short reads #5
Description
So one common use with websockets is to exchange JSON docs back and forth. They are self delimiting, but doing byte-at-a-time parsing can be excruciatingly slow.
json.load does this:
return loads(fp.read(),
cls=cls, object_hook=object_hook,
parse_float=parse_float, parse_int=parse_int,
parse_constant=parse_constant, object_pairs_hook=object_pairs_hook, **kw)
- that is it reads the entire stream.
with the current stream definition folk need to do a loop on read(1), repeatedly trying to decode until they get a valid object. If we permitted the normal language read has in the io - 'up to N bytes' - then it would be safe to call read(65536) to read in a decent amount at once, and yet not block.