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rework with pipe

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This commit is contained in:
Dmitriy Ryajov 2020-04-17 15:54:03 -06:00
parent 22f0db1cde
commit 21e99c638d
2 changed files with 220 additions and 309 deletions
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55
libp2p/multistream.nim
View File

@ -15,7 +15,8 @@ import vbuffer,
stream, stream,
pushable, pushable,
asynciters, asynciters,
lenprefixed] lenprefixed,
utils]
logScope: logScope:
topic = "Multistream" topic = "Multistream"
@ -48,25 +49,6 @@ proc newMultistreamHandshakeException*(): ref Exception {.inline.} =
result = newException(MultistreamHandshakeException, result = newException(MultistreamHandshakeException,
"could not perform multistream handshake") "could not perform multistream handshake")
var appendNl: Through[seq[byte]] = proc (i: Source[seq[byte]]): Source[seq[byte]] {.gcsafe.} =
proc append(item: Future[seq[byte]]): Future[seq[byte]] {.async.} =
result = await item
result.add(byte('\n'))
return iterator(): Future[seq[byte]] {.closure.} =
for item in i:
yield append(item)
var stripNl: Through[seq[byte]] = proc (i: Source[seq[byte]]): Source[seq[byte]] {.gcsafe.} =
proc strip(item: Future[seq[byte]]): Future[seq[byte]] {.async.} =
result = await item
if result.len > 0 and result[^1] == byte('\n'):
result.setLen(result.high)
return iterator(): Future[seq[byte]] {.closure.} =
for item in i:
yield strip(item)
proc init*(M: type[MultistreamSelect]): MultistreamSelect = proc init*(M: type[MultistreamSelect]): MultistreamSelect =
M(codec: toSeq(Codec).mapIt( it.byte ), M(codec: toSeq(Codec).mapIt( it.byte ),
ls: Ls.toBytes(), ls: Ls.toBytes(),
@ -77,15 +59,15 @@ proc select*(m: MultistreamSelect,
conn: Connection, conn: Connection,
protos: seq[string]): protos: seq[string]):
Future[string] {.async.} = Future[string] {.async.} =
trace "initiating handshake", codec = m.codec trace "initiating handshake", codec = Codec,
proto = protos
var pushable = Pushable[seq[byte]].init() # pushable source var pushable = Pushable[seq[byte]].init() # pushable source
var source = pipe(pushable, var source = pipe(pushable,
appendNl, appendNl(),
m.lp.encoder, m.lp.encoder,
conn.toThrough, conn.toThrough,
m.lp.decoder, m.lp.decoder,
stripNl) stripNl())
# handshake first # handshake first
await pushable.push(m.codec) await pushable.push(m.codec)
@ -138,11 +120,11 @@ proc list*(m: MultistreamSelect,
var pushable = Pushable[seq[byte]].init() var pushable = Pushable[seq[byte]].init()
var source = pipe(pushable, var source = pipe(pushable,
appendNl, appendNl(),
m.lp.encoder, m.lp.encoder,
conn.toThrough, conn.toThrough,
m.lp.decoder, m.lp.decoder,
stripNl) stripNl())
await pushable.push(m.ls) # send ls await pushable.push(m.ls) # send ls
@ -156,15 +138,15 @@ proc list*(m: MultistreamSelect,
result = list result = list
proc handle*(m: MultistreamSelect, conn: Connection) {.async, gcsafe.} = proc handle*(m: MultistreamSelect, conn: Connection) {.async, gcsafe.} =
trace "handle: starting multistream handling" trace "starting multistream handling"
try: try:
var pushable = Pushable[seq[byte]].init() var pushable = Pushable[seq[byte]].init()
var source = pipe(pushable, var source = pipe(pushable,
appendNl, appendNl(),
m.lp.encoder, m.lp.encoder,
conn.toThrough, conn.toThrough,
m.lp.decoder, m.lp.decoder,
stripNl) stripNl())
for chunk in source: for chunk in source:
var msg = string.fromBytes((await chunk)) var msg = string.fromBytes((await chunk))
@ -181,8 +163,13 @@ proc handle*(m: MultistreamSelect, conn: Connection) {.async, gcsafe.} =
case msg: case msg:
of Ls: of Ls:
trace "listing protos" trace "listing protos"
for h in m.handlers: var protos: string
await pushable.push(h.proto.toBytes()) for i in 0..m.handlers.high:
protos &= m.handlers[i].proto
if i < m.handlers.high:
