How to Read data unblock?

[zhougb3]

Now I use telnet.DialTo to get a conn.I use this conn to Read bytes using the function conn.Read().However,it is blocked.How can I solve this problem,thank you! Idon't know how many bytes i will receive.ButI want to receive all of them

[calvincramer]

I did some testing on this problem. I was using an expect library on top of the telnet connection. The issue I saw was that the reiver telnet connection would block forever until all bytes are available.

I solved this using a different telnet library https://pkg.go.dev/github.com/ziutek/telnet

I tested ziutek's library by making a simple telnet server that just sends a simple message when clients connect, and could see on Read() with zuitek any unavailable bytes will be set to 0 (eager read), while the reiver connection will block.

[typenoob]

Because telnet connection is interactive, it never sends EOF in the active connection.
Glance at telnetlib in python, it use file description to determine whether there's remaining data in the socket.
Another approach is to use SetReadDeadline to set the timeout of the read process.
But this library not implement SetReadDeadline function.Also we can't get file description from existing API either.
Maybe the contributors can consider improving it.