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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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  • N Navneet Hegde

    But this work's fine. MessageBox.Show(System.Text.RegularExpressions.Regex.IsMatch("123a123a123a123", @"^[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}:[0-9]{1,5}$", System.Text.RegularExpressions.RegexOptions.ExplicitCapture).ToString()); Thanks!

    Develop2Program & Program2Develop

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    Navneet Hegde
    wrote on last edited by
    #10

    Hmmmm not working for 2221.1.1:3000 Sorry!

    Develop2Program & Program2Develop

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    • N Navneet Hegde

      But this work's fine. MessageBox.Show(System.Text.RegularExpressions.Regex.IsMatch("123a123a123a123", @"^[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}:[0-9]{1,5}$", System.Text.RegularExpressions.RegexOptions.ExplicitCapture).ToString()); Thanks!

      Develop2Program & Program2Develop

      L Offline
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      leppie
      wrote on last edited by
      #11

      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))

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      • N Navneet Hegde

        Hmmmm not working for 2221.1.1:3000 Sorry!

        Develop2Program & Program2Develop

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        L Offline
        leppie
        wrote on last edited by
        #12

        Navneet Hegde wrote:

        Hmmmm not working for 2221.1.1:3000

        Well, that is not suppose to work...

        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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        • L leppie

          You need to escape the '.' else it will match anything.

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

          M Offline
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          Mirko1980
          wrote on last edited by
          #13

          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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          • 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

              L Offline
              L Offline
              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
              0
              • 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))

                N Offline
                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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                    L Offline
                    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

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                      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

                      J A 2 Replies Last reply
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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:


                        P Offline
                        P Offline
                        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[^]

                            R Offline
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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.

                                  A Offline
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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

                                  1 Reply Last reply
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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

                                    A Offline
                                    A Offline
                                    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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