410 lines
20 KiB
JavaScript
410 lines
20 KiB
JavaScript
/* 独立主站字节测试：启动示例自己的Windows Net后端，仅连接127.0.0.1随机端口。
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* Node内置模块即可运行，不安装包、不复用待测ASDU编码器，不更改系统时钟。
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*/
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'use strict';
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const assert = require('node:assert/strict');
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const net = require('node:net');
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const { spawn, spawnSync } = require('node:child_process');
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const { once } = require('node:events');
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const { setTimeout: delay } = require('node:timers/promises');
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const executable = process.argv[2];
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if (!executable) throw new Error('Usage: node slave_example_loopback_test.cjs <example.exe>');
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class Master {
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constructor(socket) {
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this.socket = socket;
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this.buffer = Buffer.alloc(0);
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this.frames = [];
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this.waiters = [];
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this.ns = this.nr = 0;
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socket.on('data', data => {
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this.buffer = Buffer.concat([this.buffer, data]);
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try {
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while (this.buffer.length >= 2) {
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assert.equal(this.buffer[0], 0x68);
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assert(this.buffer[1] >= 4 && this.buffer[1] <= 253);
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const length = this.buffer[1] + 2;
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if (this.buffer.length < length) break;
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const frame = this.buffer.subarray(0, length);
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this.buffer = this.buffer.subarray(length);
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const waiter = this.waiters.shift();
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if (waiter) { clearTimeout(waiter.timer); waiter.resolve(frame); }
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else this.frames.push(frame);
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}
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} catch (error) { this.fail(error); socket.destroy(); }
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});
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socket.on('error', error => this.fail(error));
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socket.on('close', () => this.fail(new Error('Connection closed')));
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}
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fail(error) {
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this.error = error;
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for (const waiter of this.waiters.splice(0)) {
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clearTimeout(waiter.timer);
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waiter.reject(error);
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}
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}
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next() {
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if (this.frames.length) return Promise.resolve(this.frames.shift());
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if (this.error) return Promise.reject(this.error);
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return new Promise((resolve, reject) => {
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const waiter = { resolve, reject };
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waiter.timer = setTimeout(() => {
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this.waiters.splice(this.waiters.indexOf(waiter), 1);
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reject(new Error('Timed out waiting for an APDU'));
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}, 1500);
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this.waiters.push(waiter);
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});
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}
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async control(code, expected) {
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this.socket.write(Buffer.from([0x68, 4, code, 0, 0, 0]));
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for (let i = 0; i < 8; i++) {
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const frame = await this.next();
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if (frame[2] === 1) continue; // 主站I帧的S确认允许穿插。
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assert.deepEqual([...frame], [0x68, 4, expected, 0, 0, 0]);
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return;
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}
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throw new Error('Missing U-frame confirmation');
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}
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frame(payload) {
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const frame = Buffer.alloc(payload.length + 6);
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frame[0] = 0x68;
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frame[1] = payload.length + 4;
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frame.writeUInt16LE(this.ns++ << 1, 2);
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frame.writeUInt16LE(this.nr << 1, 4);
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Buffer.from(payload).copy(frame, 6);
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return frame;
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}
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async send(payload, fragmented = false) {
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const frame = this.frame(payload);
