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sending line packets without zero padding

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This commit is contained in:
Dominik Macháček 2024-02-21 15:36:16 +01:00
parent c8123344c6
commit 706b7f847e
1 changed files with 3 additions and 3 deletions
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6
line_packet.py
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@ -16,7 +16,7 @@ containing:
PACKET_SIZE = 65536 PACKET_SIZE = 65536
def send_one_line(socket, text): def send_one_line(socket, text, pad_zeros=False):
"""Sends a line of text over the given socket. """Sends a line of text over the given socket.
The 'text' argument should contain a single line of text (line break The 'text' argument should contain a single line of text (line break
@ -36,12 +36,12 @@ def send_one_line(socket, text):
lines = text.splitlines() lines = text.splitlines()
first_line = '' if len(lines) == 0 else lines[0] first_line = '' if len(lines) == 0 else lines[0]
# TODO Is there a better way of handling bad input than 'replace'? # TODO Is there a better way of handling bad input than 'replace'?
data = first_line.encode('utf-8', errors='replace') + b'\n\0' data = first_line.encode('utf-8', errors='replace') + b'\n' + (b'\0' if pad_zeros else b'')
for offset in range(0, len(data), PACKET_SIZE): for offset in range(0, len(data), PACKET_SIZE):
bytes_remaining = len(data) - offset bytes_remaining = len(data) - offset
if bytes_remaining < PACKET_SIZE: if bytes_remaining < PACKET_SIZE:
padding_length = PACKET_SIZE - bytes_remaining padding_length = PACKET_SIZE - bytes_remaining
packet = data[offset:] + b'\0' * padding_length packet = data[offset:] + (b'\0' * padding_length if pad_zeros else b'')
else: else:
packet = data[offset:offset+PACKET_SIZE] packet = data[offset:offset+PACKET_SIZE]
socket.sendall(packet) socket.sendall(packet)