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56 lines
1.6 KiB
Nim
56 lines
1.6 KiB
Nim
import ../client, chronos, tables, json
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const newsUseChronos = true
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include news
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type
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RpcWebSocketClient* = ref object of RpcClient
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transport*: WebSocket
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uri*: string
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loop*: Future[void]
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proc newRpcWebSocketClient*: RpcWebSocketClient =
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## Creates a new client instance.
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new result
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result.initRpcClient()
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method call*(self: RpcWebSocketClient, name: string,
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params: JsonNode): Future[Response] {.async.} =
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## Remotely calls the specified RPC method.
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let id = self.getNextId()
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var value = $rpcCallNode(name, params, id) & "\c\l"
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if self.transport.isNil:
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raise newException(ValueError,
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"Transport is not initialised (missing a call to connect?)")
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# echo "Sent msg: ", value
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# completed by processMessage.
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var newFut = newFuture[Response]()
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# add to awaiting responses
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self.awaiting[id] = newFut
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await self.transport.send(value)
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result = await newFut
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proc processData(client: RpcWebSocketClient) {.async.} =
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while true:
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while true:
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var value = await client.transport.receivePacket()
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if value == "":
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# transmission ends
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client.transport.close()
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break
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client.processMessage(value)
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# async loop reconnection and waiting
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client.transport = await newWebSocket(client.uri)
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proc connect*(client: RpcWebSocketClient, uri: string) {.async.} =
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client.transport = await newWebSocket(uri)
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client.uri = uri
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client.loop = processData(client)
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method close*(client: RpcWebSocketClient) {.async.} =
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# TODO: Stop the processData loop
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client.transport.close()
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