[iolib-devel] Bug when using READ-LINE on non-blocking fds

[Chaitanya Gupta]

Hi,

Iolib behaves in the following way when using READ-LINE with a 
non-blocking fd:

;; *client-stream is the stream associated with a client connected to 
our server

IRCD> *client-stream
#<active IPv6 stream socket connected to ::ffff:127.0.0.1/41460 
{1004D5D451}>

IRCD> (fd-non-blocking *)
T

;; client sends the string "foo" down the socket, no newline is sent

IRCD> (ignore-errors (read-line *client-stream))
NIL
#<System-Error EWOULDBLOCK(11) "Resource temporarily unavailable">

;; client sends the string "bar", followed by a newline

IRCD> (ignore-errors (read-line *client-stream))
"bar"
NIL

So, essentially, the string "foo" is lost. Shouldn't the correct 
behaviour be to wait till a newline arrives on the socket?

Chaitanya