nim-libp2p/tests/commontransport.nim

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{.used.}
import sequtils
import chronos, stew/byteutils
import ../libp2p/[stream/connection,
transports/transport,
upgrademngrs/upgrade,
multiaddress,
errors,
wire]
import ./helpers
type TransportProvider* = proc(): Transport {.gcsafe, raises: [Defect].}
proc commonTransportTest*(name: string, prov: TransportProvider, ma: string) =
suite name & " common tests":
teardown:
checkTrackers()
asyncTest "can handle local address":
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let ma = @[MultiAddress.init(ma).tryGet()]
let transport1 = prov()
await transport1.start(ma)
check transport1.handles(transport1.addrs[0])
await transport1.stop()
asyncTest "e2e: handle observedAddr":
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let ma = @[MultiAddress.init(ma).tryGet()]
let transport1 = prov()
await transport1.start(ma)
let transport2 = prov()
proc acceptHandler() {.async, gcsafe.} =
let conn = await transport1.accept()
check transport1.handles(conn.observedAddr)
await conn.close()
let handlerWait = acceptHandler()
let conn = await transport2.dial(transport1.addrs[0])
check transport2.handles(conn.observedAddr)
await conn.close() #for some protocols, closing requires actively reading, so we must close here
await allFuturesThrowing(
allFinished(
transport1.stop(),
transport2.stop()))
await handlerWait.wait(1.seconds) # when no issues will not wait that long!
asyncTest "e2e: handle write":
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let ma = @[MultiAddress.init(ma).tryGet()]
let transport1 = prov()
await transport1.start(ma)
proc acceptHandler() {.async, gcsafe.} =
let conn = await transport1.accept()
await conn.write("Hello!")
await conn.close()
let handlerWait = acceptHandler()
let transport2 = prov()
let conn = await transport2.dial(transport1.addrs[0])
var msg = newSeq[byte](6)
await conn.readExactly(addr msg[0], 6)
await conn.close() #for some protocols, closing requires actively reading, so we must close here
await allFuturesThrowing(
allFinished(
transport1.stop(),
transport2.stop()))
check string.fromBytes(msg) == "Hello!"
await handlerWait.wait(1.seconds) # when no issues will not wait that long!
asyncTest "e2e: handle read":
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let ma = @[MultiAddress.init(ma).tryGet()]
let transport1 = prov()
await transport1.start(ma)
proc acceptHandler() {.async, gcsafe.} =
let conn = await transport1.accept()
var msg = newSeq[byte](6)
await conn.readExactly(addr msg[0], 6)
check string.fromBytes(msg) == "Hello!"
await conn.close()
let handlerWait = acceptHandler()
let transport2 = prov()
let conn = await transport2.dial(transport1.addrs[0])
await conn.write("Hello!")
await conn.close() #for some protocols, closing requires actively reading, so we must close here
await handlerWait.wait(1.seconds) # when no issues will not wait that long!
await allFuturesThrowing(
allFinished(
transport1.stop(),
transport2.stop()))
asyncTest "e2e: handle dial cancellation":
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let ma = @[MultiAddress.init(ma).tryGet()]
let transport1 = prov()
await transport1.start(ma)
let transport2 = prov()
let cancellation = transport2.dial(transport1.addrs[0])
await cancellation.cancelAndWait()
check cancellation.cancelled
await allFuturesThrowing(
allFinished(
transport1.stop(),
transport2.stop()))
asyncTest "e2e: handle accept cancellation":
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let ma = @[MultiAddress.init(ma).tryGet()]
let transport1 = prov()
await transport1.start(ma)
let acceptHandler = transport1.accept()
await acceptHandler.cancelAndWait()
check acceptHandler.cancelled
await transport1.stop()
asyncTest "e2e should allow multiple local addresses":
when defined(windows):
# this randomly locks the Windows CI job
skip()
return
let addrs = @[MultiAddress.init(ma).tryGet(),
MultiAddress.init(ma).tryGet()]
let transport1 = prov()
await transport1.start(addrs)
proc acceptHandler() {.async, gcsafe.} =
while true:
let conn = await transport1.accept()
await conn.write("Hello!")
await conn.close()
let handlerWait = acceptHandler()
check transport1.addrs.len == 2
check transport1.addrs[0] != transport1.addrs[1]
var msg = newSeq[byte](6)
proc client(ma: MultiAddress) {.async.} =
let conn1 = await transport1.dial(ma)
await conn1.readExactly(addr msg[0], 6)
check string.fromBytes(msg) == "Hello!"
await conn1.close()
#Dial the same server multiple time in a row
await client(transport1.addrs[0])
await client(transport1.addrs[0])
await client(transport1.addrs[0])
#Dial the same server on different addresses
await client(transport1.addrs[1])
await client(transport1.addrs[0])
await client(transport1.addrs[1])
#Cancel a dial
#TODO add back once chronos fixes cancellation
#let
# dial1 = transport1.dial(transport1.addrs[1])
# dial2 = transport1.dial(transport1.addrs[0])
#await dial1.cancelAndWait()
#await dial2.cancelAndWait()
await handlerWait.cancelAndWait()
await transport1.stop()
asyncTest "e2e: stopping transport kills connections":
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let ma = @[MultiAddress.init(ma).tryGet()]
let transport1 = prov()
await transport1.start(ma)
let transport2 = prov()
let acceptHandler = transport1.accept()
let conn = await transport2.dial(transport1.addrs[0])
let serverConn = await acceptHandler
await allFuturesThrowing(
allFinished(
transport1.stop(),
transport2.stop()))
check serverConn.closed()
check conn.closed()
asyncTest "read or write on closed connection":
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let ma = @[MultiAddress.init(ma).tryGet()]
let transport1 = prov()
await transport1.start(ma)
proc acceptHandler() {.async, gcsafe.} =
let conn = await transport1.accept()
await conn.close()
let handlerWait = acceptHandler()
let conn = await transport1.dial(transport1.addrs[0])
var msg = newSeq[byte](6)
try:
await conn.readExactly(addr msg[0], 6)
check false
except CatchableError as exc:
check true
# we don't HAVE to throw on write on EOF
# (at least TCP doesn't)
try:
await conn.write(msg)
except CatchableError as exc:
check true
await conn.close() #for some protocols, closing requires actively reading, so we must close here
await handlerWait.wait(1.seconds) # when no issues will not wait that long!
await transport1.stop()