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if (fragmented) {
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this.socket.write(frame.subarray(0, 3));
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await delay(10);
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this.socket.write(frame.subarray(3));
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} else this.socket.write(frame);
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}
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async readASDU() {
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for (let i = 0; i < 8; i++) {
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const frame = await this.next();
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if (frame[2] === 1) continue;
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assert.equal(frame[2] & 1, 0);
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assert.equal(frame.readUInt16LE(2) >> 1, this.nr++);
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assert.equal(frame.readUInt16LE(4) >> 1, this.ns);
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const ack = Buffer.from([0x68, 4, 1, 0, 0, 0]);
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ack.writeUInt16LE(this.nr << 1, 4);
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this.socket.write(ack); // k=1，每帧ACK后服务才可继续发下一帧。
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return frame.subarray(6);
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}
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throw new Error('Missing I frame');
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}
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async close() {
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const closed = once(this.socket, 'close');
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this.socket.end();
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await closed;
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}
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}
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const signals = [0, 1, 0, 1, 1, 0, 1, 0];
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const doubleSignals = Array(8).fill(1);
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const measures = [2300, 2310, 2290, 5000, -125, 0, 1234, 42];
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const request = (oa, qoi = 20, ca = 7) => [100, 1, 0x86, oa, ca & 0xff, ca >> 8, 0, 0, 0, qoi];
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// 构造单对象45/46命令原文：CA/IOA按小端编码，QU固定为1（短脉冲）。
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// type/oa/ioa/state来自用例，select决定S/E；cot/ca默认激活原因6和示例站点7。
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// 返回普通字节数组，也用于故意构造不支持类型的兜底请求，不在此执行业务校验。
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const commandRequest = (type, oa, ioa, state, select, cot = 6, ca = 7) =>
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[type, 1, cot, oa, ca & 0xff, ca >> 8, ioa & 0xff, (ioa >> 8) & 0xff, ioa >> 16,
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state | 4 | (select ? 0x80 : 0)];
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// 发送payload并断言紧随其后的应答；除COT/P/N外须回显原请求，TEST位也须保留。
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// master负责链路收发及确认，cot/negative描述预期应答；Promise完成表示该帧已核对。
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async function commandReply(master, payload, cot, negative = false) {
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await master.send(payload);
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const expected = [...payload]; expected[2] = (payload[2] & 0x80) | cot | (negative ? 0x40 : 0);
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assert.deepEqual([...(await master.readASDU())], expected);
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}
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// 验证一次选择后执行的真实TCP全流程；monitorIoa为该命令对应的监视方向地址。
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// 顺序逐帧读取：选择ACT_CON、执行ACT_CON、COT=11返回信息、执行原文ACT_TERM。
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// 链路窗口k=1，只有前一帧处理完才能推进下一帧，可暴露返回信息/终止抢先的问题。
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async function commandExecute(master, type, oa, ioa, state, monitorIoa) {
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await commandReply(master, commandRequest(type, oa, ioa, state, true), 7);
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const execute = commandRequest(type, oa, ioa, state, false);
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await commandReply(master, execute, 7);
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assert.deepEqual([...(await master.readASDU())],
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[type === 45 ? 1 : 3, 1, 11, oa, 7, 0, monitorIoa & 0xff, (monitorIoa >> 8) & 0xff, 0, state]);
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const terminated = [...execute]; terminated[2] = 10;
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assert.deepEqual([...(await master.readASDU())], terminated);
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}
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const initialCounters = [120000, 345600, 7890, 0, 1, 65535, 2147483647, 42];
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const counterRequest = (oa, qcc = 5, cot = 6, test = false, ca = 7) =>
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[101, 1, cot | (test ? 0x80 : 0), oa, ca & 0xff, ca >> 8, 0, 0, 0, qcc];
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const clockRequest = (oa, cot = 6, test = false, ca = 7) =>
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[103, 1, cot | (test ? 0x80 : 0), oa, ca & 0xff, ca >> 8, 0, 0, 0, 0x39, 0x30, 34, 12, 28, 10, 26];
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let counterSubmitted = 0, counterCompleted = 0;
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async function readCounters(master, oa, qcc = 5, values = initialCounters, sequence = 0) {
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const group = qcc & 0x3f;
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const first = group === 2 ? 4 : 0, end = group === 1 ? 4 : 8;
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const count = 2 + (end - first) / 4;
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for (let frame = 0; frame < count; frame++) {
