edb02104d2
This PR replaces `assert!` with `assertBEq` to fix issues where asserts didn't trigger the `ctest` due to being in a separate task. This was caused by panics not being caught in tasks, while IO errors were handled by the `AsyncTask` if we use the `block` function on them. --------- Co-authored-by: Henrik Böving <hargonix@gmail.com>
62 lines
1.6 KiB
Text
62 lines
1.6 KiB
Text
import Std.Internal.Async
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import Std.Internal.UV
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import Std.Net.Addr
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open Std.Internal.IO.Async.UDP
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open Std.Internal.IO.Async
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open Std.Net
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def assertBEq [BEq α] [ToString α] (actual expected : α) : IO Unit := do
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unless actual == expected do
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throw <| IO.userError <|
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s!"expected '{expected}', got '{actual}'"
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-- Define the Async monad
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structure Async (α : Type) where
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run : IO (AsyncTask α)
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namespace Async
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-- Monad instance for Async
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instance : Monad Async where
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pure x := Async.mk (pure (AsyncTask.pure x))
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bind ma f := Async.mk do
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let task ← ma.run
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task.bindIO fun a => (f a).run
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-- Await function to simplify AsyncTask handling
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def await (task : IO (AsyncTask α)) : Async α :=
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Async.mk task
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instance : MonadLift IO Async where
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monadLift io := Async.mk (io >>= (pure ∘ AsyncTask.pure))
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/-- Joe is another client. -/
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def runJoe (addr : UInt16 → SocketAddress) (first second : UInt16) : Async Unit := do
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let client ← UDP.Socket.mk
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client.bind (addr second)
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client.connect (addr first)
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await (client.send (String.toUTF8 "hello robert!"))
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def acceptClose (addr : UInt16 → SocketAddress) (first second : UInt16) : IO Unit := do
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let server ← UDP.Socket.mk
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server.bind (addr first)
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let res ← (runJoe addr first second).run
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res.block
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let res ← server.recv 1024
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let (msg, addr) ← res.block
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if let some addr := addr then
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assertBEq addr.port second
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assertBEq (String.fromUTF8! msg) "hello robert!"
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#eval acceptClose (SocketAddress.v4 ∘ SocketAddressV4.mk (.ofParts 127 0 0 1)) 9001 9002
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#eval acceptClose (SocketAddress.v6 ∘ SocketAddressV6.mk (.ofParts 0 0 0 0 0 0 0 1)) 9003 9004
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