C Telnet Library

Question

Is there a good  free telnet library available for C   not ASP  NET   I have found a few on google  but they all have one issue or another  don t support login password  don t support a scripted mode    I am assuming that MS still has not included a telnet library as part of  NET v3 5 as I couldn t find it if it was  I would loooooove to be wrong though

User · Answer

I am currently evaluating two  NET  v2 0  C  Telnet libraries that may be of interest    http   www thoughtproject com Libraries Telnet   http   dotnettelnet sourceforge net    Hope this helps   Regards  Andy

User · Answer

I ended up finding MinimalistTelnet and adapted it to my uses  I ended up needing to be able to heavily modify the code due to the unique   device that I am attempting to attach to      Unique in this instance can be validly interpreted as brain-dead

User · Answer

I doubt very much a telnet library will ever be part of the  Net BCL  although you do have almost full socket support so it wouldnt be too hard to emulate a telnet client  Telnet in its general implementation is a legacy and dying technology that where exists generally sits behind a nice new modern facade  In terms of Unix Linux variants you ll find that out the box its SSH and enabling telnet is generally considered poor practice   You could check out  http   granados sourceforge net  - SSH Library for  Net http   www tamirgal com home dev aspx Item SharpSsh  You ll still need to put in place your own wrapper to handle events for feeding in input in a scripted manner

User · Answer

Here is my code that is finally working  using System  using System IO  using System Net  using System Net Sockets  using System Text RegularExpressions  using System Threading   class TelnetTest        static void Main string   args                TelnetTest tt   new TelnetTest             tt tcpClient   new TcpClient  myserver   23           tt ns   tt tcpClient GetStream             tt connectHost  admin    admin            tt sendCommand             tt tcpClient Close           public void connectHost string user  string passwd        bool i   true      while  i                Console WriteLine  Connecting                 Byte   output   new Byte 1024           String responseoutput   String Empty          Byte   cmd   System Text Encoding ASCII GetBytes   n            ns Write cmd  0  cmd Length            Thread Sleep 1000           Int32 bytes   ns Read output  0  output Length           responseoutput   System Text Encoding ASCII GetString output  0  bytes           Console WriteLine  Responseoutput      responseoutput           Regex objToMatch   new Regex  login             if  objToMatch IsMatch responseoutput                cmd   System Text Encoding ASCII GetBytes user     r               ns Write cmd  0  cmd Length                      Thread Sleep 1000           bytes   ns Read output  0  output Length           responseoutput   System Text Encoding ASCII GetString output  0  bytes           Console Write responseoutput           objToMatch   new Regex  Password            if  objToMatch IsMatch responseoutput                         cmd   System Text Encoding ASCII GetBytes passwd     r                ns Write cmd  0  cmd Length                      Thread Sleep 1000           bytes   ns Read output  0  output Length           responseoutput   System Text Encoding ASCII GetString output  0  bytes           Console Write  Responseoutput      responseoutput            objToMatch   new Regex               if  objToMatch IsMatch responseoutput                         i   false                        Console WriteLine  Just works

User · Answer

Best C  Telnet Lib I ve found is called Minimalistic Telnet   Very easy to understand  use and modify   It works great for the Cisco routers I need to configure   http   www codeproject com KB IP MinimalisticTelnet aspx

User · Answer

I ended up finding MinimalistTelnet and adapted it to my uses  I ended up needing to be able to heavily modify the code due to the unique   device that I am attempting to attach to      Unique in this instance can be validly interpreted as brain-dead

User · Answer

Best C  Telnet Lib I ve found is called Minimalistic Telnet   Very easy to understand  use and modify   It works great for the Cisco routers I need to configure   http   www codeproject com KB IP MinimalisticTelnet aspx

User · Answer

I ended up finding MinimalistTelnet and adapted it to my uses  I ended up needing to be able to heavily modify the code due to the unique   device that I am attempting to attach to      Unique in this instance can be validly interpreted as brain-dead

User · Answer

Another one with a different concept  http   www klausbasan de misc telnet index html