protos &= "\n"
await pushable.push(protos.toBytes())
of Codec: of Codec:
trace "handling handshake" trace "handling handshake"
await pushable.push(m.codec) await pushable.push(m.codec)

474
tests/testmultistream.nim
View File

@ -1,184 +1,84 @@
import unittest, strutils, sequtils, strformat, options import unittest, strutils, sequtils
import chronos import chronos, stew/byteutils
import ../libp2p/connection, import crypto/crypto,
../libp2p/multistream, streams/[stream, pushable, connection, utils, lenprefixed],
../libp2p/stream/lpstream, transports/[transport, tcptransport],
../libp2p/stream/bufferstream, protocols/protocol,
../libp2p/connection, multistream,
../libp2p/multiaddress, multiaddress,
../libp2p/transports/transport, peerinfo,
../libp2p/transports/tcptransport, peer
../libp2p/protocols/protocol,
../libp2p/crypto/crypto,
../libp2p/peerinfo,
../libp2p/peer
when defined(nimHasUsed): {.used.} when defined(nimHasUsed): {.used.}
## Mock stream for select test const
type CodecString = "/multistream/1.0.0"
TestSelectStream = ref object of LPStream TestProtoString = "/test/proto/1.0.0"
step*: int TestString = "HELLO"
method readExactly*(s: TestSelectStream, CodecBytes = @[19.byte, 47.byte, 109.byte,
pbytes: pointer, 117.byte, 108.byte, 116.byte,
nbytes: int): Future[void] {.async, gcsafe.} = 105.byte, 115.byte, 116.byte,
case s.step: 114.byte, 101.byte, 97.byte,
of 1: 109.byte, 47.byte, 49.byte,
var buf = newSeq[byte](1) 46.byte, 48.byte, 46.byte,
buf[0] = 19 48.byte, 10.byte]
copyMem(pbytes, addr buf[0], buf.len())
s.step = 2
of 2:
var buf = "/multistream/1.0.0\n"
copyMem(pbytes, addr buf[0], buf.len())
s.step = 3
of 3:
var buf = newSeq[byte](1)
buf[0] = 18
copyMem(pbytes, addr buf[0], buf.len())
s.step = 4
of 4:
var buf = "/test/proto/1.0.0\n"
copyMem(pbytes, addr buf[0], buf.len())
else:
copyMem(pbytes,
cstring("\0x3na\n"),
"\0x3na\n".len())
method write*(s: TestSelectStream, msg: seq[byte], msglen = -1) TestProtoBytes = @[18.byte, 47.byte, 116.byte,
{.async, gcsafe.} = discard 101.byte, 115.byte, 116.byte,
47.byte, 112.byte, 114.byte,
method write*(s: TestSelectStream, msg: string, msglen = -1) 111.byte, 116.byte, 111.byte,
{.async, gcsafe.} = discard 47.byte, 49.byte, 46.byte, 48.byte,
46.byte, 48.byte, 10.byte]
method close(s: TestSelectStream) {.async, gcsafe.} =
s.isClosed = true
proc newTestSelectStream(): TestSelectStream =
new result
result.step = 1
## Mock stream for handles `ls` test
type
LsHandler = proc(procs: seq[byte]): Future[void] {.gcsafe.}
TestLsStream = ref object of LPStream
step*: int
ls*: LsHandler
method readExactly*(s: TestLsStream,
pbytes: pointer,
nbytes: int):
Future[void] {.async.} =
case s.step:
of 1:
var buf = newSeq[byte](1)
buf[0] = 19
copyMem(pbytes, addr buf[0], buf.len())
s.step = 2
of 2:
var buf = "/multistream/1.0.0\n"
copyMem(pbytes, addr buf[0], buf.len())
s.step = 3
of 3:
var buf = newSeq[byte](1)
buf[0] = 3
copyMem(pbytes, addr buf[0], buf.len())
s.step = 4
of 4:
var buf = "ls\n"
copyMem(pbytes, addr buf[0], buf.len())
else:
copyMem(pbytes, cstring(Na), Na.len())
method write*(s: TestLsStream, msg: seq[byte], msglen = -1) {.async, gcsafe.} =
if s.step == 4:
await s.ls(msg)
method write*(s: TestLsStream, msg: string, msglen = -1)
{.async, gcsafe.} = discard
method close(s: TestLsStream) {.async, gcsafe.} =
s.isClosed = true
proc newTestLsStream(ls: LsHandler): TestLsStream {.gcsafe.} =
new result
result.ls = ls
result.step = 1
## Mock stream for handles `na` test
type
NaHandler = proc(procs: string): Future[void] {.gcsafe.}
TestNaStream = ref object of LPStream
step*: int
na*: NaHandler
method readExactly*(s: TestNaStream,
pbytes: pointer,
nbytes: int):
Future[void] {.async, gcsafe.} =
case s.step:
of 1:
var buf = newSeq[byte](1)
buf[0] = 19
copyMem(pbytes, addr buf[0], buf.len())
s.step = 2
of 2:
var buf = "/multistream/1.0.0\n"
