varun-r-mallya/py-libp2p
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Refactor

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This commit is contained in:
mhchia
2020-02-17 19:02:18 +08:00
parent 874c6bbca4
commit 2df47a943c
5 changed files with 63 additions and 75 deletions
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15
libp2p/io/msgio.py
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@ -11,8 +11,7 @@ from typing import Optional
from libp2p.io.abc import MsgReadWriter, Reader, ReadWriteCloser
from libp2p.io.utils import read_exactly
SIZE_NOISE_LEN_BYTES = 2
SIZE_SECIO_LEN_BYTES = 4
BYTE_ORDER = "big"
@ -22,7 +21,13 @@ async def read_length(reader: Reader, size_len_bytes: int) -> int:
def encode_msg_with_length(msg_bytes: bytes, size_len_bytes: int) -> bytes:
len_prefix = len(msg_bytes).to_bytes(size_len_bytes, byteorder=BYTE_ORDER)
try:
len_prefix = len(msg_bytes).to_bytes(size_len_bytes, byteorder=BYTE_ORDER)
except OverflowError:
raise ValueError(
"msg_bytes is too large for `size_len_bytes` bytes length: "
f"msg_bytes={msg_bytes}, size_len_bytes={size_len_bytes}"
)
return len_prefix + msg_bytes
@ -58,7 +63,3 @@ class BaseMsgReadWriter(MsgReadWriter):
async def write_msg(self, msg: bytes) -> None:
data = encode_msg_with_length(msg, self.size_len_bytes)
await self.read_write_closer.write(data)
class MsgIOReadWriter(BaseMsgReadWriter):
size_len_bytes = SIZE_SECIO_LEN_BYTES