String microRecv(NetHandle h, Int maxlen=-1, Int microtimeout=0)
h: The connection
maxlen: The maximum number of bytes to read (or unlimited, if negative). For TLS connections, this is always unlimited.
timeout: The number of microseconds to wait without input before timing out. The default is zero. For TLS connections, this parameter is ignored.
Reads up to maxlen bytes from the connection, and times out after timeout microseconds. Apart from the units the timeout is measured in, this is otherwise identical to recv