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TCP/IP Communication

Read and write data over TCP/IP interface

Transmission Control Protocol (TCP) is a transport protocol layered on top of the Internet Protocol (IP) and is one of the most used networking protocols. MATLAB^® support for TCP/IP client communication enables you to use network socket communication to connect to remote hosts from MATLAB for reading and writing both binary and ASCII data.

Use tcpclient to create a TCP/IP client that connects to a server or hardware and perform read and write operations.

Functions

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Connect and Configure

`tcpclient`	Create TCP/IP client connection with TCP/IP server
`echotcpip`	Start or stop TCP/IP echo server
`configureTerminator`	Set terminator for ASCII string communication with remote host over TCP/IP (Since R2020b)
`configureCallback`	Set callback function and trigger condition for communication with remote host over TCP/IP (Since R2020b)

Read and Write

`read`	Read data from remote host over TCP/IP
`readline`	Read line of ASCII string data from remote host over TCP/IP (Since R2020b)
`write`	Write data to remote host over TCP/IP
`writeline`	Write line of ASCII data to remote host over TCP/IP (Since R2020b)
`flush`	Clear buffers for communication with remote host over TCP/IP (Since R2020b)

Apps

TCP/IP Explorer	Connect to and communicate with TCP/IP server (Since R2021b)
Hardware Manager	Discover and get started with your hardware (Since R2022a)

Topics

TCP/IP Communication Overview
Use network socket communication to connect to remote hosts from MATLAB for reading and writing data over TCP/IP.
Create TCP/IP Client and Configure Settings
Connect to remote hosts or hardware from MATLAB for reading and writing data over TCP/IP.
Use Callbacks for TCP/IP Communication
Enhance TCP/IP communication by executing a callback function when a specified event occurs.
Write and Read Data over TCP/IP Interface
Write and read data to and from the remote host connected to the tcpclient object.
Configure Connection in TCP/IP Explorer
Specify the server to connect to in the TCP/IP Explorer app.
Get Started with Hardware Manager
Get the apps and add-ons to access your hardware from MATLAB.

Troubleshooting

Troubleshooting TCP/IP Client Interface

Troubleshoot the TCP/IP client interface.

Resolve TCP/IP Client Connection Errors

Troubleshoot creating a TCP/IP client.

Resolve TCP/IP Client Warning: Unable to Read Any Data

Troubleshoot when you receive no data and you get the warning message: 'tcpclient' unable to read any data.

Featured Examples

Communicate Binary and ASCII Data to an Echo Server Using TCP/IP

Set up an echo server and communicate with it using TCP/IP by creating a tcpclient object. Binary data and terminated string data are sent to the server and the server echoes the same data back to the client.

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