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conn_tcpip

version 1.0 (7.71 KB) by Alfonso Nieto-Castanon
transfer any MATLAB variables or files between two remote hosts using TCP/IP protocol (uses java.net, no toolboxes required)

17 Downloads

Updated 28 May 2021

From GitHub

View license on GitHub

conn_tcpip

ASCII/binary transfer between two remote MATLAB hosts using TCP/IP protocol

conn_tcpip manages TCP/IP client/server communication


COMMANDS:

conn_tcpip('open','server' [,PORT, PUBLICKEY])   : open TCP/IP port in local machine and waits for client to connect (default PORT=6111 KEY='')
                                                  If no PORT is entered, conn_tcpip will first attempt port 6111 and if that fails it will
                                                  bind instead to the first available port. 

conn_tcpip('open','client' [,IP, PORT, PRIVATEKEY]) : connect to server TCP/IP port at IP:PORT (default IP='127.0.0.1' PORT=6111 KEY='')
                                                  If a non-empty PUBLICKEY string was provided when opening the server, the server will reject 
                                                  any client connection where conn_tcpip('keypair',PRIVATEKEY) is different from PUBLICKEY
                                                  (note: use [PUBLICKEY,PRIVATEKEY]=conn_tcpip('keypair') to generate a one-time-use KEY pair)

conn_tcpip('write',VAR)                         : sends data (from server/client to client/server)
                                                  VAR may be any Matlab variable (numeric/string/cell/struct/etc.)
                                                  returns 1 if success, 0 if error

VAR = conn_tcpip('read')                        : receives data (from server/client to client/server)

conn_tcpip('writefromfile',FILENAME)            : sends raw data from file 
                                                  returns 1 if success, 0 if error

TIMESTAMP = conn_tcpip('readtofile',FILENAME)   : receives raw data and save it to file 
                                                  returns TIMESTAMP (conn_tcpip sethash timestamp) or MD5-hash (conn_tcpip sethash md5) of received data (empty if error)

conn_tcpip('close')                             : stops server/client
conn_tcpip('clear')                             : clears connection buffers

conn_tcpip('writekeepalive')                    : sends an empty/keepalive packet
conn_tcpip('sethash','md5')                     : uses MD5-hash to identify changes in files (slower)
conn_tcpip('sethash','timestamp')               : uses filesystem last-modified timestamps to identify changes in files (faster)
[publickey, privatekey] = conn_tcpip('keypair') : generates one-time-use public (used by server) & private (used by client) key pair
publickey = conn_tcpip('keypair', privatekey)   : generates public key (used by server) from user-defined private key (used by client)

EXAMPLES:

ON MACHINE #1 (server)

  >> conn_tcpip open server
  Opening port 6111...
  Waiting for client connection...
  *************************************************************************************************************

  To connect to this server from a different machine, use the Matlab syntax:
     conn_tcpip open client alfonsosmbp2018.lan

  To connect to this server using ssh-tunneling, use the following syntax instead:
     $(OS-command)     :   ssh -L 6111:localhost:6111 alfnie@alfonsosmbp2018.lan
     >(Matlab-command) :   conn_tcpip open client 127.0.0.1 6111

  *************************************************************************************************************

ON MACHINE #2 (client)

  >> conn_tcpip open client alfonsosmbp2018.lan
  Connecting to alfonsosmbp2018.lan:6111...
  Succesfully established connection to server

ON MACHINE #1 or #2

  >> conn_tcpip('write', rand(1,10));

ON MACHINE #2 or #1

  >> disp(conn_tcpip('read'));
  0.3902    0.8448    0.3720    0.7076    0.3457    0.8772    0.7505    0.4344    0.4007    0.3729

SEE ALSO: CONN (www.conn-toolbox.org)


                                               Copyright & licencing

This software is distributed under the MIT/X Consortium License

Copyright (c) 2009

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Cite As

Alfonso Nieto-Castanon (2021). conn_tcpip (https://github.com/alfnie/conn_tcpip/releases/tag/v1.0), GitHub. Retrieved .

MATLAB Release Compatibility
Created with R2021a
Compatible with R2013a and later releases
Platform Compatibility
Windows macOS Linux

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To view or report issues in this GitHub add-on, visit the GitHub Repository.
To view or report issues in this GitHub add-on, visit the GitHub Repository.