Write data to remote host over TCP/IP
Write and Read uint8 Data from Remote Host
Create a TCP/IP client connection called
t, connecting to a TCP/IP echo server with port 4000. To do so, you must have an
echotcpip server running on port 4000.
echotcpip("on",4000) t = tcpclient("localhost",4000)
t = tcpclient with properties: Address: 'localhost' Port: 4000 NumBytesAvailable: 0 Show all properties, functions
write function synchronously writes data to the remote host connected to
t. First specify the data and then write the data. The function suspends MATLAB execution until the specified number of values is written to the remote host.
Assign 10 bytes of
uint8 data to the variable
data = uint8(1:10)
data = 1×10 uint8 row vector 1 2 3 4 5 6 7 8 9 10
View the data.
Name Size Bytes Class Attributes data 1x10 10 uint8
Write data to the echo server.
Confirm the success of the writing operation by viewing the
ans = 10
Since the client is connected to an echo server, the data you write to the server is returned to the client. Read all the bytes of data available.
ans = 1×10 uint8 row vector 1 2 3 4 5 6 7 8 9 10
read function with no arguments reads all available bytes of data from
t connected to the remote host and returns the data. The number of values read is determined by the
NumBytesAvailable property, which is the number of bytes available in the input buffer.
Close the connection between the TCP/IP client and the remote host by clearing the object. Turn off the
clear t echotcpip("off")
t — TCP/IP client
TCP/IP client, specified as a
write(t,data) writes to the TCP/IP client
data — Numeric or ASCII data
numeric | character vector | string scalar
Numeric or ASCII data, specified as a row (1-by-
N) or column
N-by-1) vector of numeric values or as a character vector or
string scalar of text. For all numeric
data is a row vector of values.
write(t,1:5) writes the values
datatype — Size and format of each value
"uint8" (default) |
Size and format of each value, specified as a character vector or string.
datatype determines the number of bytes to write for each value
and the interpretation of those bytes as a MATLAB data type.
write(t,1:5,"double") writes the values
[1,2,3,4,5] as double data.