User · Answer

I doubt very much a telnet library will ever be part of the  Net BCL  although you do have almost full socket support so it wouldnt be too hard to emulate a telnet client  Telnet in its general implementation is a legacy and dying technology that where exists generally sits behind a nice new modern facade  In terms of Unix Linux variants you ll find that out the box its SSH and enabling telnet is generally considered poor practice   You could check out  http   granados sourceforge net  - SSH Library for  Net http   www tamirgal com home dev aspx Item SharpSsh  You ll still need to put in place your own wrapper to handle events for feeding in input in a scripted manner

User · Answer

Here is my code that is finally working  using System  using System IO  using System Net  using System Net Sockets  using System Text RegularExpressions  using System Threading   class TelnetTest        static void Main string   args                TelnetTest tt   new TelnetTest             tt tcpClient   new TcpClient  myserver   23           tt ns   tt tcpClient GetStream             tt connectHost  admin    admin            tt sendCommand             tt tcpClient Close           public void connectHost string user  string passwd        bool i   true      while  i                Console WriteLine  Connecting                 Byte   output   new Byte 1024           String responseoutput   String Empty          Byte   cmd   System Text Encoding ASCII GetBytes   n            ns Write cmd  0  cmd Length            Thread Sleep 1000           Int32 bytes   ns Read output  0  output Length           responseoutput   System Text Encoding ASCII GetString output  0  bytes           Console WriteLine  Responseoutput      responseoutput           Regex objToMatch   new Regex  login             if  objToMatch IsMatch responseoutput                cmd   System Text Encoding ASCII GetBytes user     r               ns Write cmd  0  cmd Length                      Thread Sleep 1000           bytes   ns Read output  0  output Length           responseoutput   System Text Encoding ASCII GetString output  0  bytes           Console Write responseoutput           objToMatch   new Regex  Password            if  objToMatch IsMatch responseoutput                         cmd   System Text Encoding ASCII GetBytes passwd     r                ns Write cmd  0  cmd Length                      Thread Sleep 1000           bytes   ns Read output  0  output Length           responseoutput   System Text Encoding ASCII GetString output  0  bytes           Console Write  Responseoutput      responseoutput            objToMatch   new Regex               if  objToMatch IsMatch responseoutput                         i   false                        Console WriteLine  Just works

User · Answer

I doubt very much a telnet library will ever be part of the  Net BCL  although you do have almost full socket support so it wouldnt be too hard to emulate a telnet client  Telnet in its general implementation is a legacy and dying technology that where exists generally sits behind a nice new modern facade  In terms of Unix Linux variants you ll find that out the box its SSH and enabling telnet is generally considered poor practice   You could check out  http   granados sourceforge net  - SSH Library for  Net http   www tamirgal com home dev aspx Item SharpSsh  You ll still need to put in place your own wrapper to handle events for feeding in input in a scripted manner

User · Answer

I doubt very much a telnet library will ever be part of the  Net BCL  although you do have almost full socket support so it wouldnt be too hard to emulate a telnet client  Telnet in its general implementation is a legacy and dying technology that where exists generally sits behind a nice new modern facade  In terms of Unix Linux variants you ll find that out the box its SSH and enabling telnet is generally considered poor practice   You could check out  http   granados sourceforge net  - SSH Library for  Net http   www tamirgal com home dev aspx Item SharpSsh  You ll still need to put in place your own wrapper to handle events for feeding in input in a scripted manner

User · Answer

Another one  it is an older project but shares the complete source code  http   telnetcsharp codeplex com

User · Answer

I am currently evaluating two  NET  v2 0  C  Telnet libraries that may be of interest    http   www thoughtproject com Libraries Telnet   http   dotnettelnet sourceforge net    Hope this helps   Regards  Andy

User · Answer

Another one  it is an older project but shares the complete source code  http   telnetcsharp codeplex com

User · Answer

Another one with a different concept  http   www klausbasan de misc telnet index html

User · Answer

I ended up finding MinimalistTelnet and adapted it to my uses  I ended up needing to be able to heavily modify the code due to the unique   device that I am attempting to attach to      Unique in this instance can be validly interpreted as brain-dead

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