import re
import struct

def read_u16_le(data: bytes, offset: int) -> int:
    if offset + 2 > len(data):
        return None
    return struct.unpack_from('<H', data, offset)[0]

# Let's read the log line by line and reconstruct packets
with open("/home/prathiyuman/Prathiyuman/ContecMonitor/fiveparaminte-main/hl7_forwarder.log", "r") as f:
    lines = f.readlines()

# We want to find raw reads and buffer state
# The server logs:
# "Received {len} bytes from ... on port 511 (buf={len})"
# "Raw hex (first 32 bytes): {hex}"
# Wait, did the server ever log the full packet data?
# Let's look at the log lines.
print("Searching for raw hex data logs...")
hex_patterns = []
for line in lines[:5000]:
    m = re.search(r"Raw hex \(first 32 bytes\): ([0-9a-fA-F]+)", line)
    if m:
        hex_patterns.append(m.group(1))

print(f"Total raw hex logs: {len(hex_patterns)}")
if hex_patterns:
    print(f"Example raw hex: {hex_patterns[0]}")