mirror of https://github.com/vacp2p/nim-libp2p.git
wip: mplex tests
This commit is contained in:
Dmitriy Ryajov
parent
b26d1ac23a
commit
96cd7bcf50
145
libp2p/mplex.nim
145
libp2p/mplex.nim
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@ -1,145 +0,0 @@
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## Nim-LibP2P
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## Copyright (c) 2018 Status Research & Development GmbH
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## Licensed under either of
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## * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE))
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## * MIT license ([LICENSE-MIT](LICENSE-MIT))
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## at your option.
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## This file may not be copied, modified, or distributed except according to
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## those terms.
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import chronos
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import ../varint, ../connection,
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../vbuffer, ../protocol
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const DefaultReadSize: uint = 1024
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const MaxMsgSize* = 1 shl 20 # 1mb
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const MaxChannels* = 1000
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type
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MplexUnknownMsgError* = object of CatchableError
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MessageType* {.pure.} = enum
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New,
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MsgIn,
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MsgOut,
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CloseIn,
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CloseOut,
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ResetIn,
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ResetOut
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ChannelHandler* = proc(conn: Connection) {.gcsafe.}
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Mplex* = ref object of LPProtocol
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remote*: seq[Connection]
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local*: seq[Connection]
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channelHandler*: ChannelHandler
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currentId*: uint
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Channel* = ref object of BufferStream
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id*: int
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initiator*: bool
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reset*: bool
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closedLocal*: bool
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closedRemote*: bool
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mplex*: Mplex
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proc newMplexUnknownMsgError*(): ref MplexUnknownMsgError =
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result = newException(MplexUnknownMsgError, "Unknown mplex message type")
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proc readLp*(conn: Connection): Future[tuple[id: uint, msgType: MessageType]] {.gcsafe.} =
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var
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header: uint
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length: int
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res: VarintStatus
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var buffer = newSeq[byte](10)
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try:
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for i in 0..<len(buffer):
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await conn.readExactly(addr buffer[i], 1)
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res = LP.getUVarint(buffer.toOpenArray(0, i), length, header)
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if res == VarintStatus.Success:
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break
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if res != VarintStatus.Success:
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buffer.setLen(0)
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except TransportIncompleteError:
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buffer.setLen(0)
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result.id = header shl 3
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result.msgType = MessageType(header and 0x7)
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proc writeLp*(conn: Connection, id: uint, msgType: MessageType) {.async, gcsafe.} =
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## write lenght prefixed
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var buf = initVBuffer()
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buf.writeVarint(LPSomeUVarint(id shl 3 or uint(msgType)))
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buf.finish()
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result = conn.write(buf.buffer)
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proc newChannel*(mplex: Mplex,
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id: int,
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initiator: bool,
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handler: WriteHandler,
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size: int = MaxMsgSize): Channel =
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new result
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result.id = id
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result.mplex = mplex
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result.initiator = initiator
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result.writeHandler = handler
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result.maxSize = size
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proc closed*(s: Channel): bool = s.closedLocal and s.closedRemote
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proc closeRemote*(s: Channel) = discard
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proc close*(s: Channel) = discard
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proc newStream*(m: Mplex,
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conn: Connection,
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initiator: bool = true):
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Connection {.gcsafe.}
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proc newMplex*(conn: Connection,
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handler: ChannelHandler,
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maxChanns: uint = MaxChannels): Mplex =
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new result
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result.channelHandler = handler
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proc processNewStream(m: Mplex, conn: Connection) {.async, gcsafe.} =
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discard
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proc procesMessage(m: Mplex, conn: Connection, initiator: bool) {.async, gcsafe.} =
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discard
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proc processClose(m: Mplex, conn: Connection, initiator: bool) {.async, gcsafe.} =
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discard
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proc processReset(m: Mplex, conn: Connection, initiator: bool) {.async, gcsafe.} =
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discard
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proc newStream*(m: Mplex,
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conn: Connection,
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initiator: bool = true):
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Connection {.gcsafe.} =
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## create new channel/stream
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let id = m.currentId
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inc(m.currentId)
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proc writeHandler(data: seq[byte]): Future[void] {.gcsafe.} =
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let msgType = if initiator: MessageType.MsgIn else: MessageType.MsgOut
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await conn.writeLp(id, msgType) # write header
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await conn.writeLp(data) # write data
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let channel = newChannel(m, id, initiator, writeHandler)
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result = newConnection(channel)
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method init(m: Mplex) =
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proc handle(conn: Connection, proto: string) {.async, closure, gcsafe.} =
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let (id, msgType) = await conn.readLp()
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case msgType:
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of MessageType.New:
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await m.processNewStream(conn)
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of MessageType.MsgIn, MessageType.MsgOut:
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await m.procesMessage(conn, bool(ord(msgType) and 1))
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of MessageType.CloseIn, MessageType.CloseOut:
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await m.processClose(conn, bool(ord(msgType) and 1))
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of MessageType.ResetIn, MessageType.ResetOut:
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await m.processReset(conn, bool(ord(msgType) and 1))
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else: raise newMplexUnknownMsgError()
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m.handler = handle
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@ -0,0 +1,162 @@
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## Nim-LibP2P
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## Copyright (c) 2018 Status Research & Development GmbH
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## Licensed under either of
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## * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE))
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## * MIT license ([LICENSE-MIT](LICENSE-MIT))
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## at your option.