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const asdu = await master.readASDU();
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if (frame === 0 || frame === count - 1) {
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assert.deepEqual([...asdu], counterRequest(oa, qcc, frame === 0 ? 7 : 10));
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} else {
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assert.equal(asdu.length, 38);
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assert.deepEqual([...asdu.subarray(0, 6)], [15, 4, group === 5 ? 37 : 37 + group, oa, 7, 0]);
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for (let point = 0; point < 4; point++) {
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const offset = 6 + 8 * point, index = first + 4 * (frame - 1) + point;
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assert.equal(asdu.readUIntLE(offset, 3), 3001 + index);
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assert.equal(asdu.readInt32LE(offset + 3), values[index]);
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assert.equal(asdu[offset + 7], sequence);
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}
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}
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}
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counterSubmitted += count;
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counterCompleted++;
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}
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async function counterRead(master, oa, qcc = 5, values = initialCounters, sequence = 0, ca = 7) {
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await master.send(counterRequest(oa, qcc, 6, false, ca));
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await readCounters(master, oa, qcc, values, sequence);
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}
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async function counterReply(master, payload, cot, negative = false) {
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await master.send(payload);
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const expected = [...payload]; expected[2] = (payload[2] & 0x80) | cot | (negative ? 0x40 : 0);
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assert.deepEqual([...(await master.readASDU())], expected);
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counterSubmitted++;
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if (!negative) counterCompleted++;
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}
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async function totalCall(master, oa, fragmented = false, qoi = 20, ca = 7) {
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await master.send(request(oa, qoi, ca), fragmented);
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await readTotalCall(master, oa, qoi);
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}
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async function readTotalCall(master, oa, qoi = 20, busyRequests = []) {
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const original = request(oa, qoi);
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// 站总召依次返回单点、双点、遥测；遥信分组含前两类，遥测分组只含最后一类。
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// 每类8点、每帧4点，首尾另有ACT_CON与ACT_TERM。
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const types = qoi === 20 ? [1, 3, 11] : qoi === 21 ? [1, 3] : [11];
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const count = 2 + types.length * 2;
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const busyReplies = busyRequests.map(payload => {
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const expected = [...payload]; expected[2] = 0xc7;
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if (expected[4] === 0xff && expected[5] === 0xff) { expected[4] = 7; expected[5] = 0; }
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return Buffer.from(expected);
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});
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for (let f = 0; f < count || busyReplies.length;) {
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const asdu = await master.readASDU();
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if ((asdu[2] & 0x40) !== 0) {
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const index = busyReplies.findIndex(expected => expected.equals(asdu));
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assert(index >= 0, `Unexpected negative reply: ${asdu.toString('hex')}`);
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busyReplies.splice(index, 1);
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continue;
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}
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assert(f < count, 'Unexpected response after ACT_TERM');
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if (f === 0 || f === count - 1) {
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const expected = [...original];
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expected[2] = f === 0 ? 0x87 : 0x8a;
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assert.deepEqual([...asdu], expected);
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} else {
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const type = types[Math.floor((f - 1) / 2)];
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const digital = type !== 11;
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const values = type === 1 ? signals : type === 3 ? doubleSignals : measures;
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const baseIoa = type === 1 ? 1001 : type === 3 ? 1101 : 2001;
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const width = digital ? 4 : 6;
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const first = ((f - 1) % 2) * 4;
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assert.equal(asdu.length, 6 + width * 4);
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assert.deepEqual([...asdu.subarray(0, 6)], [type, 4, 0x80 | qoi, oa, 7, 0]);
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for (let p = 0; p < 4; p++) {
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const offset = 6 + p * width;
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assert.equal(asdu.readUIntLE(offset, 3), baseIoa + first + p);
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if (digital) assert.equal(asdu[offset + 3], values[first + p]);