copyMem(pbytes, addr buf[0], buf.len())
s.step = 3
of 3:
var buf = newSeq[byte](1)
buf[0] = 18
copyMem(pbytes, addr buf[0], buf.len())
s.step = 4
of 4:
var buf = "/test/proto/1.0.0\n"
copyMem(pbytes, addr buf[0], buf.len())
else:
copyMem(pbytes,
cstring("\0x3na\n"),
"\0x3na\n".len())
method write*(s: TestNaStream, msg: string, msglen = -1) {.async, gcsafe.} =
if s.step == 4:
await s.na(msg)
method close(s: TestNaStream) {.async, gcsafe.} =
s.isClosed = true
proc newTestNaStream(na: NaHandler): TestNaStream =
new result
result.na = na
result.step = 1
suite "Multistream select": suite "Multistream select":
test "test select custom proto": test "test select custom proto":
proc testSelect(): Future[bool] {.async.} = proc test(): Future[bool] {.async.} =
let ms = newMultistream() let pushable = Pushable[seq[byte]].init()
let conn = newConnection(newTestSelectStream()) pushable.sinkImpl = proc(s: Stream[seq[byte]]): Sink[seq[byte]] {.gcsafe.} =
result = (await ms.select(conn, @["/test/proto/1.0.0"])) == "/test/proto/1.0.0" return proc(i: Source[seq[byte]]) {.async, gcsafe.} =
check: (await i()) == CodecBytes
check: (await i()) == TestProtoBytes
await pushable.push(CodecBytes)
await pushable.push(TestProtoBytes)
await pushable.close()
let conn = Connection.init(pushable)
var ms = MultistreamSelect.init()
result = (await ms.select(conn, @[TestProtoString])) == TestProtoString
check: check:
waitFor(testSelect()) == true waitFor(test()) == true
test "test handle custom proto": test "test handle custom proto":
proc testHandle(): Future[bool] {.async.} = proc testHandle(): Future[bool] {.async.} =
let ms = newMultistream() var ms = MultistreamSelect.init()
let conn = newConnection(newTestSelectStream()) let pushable = Pushable[seq[byte]].init()
pushable.sinkImpl = proc(s: Stream[seq[byte]]): Sink[seq[byte]] {.gcsafe.} =
return proc(i: Source[seq[byte]]) {.async.} =
check: (await i()) == CodecBytes
check: (await i()) == TestProtoBytes
await pushable.close()
let conn = Connection.init(pushable)
var protocol: LPProtocol = new LPProtocol var protocol: LPProtocol = new LPProtocol
proc testHandler(conn: Connection, proc testHandler(conn: Connection, proto: string):
proto: string):
Future[void] {.async, gcsafe.} = Future[void] {.async, gcsafe.} =
check proto == "/test/proto/1.0.0" check: proto == TestProtoString
await conn.close() await conn.close()
protocol.handler = testHandler protocol.handler = testHandler
ms.addHandler("/test/proto/1.0.0", protocol) ms.addHandler(TestProtoString, protocol)
await ms.handle(conn) var handlerFut = ms.handle(conn)
await pushable.push(CodecBytes)
await pushable.push(TestProtoBytes)
await pushable.close()
await handlerFut
result = true result = true
check: check:
@ -186,22 +86,31 @@ suite "Multistream select":
test "test handle `ls`": test "test handle `ls`":
proc testLs(): Future[bool] {.async.} = proc testLs(): Future[bool] {.async.} =
let ms = newMultistream() var ms = MultistreamSelect.init()
let pushable = Pushable[seq[byte]].init()
pushable.sinkImpl = proc(s: Stream[seq[byte]]): Sink[seq[byte]] {.gcsafe.} =
return proc(i: Source[seq[byte]]) {.async.} =
check: (await i()) == CodecBytes
check: (await i()) == ("\x26/test/proto1/1.0.0\n" &
"/test/proto2/1.0.0\n").toBytes()
proc testLsHandler(proto: seq[byte]) {.async, gcsafe.} # forward declaration
let conn = newConnection(newTestLsStream(testLsHandler))
proc testLsHandler(proto: seq[byte]) {.async, gcsafe.} =
var strProto: string = cast[string](proto)
check strProto == "\x26/test/proto1/1.0.0\n/test/proto2/1.0.0\n"
await conn.close()
proc testHandler(conn: Connection, proto: string): Future[void] let conn = Connection.init(pushable)
{.async, gcsafe.} = discard
var protocol: LPProtocol = new LPProtocol var protocol: LPProtocol = new LPProtocol
protocol.handler = testHandler
protocol.handler = proc(conn: Connection, proto: string):