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## This file may not be copied, modified, or distributed except according to
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## those terms.
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import sequtils
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import chronos
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import ../varint, ../connection,
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../vbuffer, ../protocol,
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../stream/bufferstream,
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muxer
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const MaxMsgSize* = 1 shl 20 # 1mb
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const MaxChannels* = 1000
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const MplexCodec* = "/mplex/6.7.0"
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type
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MplexUnknownMsgError* = object of CatchableError
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MessageType* {.pure.} = enum
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New,
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MsgIn,
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MsgOut,
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CloseIn,
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CloseOut,
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ResetIn,
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ResetOut
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StreamHandler = proc(conn: Connection): Future[void] {.gcsafe.}
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Mplex* = ref object of Muxer
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remote*: seq[Channel]
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local*: seq[Channel]
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currentId*: int
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maxChannels*: uint
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streamHandler*: StreamHandler
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Channel* = ref object of BufferStream
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id*: int
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initiator*: bool
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isReset*: bool
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closedLocal*: bool
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closedRemote*: bool
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mplex*: Mplex
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proc newMplexUnknownMsgError*(): ref MplexUnknownMsgError =
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result = newException(MplexUnknownMsgError, "Unknown mplex message type")
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##########################################
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## Read/Write Helpers
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##########################################
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proc readHeader*(conn: Connection): Future[(uint, MessageType)] {.async, gcsafe.} =
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var
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header: uint
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length: int
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res: VarintStatus
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var buffer = newSeq[byte](10)
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try:
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for i in 0..<len(buffer):
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await conn.readExactly(addr buffer[i], 1)
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res = LP.getUVarint(buffer.toOpenArray(0, i), length, header)
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if res == VarintStatus.Success:
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return (header shr 3, MessageType(header and 0x7))
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if res != VarintStatus.Success:
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buffer.setLen(0)
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return
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except TransportIncompleteError:
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buffer.setLen(0)
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proc writeHeader*(conn: Connection,
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id: int,
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msgType: MessageType,
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size: int) {.async, gcsafe.} =
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## write lenght prefixed
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var buf = initVBuffer()
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buf.writeVarint(LPSomeUVarint(id.uint shl 3 or msgType.uint))
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buf.writeVarint(LPSomeUVarint(size.uint))
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buf.finish()
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result = conn.write(buf.buffer)
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##########################################
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## Channel
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##########################################
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proc newChannel*(mplex: Mplex,
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id: int,
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initiator: bool,
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handler: WriteHandler,
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size: int = MaxMsgSize): Channel =
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new result
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result.id = id
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result.mplex = mplex
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result.initiator = initiator
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result.writeHandler = handler
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result.maxSize = size
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proc closed*(s: Channel): bool = s.closedLocal and s.closedRemote
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proc close*(s: Channel) {.async.} = discard
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proc reset*(s: Channel) {.async.} = discard
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##########################################
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##
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## Mplex
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##
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##########################################
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proc getChannelList(m: Mplex, initiator: bool): var seq[Channel] =
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if initiator:
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result = m.remote
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else:
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result = m.local
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proc newStream*(m: Mplex,
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chanId: int = -1,
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initiator: bool = true):
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Future[Connection] {.async, gcsafe.} =
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## create new channel/stream
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defer: inc(m.currentId)
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let id = if chanId > -1: chanId else: m.currentId
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proc writeHandler(data: seq[byte]): Future[void] {.async, gcsafe.} =
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let msgType = if initiator: MessageType.MsgIn else: MessageType.MsgOut
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await m.connection.writeHeader(id, msgType, data.len) # write header
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await m.connection.write(data) # write data
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let channel = newChannel(m, id, initiator, writeHandler)
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m.getChannelList(initiator)[id] = channel
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result = newConnection(channel)
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proc handle*(m: Mplex) {.async, gcsafe.} =
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while not m.connection.closed:
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let (id, msgType) = await m.connection.readHeader()
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let initiator = bool(ord(msgType) and 1)
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case msgType:
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of MessageType.New:
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await m.streamHandler(await m.newStream(id.int, false))
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of MessageType.MsgIn, MessageType.MsgOut:
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await m.getChannelList(initiator)[id.int].pushTo(await m.connection.readLp())
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of MessageType.CloseIn, MessageType.CloseOut:
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await m.getChannelList(initiator)[id.int].close()
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of MessageType.ResetIn, MessageType.ResetOut:
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await m.getChannelList(initiator)[id.int].reset()
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else: raise newMplexUnknownMsgError()
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proc newMplex*(conn: Connection,
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streamHandler: StreamHandler,
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maxChanns: uint = MaxChannels): Mplex =
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new result
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result.connection = conn
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result.maxChannels = maxChanns
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result.streamHandler = streamHandler
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method newStream*(m: Mplex): Future[Connection] {.gcsafe.} =
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result = m.newStream(true)
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method close(m: Mplex) {.async, gcsafe.} =
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let futs = @[allFutures(m.remote.mapIt(it.close())),
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allFutures(m.local.mapIt(it.close()))]
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await allFutures(futs)
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await m.connection.close()
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@ -0,0 +1,34 @@
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## Nim-LibP2P
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## Copyright (c) 2018 Status Research & Development GmbH
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## Licensed under either of
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## * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE))
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## * MIT license ([LICENSE-MIT](LICENSE-MIT))
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## at your option.