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else {
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assert.equal(asdu.readInt16LE(offset + 3), values[first + p]);
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assert.equal(asdu[offset + 5], 0);
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}
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}
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}
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f++;
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}
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}
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async function main() {
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const help = spawnSync(executable, ['--help'], { windowsHide: true, encoding: 'utf8' });
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assert.ifError(help.error);
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assert.equal(help.status, 0, help.stderr);
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assert(help.stdout.includes('--run-ms'));
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assert(help.stdout.includes('--clock simulated|system'));
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assert(help.stdout.includes('Type45 IOA6001..6008'));
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assert(help.stdout.includes('Type46 IOA6101..6108'));
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const invalid = spawnSync(executable, ['--ca', '0'], { windowsHide: true, encoding: 'utf8' });
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assert.ifError(invalid.error);
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assert.equal(invalid.status, 1);
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const invalidClock = spawnSync(executable, ['--clock', 'invalid'], { windowsHide: true, encoding: 'utf8' });
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assert.ifError(invalidClock.error);
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assert.equal(invalidClock.status, 1);
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const child = spawn(executable, ['--port', '0', '--ca', '7', '--window', '1', '--run-ms', '12000'],
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{ windowsHide: true, stdio: ['ignore', 'pipe', 'pipe'] });
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let output = '', errors = '';
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const sockets = [];
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child.stdout.on('data', data => { output += data.toString(); });
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child.stderr.on('data', data => { errors += data.toString(); });
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const exit = once(child, 'exit');
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const deadline = setTimeout(() => { child.kill(); }, 20000);
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try {
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const port = await new Promise((resolve, reject) => {
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const timer = setTimeout(() => reject(new Error(`No listening port: ${output} ${errors}`)), 2000);
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child.once('error', error => { clearTimeout(timer); reject(error); });
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child.stdout.on('data', () => {
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const match = output.match(/LISTEN 127\.0\.0\.1:(\d+) CA=7/);
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if (match) { clearTimeout(timer); resolve(Number(match[1])); }
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});
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});
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async function connect() {
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const socket = net.connect({ host: '127.0.0.1', port });
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sockets.push(socket);
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const master = new Master(socket);
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await once(socket, 'connect');
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await master.control(7, 0x0b);
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return master;
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}
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const master = await connect();
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// 一次write内的106延时获得和102读取逐条回显，k=1时第二条由HIGH等待首条ACK。
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const unsupportedBatch = [
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[106, 1, 0x86, 0x18, 7, 0, 0, 0, 0, 0x39, 0x30],
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[102, 1, 5, 0x19, 7, 0, 0xe9, 3, 0]
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];
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master.socket.write(Buffer.concat(unsupportedBatch.map(payload => master.frame(payload))));
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for (const payload of unsupportedBatch) {
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const expected = [...payload]; expected[2] = (payload[2] & 0x80) | 0x40 | 44;
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assert.deepEqual([...(await master.readASDU())], expected);
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}
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// 默认模拟时钟：成功、TEST拒绝、错误COT及广播实际CA确认都保持请求时标原文。
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for (const [payload, cot, negative] of [
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[clockRequest(0x10), 7, false],
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[clockRequest(0x11, 6, true), 7, true],
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[clockRequest(0x12, 5), 45, true],
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[clockRequest(0x13, 6, false, 65535), 7, false]
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]) {
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await master.send(payload);
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const expected = [...payload];
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expected[2] = (payload[2] & 0x80) | cot | (negative ? 0x40 : 0);
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expected[4] = 7; expected[5] = 0;
