nim-libp2p/tests/testmplex.nim

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import unittest, sequtils, sugar
import chronos, nimcrypto/utils
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import ../libp2p/connection,
../libp2p/stream/lpstream,
../libp2p/tcptransport,
../libp2p/transport,
../libp2p/multiaddress,
../libp2p/muxers/mplex/mplex,
../libp2p/muxers/mplex/coder,
../libp2p/muxers/mplex/types,
../libp2p/muxers/mplex/channel
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type
TestEncodeStream = ref object of LPStream
handler*: proc(data: seq[byte])
method write*(s: TestEncodeStream,
msg: seq[byte],
msglen = -1):
Future[void] {.gcsafe.} =
s.handler(msg)
proc newTestEncodeStream(handler: proc(data: seq[byte])): TestEncodeStream =
new result
result.handler = handler
type
TestDecodeStream = ref object of LPStream
handler*: proc(data: seq[byte])
step*: int
msg*: seq[byte]
method readExactly*(s: TestDecodeStream,
pbytes: pointer,
nbytes: int): Future[void] {.async, gcsafe.} =
let buff: seq[byte] = s.msg
copyMem(pbytes, unsafeAddr buff[s.step], nbytes)
s.step += nbytes
proc newTestDecodeStream(): TestDecodeStream =
new result
result.step = 0
result.msg = fromHex("8801023137")
suite "Mplex":
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test "encode header":
proc testEncodeHeader(): Future[bool] {.async.} =
proc encHandler(msg: seq[byte]) =
check msg == fromHex("880102")
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let conn = newConnection(newTestEncodeStream(encHandler))
await conn.writeHeader(17, MessageType.New, 2)
result = true
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check:
waitFor(testEncodeHeader()) == true
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test "decode header":
proc testDecodeHeader(): Future[bool] {.async.} =
let conn = newConnection(newTestDecodeStream())
let (id, msgType) = await conn.readHeader()
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check id == 17
check msgType == MessageType.New
let data = await conn.readLp()
check cast[string](data) == "17"
result = true
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check:
waitFor(testDecodeHeader()) == true
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test "e2e - read/write initiator":
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proc testNewStream(): Future[bool] {.async.} =
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let ma: MultiAddress = Multiaddress.init("/ip4/127.0.0.1/tcp/53380")
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proc connHandler(conn: Connection) {.async, gcsafe.} =
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proc handleMplexListen(stream: Connection) {.async, gcsafe.} =
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await stream.writeLp("Hello from stream!")
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await stream.close()
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let mplexListen = newMplex(conn, handleMplexListen)
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await mplexListen.handle()
let transport1: TcpTransport = newTransport(TcpTransport)
await transport1.listen(ma, connHandler)
let transport2: TcpTransport = newTransport(TcpTransport)
let conn = await transport2.dial(ma)
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proc handleDial(stream: Connection) {.async, gcsafe.} = discard
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let mplexDial = newMplex(conn, handleDial)
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let dialFut = mplexDial.handle()
let stream = await mplexDial.newStream()
check cast[string](await stream.readLp()) == "Hello from stream!"
await conn.close()
await dialFut
result = true
check:
waitFor(testNewStream()) == true
test "e2e - read/write receiver":
proc testNewStream(): Future[bool] {.async.} =
let ma: MultiAddress = Multiaddress.init("/ip4/127.0.0.1/tcp/53381")
proc connHandler(conn: Connection) {.async, gcsafe.} =
proc handleMplexListen(stream: Connection) {.async, gcsafe.} =
let msg = await stream.readLp()
check cast[string](msg) == "Hello from stream!"
await stream.close()
let mplexListen = newMplex(conn, handleMplexListen)
await mplexListen.handle()
let transport1: TcpTransport = newTransport(TcpTransport)
await transport1.listen(ma, connHandler)
let transport2: TcpTransport = newTransport(TcpTransport)
let conn = await transport2.dial(ma)
proc handleDial(stream: Connection) {.async, gcsafe.} = discard
let mplexDial = newMplex(conn, handleDial)
let dialFut = mplexDial.handle()
let stream = await mplexDial.newStream()
await stream.writeLp("Hello from stream!")
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await conn.close()
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await dialFut
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result = true
check:
waitFor(testNewStream()) == true