thread came up with: @"^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}[:][0-9]{1,5}$" But what if you want to constrain the octets to ONLY values from 0 to 255? And what if you really wanna go whole hog and constrain the port to 0 to 65535? I don't know regular expressions that well, so I am curious. Roink

              Roink

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              • L Luc Pattyn

                PIEBALDconsult wrote:

                let the framework figure it out.

                and miss all the fun regexing IPv6?

                Luc Pattyn [Forum Guidelines] [My Articles]


                Fixturized forever. :confused:


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                PIEBALDconsult
                wrote on last edited by
                #20

                I'm more concerned about, "that which will come after IPv6". Let Microsoft do all the work, that's why I pay them. :-D

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                • R Roink

                  Another thread came up with: @"^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}[:][0-9]{1,5}$" But what if you want to constrain the octets to ONLY values from 0 to 255? And what if you really wanna go whole hog and constrain the port to 0 to 65535? I don't know regular expressions that well, so I am curious. Roink

                  Roink

                  J Offline
                  J Offline
                  J4amieC
                  wrote on last edited by
                  #21

                  Roink wrote:

                  But what if you want to constrain the octets to ONLY values from 0 to 255? And what if you really wanna go whole hog and constrain the port to 0 to 65535?

                  Then you head over to www.regexplib.com and you do a search[^]

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                  • J J4amieC

                    Roink wrote:

                    But what if you want to constrain the octets to ONLY values from 0 to 255? And what if you really wanna go whole hog and constrain the port to 0 to 65535?

                    Then you head over to www.regexplib.com and you do a search[^]

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                    Roink
                    wrote on last edited by
                    #22

                    As they say in Britain, Brilliant! Everything a growing RegEx coder needs! Thank you! Muchas gracias! Merci beaucoup!

                    Roink

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                    • R Roink

                      As they say in Britain, Brilliant! Everything a growing RegEx coder needs! Thank you! Muchas gracias! Merci beaucoup!

                      Roink

                      J Offline
                      J Offline
                      J4amieC
                      wrote on last edited by
                      #23

                      Roink wrote:

                      As they say in Britain, Brilliant

                      I think they say that in other countries too, not just here in GB!

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                      • J J4amieC

                        Roink wrote:

                        As they say in Britain, Brilliant

                        I think they say that in other countries too, not just here in GB!

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                        PIEBALDconsult
                        wrote on last edited by
                        #24

                        No, it's only there. :-D

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                        • M Mirko1980

                          That is true, too. You must also replace all the . with \. So, the regex is "^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d{1,5}$" Take in mind that also the above regex is not absolutely correct. For example, it matches also 999.999.999.999:3000.

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                          Andy Rama
                          wrote on last edited by
                          #25

                          Mirko1980 wrote:

                          "^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d{1,5}$"

                          Thanks. It's working to check proper format of string. Still I am working to check proper formt of string with correct ip address & port. Thanks & Regards, Aniket A. Salunkhe

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                          • R Roink

                            Another thread came up with: @"^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}[:][0-9]{1,5}$" But what if you want to constrain the octets to ONLY values from 0 to 255? And what if you really wanna go whole hog and constrain the port to 0 to 65535? I don't know regular expressions that well, so I am curious. Roink

                            Roink

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                            Andy Rama
                            wrote on last edited by
                            #26

                            Roink, Thanks for the solution. Following is working to check proper ip & port. I found this from regexlib.com. But still need to do varification for port as 0,00,000, etc or 0*. @"^(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5]):(\d{1,4}|[0-5]\d\d\d\d|[0-5]\d\d\d\d|6[0-4]\d\d\d|65[0-4]\d\d|655[0-2]\d|6553[0-5])$" Thanks & Regards, Aniket A. Salunkhe

                            modified on Wednesday, December 3, 2008 4:47 AM

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