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* as net from \"net\"\nimport { JsonRpc, Transport } from \"./rpc\"\nconst debug = require(\"debug\")(\"rpc\")\n\nexport function connect(port: number = 63342, domains: { [domainName:string]: { [methodName:string]:Function; }; } = null): JsonRpc {\n const transport = new SocketTransport()\n const server = new JsonRpc(transport, domains)\n transport.connect(port)\n return server\n}\n\nexport class SocketTransport implements Transport {\n opened: () => void\n messageReceived: (message: Array<any>) => void\n\n constructor(private socket: net.Socket = new net.Socket()) {\n }\n\n connect(port: number = 63342) {\n this.socket.connect(port, null, ()=> {\n debug(\"Connected to %s\", port)\n const opened = this.opened\n if (opened != null) {\n opened()\n }\n })\n this.socket.on(\"error\", (e: Error) => {\n console.error(e)\n })\n\n const messageReceived = this.messageReceived\n if (messageReceived == null) {\n console.warn(\"messageReceived is not specified, input will be ignored\")\n }\n else {\n const messageDecoder = new MessageDecoder(messageReceived)\n this.socket.on(\"data\", messageDecoder.messageReceived.bind(messageDecoder))\n }\n\n this.socket.write(new Buffer([67, 72, 105, -107, 126, -21, -81, -72, 64, 54, -87, -88, 0, -46, -48, 34, -7, -67]))\n }\n\n send(id: number, domain: string, command: string, params: any[] = null): void {\n const encodedParams = params == null || params.length === 0 ? null : JSON.stringify(params)\n const header = '[' + (id == -1 ? '' : (id + ', ')) + '\"' + domain + '\", \"' + command + '\"'\n const headerBuffer = new Buffer(4)\n headerBuffer.writeUInt32BE(header.length + (encodedParams == null ? 0 : Buffer.byteLength(encodedParams)) + 1 /* ] symbol*/, 0)\n this.socket.write(headerBuffer)\n\n debug(\"out: %s%s]\", header, encodedParams || \"\")\n\n this.socket.write(header)\n if (encodedParams != null) {\n this.socket.write(encodedParams)\n }\n this.socket.write(']')\n }\n\n sendResult(id: number, result: any): void {\n this.sendResultOrError(id, result, false)\n }\n\n sendError(id: number, error: any): void {\n this.sendResultOrError(id, error, true)\n }\n\n private sendResultOrError(id: number, result: any, isError: boolean): void {\n var encodedResult = JSON.stringify(result)\n var header = id + ', \"' + (isError ? 'e' : 'r') + '\"'\n const headerBuffer = new Buffer(4)\n headerBuffer.writeUInt32BE(Buffer.byteLength(encodedResult) + header.length, 0)\n this.socket.write(headerBuffer)\n this.socket.write(encodedResult)\n }\n}\n\nconst enum State {LENGTH, CONTENT}\n\nclass MessageDecoder {\n private state = State.LENGTH\n private contentLength = 0\n\n private buffers: Array<Buffer> = []\n private messageBuffer: Buffer\n\n private readableByteCount = 0\n\n private messageBufferOffset = 0\n\n constructor(private messageProcessor: (message: any)=>void) {\n }\n\n private concatBuffer(buffer: Buffer): Buffer {\n if (this.buffers.length === 0) {\n return buffer\n }\n\n this.buffers.push(buffer)\n let totalBuffer = Buffer.concat(this.buffers, this.readableByteCount)\n this.buffers.length = 0\n return totalBuffer\n }\n\n messageReceived(buffer: Buffer) {\n let offset = 0\n this.readableByteCount += buffer.length\n while (true) {\n //noinspection FallThroughInSwitchStatementJS\n switch (this.state) {\n case State.LENGTH: {\n if (this.readableByteCount < 4) {\n if (offset != 0) {\n buffer = buffer.slice(offset)\n }\n this.buffers.push(buffer)\n return\n }\n\n buffer = this.concatBuffer(buffer)\n this.state = State.CONTENT\n this.contentLength = buffer.readUInt32BE(offset)\n offset += 4\n\n if ((buffer.length - offset) < this.contentLength) {\n this.messageBuffer = new Buffer(this.contentLength)\n buffer.copy(this.messageBuffer, 0, offset)\n this.messageBufferOffset = 0\n this.readableByteCount = 0\n return\n }\n\n this.readableByteCount = buffer.length - offset\n }\n\n case State.CONTENT: {\n let rawMessage: string\n if (this.messageBuffer == null) {\n rawMessage = buffer.toString(\"utf8\", offset, offset + this.contentLength)\n offset += this.contentLength\n this.readableByteCount = buffer.length - offset\n }\n else {\n const requiredByteCount = this.messageBuffer.length - this.messageBufferOffset\n if (requiredByteCount > this.readableByteCount) {\n buffer.copy(this.messageBuffer, this.messageBufferOffset, offset)\n this.messageBufferOffset += this.readableByteCount\n this.readableByteCount = 0\n return\n }\n else {\n const newOffset = offset + requiredByteCount\n buffer.copy(this.messageBuffer, this.messageBufferOffset, offset, newOffset)\n offset = newOffset\n this.readableByteCount = buffer.length - offset\n rawMessage = this.messageBuffer.toString(\"utf8\")\n }\n }\n\n debug(\"in: %s\", rawMessage)\n try {\n this.state = State.LENGTH\n this.contentLength = 0\n\n this.messageProcessor(JSON.parse(rawMessage))\n }\n catch (e) {\n console.error(\"Error: %s,\\nInput: %s\", e, rawMessage)\n }\n }\n }\n }\n }\n}"]} |