IBM AS400 Telnet characters lose or missing

[javitechjkd]

Hello, i hope you are ok.

I am having a issue with chars lose after doing a fwpage using telnetlib3, I don’t know if it is a bug or is not supported with CP1145

this is the program:

import asyncio, telnetlib3, nest_asyncio

nest_asyncio.apply()

host = "as400host"
async def shell(reader, writer):
    while True:
        # read stream until 'User' mark is found
        outp = await reader.read(1024)
        if not outp :
            # End of File
            break
        elif 'User  . . . . . . . . . . . . . .' in outp:
            writer.write('afteruserandpassword\r\r\r\r\rXOP\r2\r\x1B\x5B\x36\x7e') #  
        # display all server output
        print(outp, flush=True)
        
        
    # EOF
    print("Finalizado")

loop = asyncio.get_event_loop()
coro = telnetlib3.open_connection(host, 23, shell=shell,encoding="utf-8", encoding_errors='replace')
reader, writer = loop.run_until_complete(coro)
loop.run_until_complete(writer.protocol.waiter_closed)

I am having this issue with telnetlib and telnetlib3

Can you help me?

[jquast]

Try adding await writer.drain() after any writes

[jquast]

Try also print(repr(outp)), there could be special terminal sequences like clearing a line or screen that make it seem output is lost

[javitechjkd]

Hello again. It is possible to use cp1145 with telnetlib3? I have observed that instead Ñ i receive # so maibe this have something within.