Future[void] {.async, gcsafe.} = discard
ms.addHandler("/test/proto1/1.0.0", protocol) ms.addHandler("/test/proto1/1.0.0", protocol)
ms.addHandler("/test/proto2/1.0.0", protocol) ms.addHandler("/test/proto2/1.0.0", protocol)
await ms.handle(conn)
var handlerFut = ms.handle(conn)
await pushable.push(CodecBytes) # handshake
await pushable.push("\3ls\n".toBytes())
await pushable.close()
await handlerFut
result = true result = true
check: check:
@ -209,23 +118,26 @@ suite "Multistream select":
test "test handle `na`": test "test handle `na`":
proc testNa(): Future[bool] {.async.} = proc testNa(): Future[bool] {.async.} =
let ms = newMultistream()
proc testNaHandler(msg: string): Future[void] {.async, gcsafe.} var ms = MultistreamSelect.init()
let conn = newConnection(newTestNaStream(testNaHandler)) let pushable = Pushable[seq[byte]].init()
pushable.sinkImpl = proc(s: Stream[seq[byte]]): Sink[seq[byte]] {.gcsafe.} =
proc testNaHandler(msg: string): Future[void] {.async, gcsafe.} = return proc(i: Source[seq[byte]]) {.async.} =
check cast[string](msg) == Na check: (await i()) == "\3na\n".toBytes()
await conn.close()
var protocol: LPProtocol = new LPProtocol var protocol: LPProtocol = new LPProtocol
proc testHandler(conn: Connection, proc testHandler(conn: Connection, proto: string):
proto: string): Future[void] {.async, gcsafe.} = discard
Future[void] {.async, gcsafe.} = discard
protocol.handler = testHandler protocol.handler = testHandler
ms.addHandler("/unabvailable/proto/1.0.0", protocol) ms.addHandler(TestProtoString, protocol)
await ms.handle(conn) let conn = Connection.init(pushable)
var handlerFut = ms.handle(conn)
await pushable.push("/invalid/proto".toBytes())
await conn.close()
await handlerFut
result = true result = true
check: check:
@ -236,134 +148,146 @@ suite "Multistream select":
let ma: MultiAddress = Multiaddress.init("/ip4/0.0.0.0/tcp/0") let ma: MultiAddress = Multiaddress.init("/ip4/0.0.0.0/tcp/0")
var protocol: LPProtocol = new LPProtocol var protocol: LPProtocol = new LPProtocol
proc testHandler(conn: Connection, proc testHandler(conn: Connection, proto: string):
proto: string): Future[void] {.async, gcsafe.} =
Future[void] {.async, gcsafe.} = var pushable = Pushable[seq[byte]].init()
check proto == "/test/proto/1.0.0" var lp = LenPrefixed.init()
await conn.writeLp("Hello!") var sink = pipe(pushable, lp.encoder, conn)
check: proto == TestProtoString
await pushable.push(CodecString.toBytes())
await pushable.push(TestProtoString.toBytes())
await pushable.push(TestString.toBytes())
await conn.close() await conn.close()
await sink
protocol.handler = testHandler protocol.handler = testHandler
let msListen = newMultistream() var msListen = MultistreamSelect.init()
msListen.addHandler("/test/proto/1.0.0", protocol) msListen.addHandler(TestProtoString, protocol)
proc connHandler(conn: Connection): Future[void] {.async, gcsafe.} = proc connHandler(conn: Connection): Future[void] {.async, gcsafe.} =
await msListen.handle(conn) await msListen.handle(conn)
let transport1: TcpTransport = newTransport(TcpTransport) let transport1: TcpTransport = newTransport(TcpTransport)
asyncCheck transport1.listen(ma, connHandler) let transportFut = await transport1.listen(ma, connHandler)
let msDial = newMultistream() let msDial = MultistreamSelect.init()
let transport2: TcpTransport = newTransport(TcpTransport) let transport2: TcpTransport = newTransport(TcpTransport)
let conn = await transport2.dial(transport1.ma) let conn = await transport2.dial(transport1.ma)
check (await msDial.select(conn, "/test/proto/1.0.0")) == true check: (await msDial.select(conn, TestProtoString)) == true
var lp = LenPrefixed.init()
var source = pipe(conn, lp.decoder)
let hello = string.fromBytes(await source())
result = hello == TestString
let hello = cast[string](await conn.readLp())
result = hello == "Hello!"