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## This file may not be copied, modified, or distributed except according to
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## those terms.
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import chronos
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import ../protocol, ../connection
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type
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Muxer* = ref object of RootObj
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connection*: Connection
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MuxerCreator* = proc(conn: Connection): Muxer {.gcsafe, closure.}
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# this wraps a creator proc that knows how to make muxers
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MuxerProvider* = ref object of LPProtocol
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newMuxer*: MuxerCreator
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proc newMuxerProvider*(creator: MuxerCreator, codec: string): MuxerProvider {.gcsafe.} =
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new result
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result.newMuxer = creator
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result.codec = codec
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method init(c: MuxerProvider) =
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proc handler(conn: Connection, proto: string) {.async, gcsafe, closure.} =
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let muxer = c.newMuxer(conn)
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c.handler = handler
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method newStream*(m: Muxer): Future[Connection] {.base, async, gcsafe.} = discard
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method close*(m: Muxer) {.base, async, gcsafe.} = discard
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@ -0,0 +1,90 @@
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import unittest, sequtils, sugar
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import chronos, nimcrypto/utils
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import ../libp2p/muxers/mplex, ../libp2p/connection,
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../libp2p/stream/lpstream, ../libp2p/tcptransport,
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../libp2p/transport, ../libp2p/multiaddress
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type
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TestEncodeStream = ref object of LPStream
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handler*: proc(data: seq[byte])
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method write*(s: TestEncodeStream,
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msg: seq[byte],
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msglen = -1):
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Future[void] {.gcsafe.} =
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s.handler(msg)
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proc newTestEncodeStream(handler: proc(data: seq[byte])): TestEncodeStream =
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new result
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result.handler = handler
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type
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TestDecodeStream = ref object of LPStream
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handler*: proc(data: seq[byte])
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step*: int
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msg*: seq[byte]
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method readExactly*(s: TestDecodeStream,
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pbytes: pointer,
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nbytes: int): Future[void] {.async, gcsafe.} =
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let buff: seq[byte] = s.msg
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copyMem(pbytes, unsafeAddr buff[s.step], nbytes)
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s.step += nbytes
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proc newTestDecodeStream(): TestDecodeStream =
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new result
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result.step = 0
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result.msg = fromHex("8801023137")
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suite "Mplex":
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# test "encode header":
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# proc testEncodeHeader(): Future[bool] {.async.} =
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# proc encHandler(msg: seq[byte]) =
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# check msg == fromHex("880102")
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# let conn = newConnection(newTestEncodeStream(encHandler))
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# await conn.writeHeader(uint(17), MessageType.New, 2)
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# result = true
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# check:
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# waitFor(testEncodeHeader()) == true
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# test "decode header":
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# proc testDecodeHeader(): Future[bool] {.async.} =
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# let conn = newConnection(newTestDecodeStream())
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# let (id, msgType) = await conn.readHeader()
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# check id == 17
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# check msgType == MessageType.New
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# let data = await conn.readLp()
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# check cast[string](data) == "17"
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# result = true
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# check:
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# waitFor(testDecodeHeader()) == true
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test "e2e - new stream":
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proc testNewStream(): Future[bool] {.async.} =
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let ma: MultiAddress = Multiaddress.init("/ip4/127.0.0.1/tcp/53351")
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proc connHandler(conn: Connection) {.async, gcsafe.} =
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proc handleListen(stream: Connection) {.async, gcsafe.} =
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await stream.writeLp("Hello from stream!")
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let mplexListen = newMplex(conn, handleListen)
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await mplexListen.handle()
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let transport1: TcpTransport = newTransport(TcpTransport)
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await transport1.listen(ma, connHandler)
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let transport2: TcpTransport = newTransport(TcpTransport)
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let conn = await transport2.dial(ma)
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proc handleDial(stream: Connection) {.async, gcsafe.} =
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let msg = await stream.readLp()
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let mplexDial = newMplex(conn, handleDial)
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let handleFut = mplexDial.handle()
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result = true
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check:
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waitFor(testNewStream()) == true
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