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CkPython

Receive Text up to a Matching Sequence

See more Socket/SSL/TLS Examples

Demonstrates Socket.ReceiveUntilMatch, which receives bytes until an exact byte sequence is found. The match string is encoded using StringCharset and compared byte-for-byte.

Background. The comparison is case-sensitive with no Unicode normalization. This is useful for reading a message that ends with an application-defined marker delimiting the end of a response.

Chilkat CkPython Downloads

CkPython
import sys
import chilkat

success = False

socket = chilkat.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.
bTls = True
maxWaitMs = 5000
success = socket.Connect("example.com",5000,bTls,maxWaitMs)
if (success == False):
    print(socket.lastErrorText())
    sys.exit()

#  StringCharset controls the character encoding used when sending and receiving text.
socket.put_StringCharset("utf-8")
#  Send a request using a simple application-defined text protocol in which each message ends with a
#  CRLF.
command = "STATUS\r\n"
success = socket.SendString(command)
if (success == False):
    print(socket.lastErrorText())
    sys.exit()

#  Receive bytes until an exact byte sequence is found.  The match string is encoded using
#  StringCharset and compared byte-for-byte.  Here the server marks the end of its response with an
#  application-defined marker.
response = socket.receiveUntilMatch("<EOM>")
if (socket.get_LastMethodSuccess() == False):
    print(socket.lastErrorText())
    sys.exit()

print(response)