await conn.close() await conn.close()
await transport1.close()
await transportFut
check: check:
waitFor(endToEnd()) == true waitFor(endToEnd()) == true
test "e2e - ls": # test "e2e - ls":
proc endToEnd(): Future[bool] {.async.} = # proc endToEnd(): Future[bool] {.async.} =
let ma: MultiAddress = Multiaddress.init("/ip4/0.0.0.0/tcp/0") # let ma: MultiAddress = Multiaddress.init("/ip4/0.0.0.0/tcp/0")
let msListen = newMultistream() # let msListen = newMultistream()
var protocol: LPProtocol = new LPProtocol # var protocol: LPProtocol = new LPProtocol
protocol.handler = proc(conn: Connection, proto: string) {.async, gcsafe.} = # protocol.handler = proc(conn: Connection, proto: string) {.async, gcsafe.} =
await conn.close() # await conn.close()
proc testHandler(conn: Connection, # proc testHandler(conn: Connection,
proto: string): # proto: string):
Future[void] {.async.} = discard # Future[void] {.async.} = discard
protocol.handler = testHandler # protocol.handler = testHandler
msListen.addHandler("/test/proto1/1.0.0", protocol) # msListen.addHandler("/test/proto1/1.0.0", protocol)
msListen.addHandler("/test/proto2/1.0.0", protocol) # msListen.addHandler("/test/proto2/1.0.0", protocol)
let transport1: TcpTransport = newTransport(TcpTransport) # let transport1: TcpTransport = newTransport(TcpTransport)
proc connHandler(conn: Connection): Future[void] {.async, gcsafe.} = # proc connHandler(conn: Connection): Future[void] {.async, gcsafe.} =
await msListen.handle(conn) # await msListen.handle(conn)
asyncCheck transport1.listen(ma, connHandler) # asyncCheck transport1.listen(ma, connHandler)
let msDial = newMultistream() # let msDial = newMultistream()
let transport2: TcpTransport = newTransport(TcpTransport) # let transport2: TcpTransport = newTransport(TcpTransport)
let conn = await transport2.dial(transport1.ma) # let conn = await transport2.dial(transport1.ma)
let ls = await msDial.list(conn) # let ls = await msDial.list(conn)
let protos: seq[string] = @["/test/proto1/1.0.0", "/test/proto2/1.0.0"] # let protos: seq[string] = @["/test/proto1/1.0.0", "/test/proto2/1.0.0"]
await conn.close() # await conn.close()
result = ls == protos # result = ls == protos
check: # check:
waitFor(endToEnd()) == true # waitFor(endToEnd()) == true
test "e2e - select one from a list with unsupported protos": # test "e2e - select one from a list with unsupported protos":
proc endToEnd(): Future[bool] {.async.} = # proc endToEnd(): Future[bool] {.async.} =
let ma: MultiAddress = Multiaddress.init("/ip4/0.0.0.0/tcp/0") # let ma: MultiAddress = Multiaddress.init("/ip4/0.0.0.0/tcp/0")
var protocol: LPProtocol = new LPProtocol # var protocol: LPProtocol = new LPProtocol
proc testHandler(conn: Connection, # proc testHandler(conn: Connection,
proto: string): # proto: string):
Future[void] {.async, gcsafe.} = # Future[void] {.async, gcsafe.} =
check proto == "/test/proto/1.0.0" # check proto == "/test/proto/1.0.0"
await conn.writeLp("Hello!") # await conn.writeLp("Hello!")
