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working nodejs TCP server and client
* not published yet, because of transitive dependency on kotlinx.nodejs, which is only on jcenter
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olme04
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Dec 13, 2021
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160 changes: 0 additions & 160 deletions
160
examples/nodejs-tcp-transport/src/jsMain/kotlin/Server.kt
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44 changes: 44 additions & 0 deletions
44
...-tcp/src/jsMain/kotlin/io/rsocket/kotlin/transport/nodejs/tcp/FrameWithLengthAssembler.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,44 @@ | ||
| package io.rsocket.kotlin.transport.nodejs.tcp | ||
|
|
||
| import io.ktor.utils.io.core.* | ||
| import io.rsocket.kotlin.frame.io.* | ||
|
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| internal fun ByteReadPacket.withLength(): ByteReadPacket = buildPacket { | ||
| @Suppress("INVISIBLE_MEMBER") writeLength(this@withLength.remaining.toInt()) | ||
| writePacket(this@withLength) | ||
| } | ||
|
|
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| internal class FrameWithLengthAssembler(private val onFrame: (frame: ByteReadPacket) -> Unit) { | ||
| private var expectedFrameLength = 0 //TODO atomic for native | ||
| private val packetBuilder: BytePacketBuilder = BytePacketBuilder() | ||
| inline fun write(write: BytePacketBuilder.() -> Unit) { | ||
| packetBuilder.write() | ||
| loop() | ||
| } | ||
|
|
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| private fun loop() { | ||
| while (true) when { | ||
| expectedFrameLength == 0 && packetBuilder.size < 3 -> return // no length | ||
| expectedFrameLength == 0 -> withTemp { // has length | ||
| expectedFrameLength = @Suppress("INVISIBLE_MEMBER") it.readLength() | ||
| if (it.remaining >= expectedFrameLength) build(it) // if has length and frame | ||
| } | ||
| packetBuilder.size < expectedFrameLength -> return // not enough bytes to read frame | ||
| else -> withTemp { build(it) } // enough bytes to read frame | ||
| } | ||
| } | ||
|
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| private fun build(from: ByteReadPacket) { | ||
| val frame = buildPacket { | ||
| writePacket(from, expectedFrameLength) | ||
| } | ||
| expectedFrameLength = 0 | ||
| onFrame(frame) | ||
| } | ||
|
|
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| private inline fun withTemp(block: (tempPacket: ByteReadPacket) -> Unit) { | ||
| val tempPacket = packetBuilder.build() | ||
| block(tempPacket) | ||
| packetBuilder.writePacket(tempPacket) | ||
| } | ||
| } |
24 changes: 24 additions & 0 deletions
24
...nodejs-tcp/src/jsMain/kotlin/io/rsocket/kotlin/transport/nodejs/tcp/TcpClientTransport.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,24 @@ | ||
| package io.rsocket.kotlin.transport.nodejs.tcp | ||
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|
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| import io.ktor.utils.io.core.internal.* | ||
| import io.ktor.utils.io.pool.* | ||
| import io.rsocket.kotlin.* | ||
| import io.rsocket.kotlin.transport.* | ||
| import kotlinx.coroutines.* | ||
| import kotlin.coroutines.* | ||
|
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| public class TcpClientTransport( | ||
| private val port: Int, | ||
| private val hostname: String, | ||
| private val pool: ObjectPool<ChunkBuffer> = ChunkBuffer.Pool, | ||
| coroutineContext: CoroutineContext = EmptyCoroutineContext | ||
| ) : ClientTransport { | ||
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|
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| override val coroutineContext: CoroutineContext = coroutineContext + SupervisorJob(coroutineContext[Job]) | ||
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| @TransportApi | ||
| override suspend fun connect(): Connection { | ||
| val socket = net.connect(port, hostname) | ||
| return TcpConnection(coroutineContext, pool, socket) | ||
| } | ||
| } |
59 changes: 59 additions & 0 deletions
59
...port-nodejs-tcp/src/jsMain/kotlin/io/rsocket/kotlin/transport/nodejs/tcp/TcpConnection.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,59 @@ | ||
| package io.rsocket.kotlin.transport.nodejs.tcp | ||
|
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| import Buffer | ||
| import io.ktor.utils.io.core.* | ||
| import io.ktor.utils.io.core.internal.* | ||
| import io.ktor.utils.io.js.* | ||
| import io.ktor.utils.io.pool.* | ||
| import io.rsocket.kotlin.* | ||
| import io.rsocket.kotlin.internal.* | ||
| import kotlinx.coroutines.* | ||
| import kotlinx.coroutines.channels.* | ||
| import net.* | ||
| import org.khronos.webgl.* | ||
| import kotlin.coroutines.* | ||
|
|
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| @TransportApi | ||
| internal class TcpConnection( | ||
| override val coroutineContext: CoroutineContext, | ||
| override val pool: ObjectPool<ChunkBuffer>, | ||
| private val socket: Socket | ||
| ) : Connection { | ||
|
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| private val sendChannel = @Suppress("INVISIBLE_MEMBER") SafeChannel<ByteReadPacket>(8) | ||
| private val receiveChannel = @Suppress("INVISIBLE_MEMBER") SafeChannel<ByteReadPacket>(Channel.UNLIMITED) | ||
|
|
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| init { | ||
| launch { | ||
| sendChannel.consumeEach { packet -> | ||
| socket.write(Uint8Array(packet.withLength().readArrayBuffer())) | ||
| } | ||
| } | ||
|
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| coroutineContext.job.invokeOnCompletion { | ||
| when (it) { | ||
| null -> socket.destroy() | ||
| else -> socket.destroy(Error(it.message, it.cause)) | ||
| } | ||
| } | ||
|
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| val frameAssembler = FrameWithLengthAssembler { receiveChannel.trySend(it) } //TODO | ||
| socket.on("data") { buffer: Buffer -> | ||
| frameAssembler.write { writeFully(buffer.buffer) } | ||
| } | ||
| socket.on("error") { error: Error -> | ||
| coroutineContext.job.cancel("Socket error", error) | ||
| } | ||
| socket.on("close") { hadError: Boolean -> | ||
| if (!hadError) coroutineContext.job.cancel("Socket closed") | ||
| } | ||
| } | ||
|
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| override suspend fun send(packet: ByteReadPacket) { | ||
| sendChannel.send(packet) | ||
| } | ||
|
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| override suspend fun receive(): ByteReadPacket { | ||
| return receiveChannel.receive() | ||
| } | ||
| } |
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