Tcl
Tcl
Receive Text up to a Delimiter Byte
See more Socket/SSL/TLS Examples
Demonstrates Socket.ReceiveStringUntilByte, which receives bytes until a specific raw byte value is found, then decodes the preceding bytes using StringCharset. The delimiter is excluded from the returned string.
Background. The delimiter search is purely byte-oriented and does not recognize character boundaries. A common delimiter is the linefeed byte (decimal 10).
Chilkat Tcl Downloads
load ./chilkat.dll
set success 0
set socket [new_CkSocket]
# Connect to the server using TLS. The 3rd argument enables the TLS handshake after the TCP
# connection succeeds; the 4th is the maximum time to wait, in milliseconds.
set bTls 1
set maxWaitMs 5000
set success [CkSocket_Connect $socket "example.com" 5000 $bTls $maxWaitMs]
if {$success == 0} then {
puts [CkSocket_lastErrorText $socket]
delete_CkSocket $socket
exit
}
# StringCharset controls the character encoding used when sending and receiving text.
CkSocket_put_StringCharset $socket "utf-8"
# Send a request using a simple application-defined text protocol in which each message ends with a
# CRLF.
set command "STATUS\r\n"
set success [CkSocket_SendString $socket $command]
if {$success == 0} then {
puts [CkSocket_lastErrorText $socket]
delete_CkSocket $socket
exit
}
# Receive bytes until a specific raw byte value is found, then decode the preceding bytes using
# StringCharset. The delimiter itself is excluded from the returned string. Here the delimiter is
# the linefeed byte (decimal 10).
set line [CkSocket_receiveStringUntilByte $socket 10]
if {[CkSocket_get_LastMethodSuccess $socket] == 0} then {
puts [CkSocket_lastErrorText $socket]
delete_CkSocket $socket
exit
}
puts "$line"
delete_CkSocket $socket