await conn.close() # await conn.close()
protocol.handler = testHandler # protocol.handler = testHandler
let msListen = newMultistream() # let msListen = newMultistream()
msListen.addHandler("/test/proto/1.0.0", protocol) # msListen.addHandler("/test/proto/1.0.0", protocol)
proc connHandler(conn: Connection): Future[void] {.async, gcsafe.} = # proc connHandler(conn: Connection): Future[void] {.async, gcsafe.} =
await msListen.handle(conn) # await msListen.handle(conn)
let transport1: TcpTransport = newTransport(TcpTransport) # let transport1: TcpTransport = newTransport(TcpTransport)
asyncCheck transport1.listen(ma, connHandler) # asyncCheck transport1.listen(ma, connHandler)
let msDial = newMultistream() # let msDial = newMultistream()
let transport2: TcpTransport = newTransport(TcpTransport) # let transport2: TcpTransport = newTransport(TcpTransport)
let conn = await transport2.dial(transport1.ma) # let conn = await transport2.dial(transport1.ma)
check (await msDial.select(conn, # check (await msDial.select(conn,
@["/test/proto/1.0.0", "/test/no/proto/1.0.0"])) == "/test/proto/1.0.0" # @["/test/proto/1.0.0", "/test/no/proto/1.0.0"])) == "/test/proto/1.0.0"
let hello = cast[string](await conn.readLp()) # let hello = cast[string](await conn.readLp())
result = hello == "Hello!" # result = hello == "Hello!"
await conn.close() # await conn.close()
check: # check:
waitFor(endToEnd()) == true # waitFor(endToEnd()) == true
test "e2e - select one with both valid": # test "e2e - select one with both valid":
proc endToEnd(): Future[bool] {.async.} = # proc endToEnd(): Future[bool] {.async.} =
let ma: MultiAddress = Multiaddress.init("/ip4/0.0.0.0/tcp/0") # let ma: MultiAddress = Multiaddress.init("/ip4/0.0.0.0/tcp/0")
var protocol: LPProtocol = new LPProtocol # var protocol: LPProtocol = new LPProtocol
proc testHandler(conn: Connection, # proc testHandler(conn: Connection,
proto: string): # proto: string):
Future[void] {.async, gcsafe.} = # Future[void] {.async, gcsafe.} =
await conn.writeLp(&"Hello from {proto}!") # await conn.writeLp(&"Hello from {proto}!")
await conn.close() # await conn.close()
protocol.handler = testHandler # protocol.handler = testHandler
let msListen = newMultistream() # let msListen = newMultistream()
msListen.addHandler("/test/proto1/1.0.0", protocol) # msListen.addHandler("/test/proto1/1.0.0", protocol)
msListen.addHandler("/test/proto2/1.0.0", protocol) # msListen.addHandler("/test/proto2/1.0.0", protocol)
proc connHandler(conn: Connection): Future[void] {.async, gcsafe.} = # proc connHandler(conn: Connection): Future[void] {.async, gcsafe.} =
await msListen.handle(conn) # await msListen.handle(conn)
let transport1: TcpTransport = newTransport(TcpTransport) # let transport1: TcpTransport = newTransport(TcpTransport)
asyncCheck transport1.listen(ma, connHandler) # asyncCheck transport1.listen(ma, connHandler)
let msDial = newMultistream() # let msDial = newMultistream()
let transport2: TcpTransport = newTransport(TcpTransport) # let transport2: TcpTransport = newTransport(TcpTransport)
let conn = await transport2.dial(transport1.ma) # let conn = await transport2.dial(transport1.ma)
check (await msDial.select(conn, @["/test/proto2/1.0.0", "/test/proto1/1.0.0"])) == "/test/proto2/1.0.0" # check (await msDial.select(conn, @["/test/proto2/1.0.0", "/test/proto1/1.0.0"])) == "/test/proto2/1.0.0"
result = cast[string](await conn.readLp()) == "Hello from /test/proto2/1.0.0!" # result = cast[string](await conn.readLp()) == "Hello from /test/proto2/1.0.0!"
await conn.close() # await conn.close()
check: # check:
waitFor(endToEnd()) == true # waitFor(endToEnd()) == true