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assert.deepEqual([...(await master.readASDU())], expected);
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}
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// 同批103先保存执行任务，102当场兜底；Try确认必须等已提交的44之后发送。
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const clockBatch = clockRequest(0x14);
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const readBatch = [102, 1, 5, 0x15, 7, 0, 0xe9, 3, 0];
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master.socket.write(Buffer.concat([master.frame(clockBatch), master.frame(readBatch)]));
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const readRejected = [...readBatch]; readRejected[2] = 0x40 | 44;
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assert.deepEqual([...(await master.readASDU())], readRejected);
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const clockConfirmed = [...clockBatch]; clockConfirmed[2] = 7;
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assert.deepEqual([...(await master.readASDU())], clockConfirmed);
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// 遥控默认先选择；k=1验证确认、返回信息和终止逐帧交接，后续总召必须读到新值。
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await commandExecute(master, 45, 0x71, 6001, 1, 1001);
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// 同步后续总召的预期值，验证遥控修改的是示例应用点表而非仅构造一次返回帧。
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signals[0] = 1;
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await commandExecute(master, 46, 0x72, 6103, 2, 1103);
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// 站总召和遥信分组均须读回双点1103的新位置，其余双点仍为初值1。
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doubleSignals[2] = 2;
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// 撤销故意使用不同状态值：匹配只要求类型/站点/IOA/OA，不比较命令状态。
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await commandReply(master, commandRequest(45, 0x73, 6002, 0, true), 7);
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await commandReply(master, commandRequest(45, 0x73, 6002, 1, true, 8), 9);
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// 选择已撤销，默认不允许直接执行，因此后续执行必须被否定。
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await commandReply(master, commandRequest(45, 0x73, 6002, 0, false), 7, true);
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// 公共地址错误由模块判定；遥信地址1001不是Type45命令地址，由应用点表返回47。
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await commandReply(master, commandRequest(46, 0x74, 6101, 1, true, 6, 65535), 46, true);
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await commandReply(master, commandRequest(45, 0x75, 1001, 1, true), 47, true);
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// TEST命令须原样保留TEST位并否定，不能启动模拟输出。
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const commandTest = commandRequest(45, 0x76, 6001, 0, true); commandTest[2] |= 0x80;
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await commandReply(master, commandTest, 7, true);
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// 本版仅接手45/46；47及附完整CP56字节的58须继续交给44兜底。
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await commandReply(master, commandRequest(47, 0x77, 1001, 1, false), 44, true);
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const timedCommand = commandRequest(58, 0x78, 1001, 0, true).concat([0, 0, 0, 0, 1, 1, 26]);
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await commandReply(master, timedCommand, 44, true);
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await counterRead(master, 0x20);
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await counterReply(master, counterRequest(0x21, 0x45), 7);
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await counterRead(master, 0x22, 5, initialCounters, 1);
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await counterRead(master, 0x23, 1, initialCounters, 1);
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await counterRead(master, 0x24, 2, initialCounters, 1);
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await counterReply(master, counterRequest(0x25, 3), 7, true);
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await counterReply(master, counterRequest(0x26, 4), 7, true);
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await counterReply(master, counterRequest(0x27, 5, 8), 45, true);
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// TEST requests must not freeze or clear real counters.
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await counterReply(master, counterRequest(0x28, 0x85, 6, true), 7, true);
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await counterRead(master, 0x29, 5, initialCounters, 1, 65535);
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await counterReply(master, counterRequest(0x2a, 0x85), 7);
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await counterRead(master, 0x2b, 5, initialCounters, 2);
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await counterReply(master, counterRequest(0x2c, 0x45), 7);
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const zeroCounters = initialCounters.map(() => 0);
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await counterRead(master, 0x2d, 5, zeroCounters, 3);
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await counterReply(master, counterRequest(0x2e, 0xc5), 7);
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await counterRead(master, 0x2f, 5, zeroCounters, 3);
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await totalCall(master, 0x5a, true);
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await totalCall(master, 0x5b, false, 21);
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await totalCall(master, 0x5c, false, 22);
|
||
// 广播请求的确认、数据和终止均按实际本站CA=7核对。
|
||
await totalCall(master, 0x5d, true, 20, 65535);
|
||
await totalCall(master, 0x5e, false, 21, 65535);
|
||
await totalCall(master, 0x5f, false, 22, 65535);
|
||
// 连续提交不同QOI：只执行第一个，后两个否定；结束后由主站重发才执行。
|
||
const burst = [[0x31, 22, 65535], [0x32, 20, 65535], [0x33, 21, 7]];
|
||
master.socket.write(Buffer.concat(burst.map(([oa, qoi, ca]) => master.frame(request(oa, qoi, ca)))));
|
||
await readTotalCall(master, 0x31, 22, burst.slice(1).map(([oa, qoi, ca]) => request(oa, qoi, ca)));
|
||
for (const [oa, qoi] of burst.slice(1)) await totalCall(master, oa, false, qoi);
|
||
for (const [index, value, cot] of [[4, 8, 46], [9, 37, 7], [9, 36, 7], [0, 200, 44]]) {
|
||
const invalidRequest = request(0x55);
|
||
invalidRequest[index] = value;
|
||
if (index === 9) { invalidRequest[4] = invalidRequest[5] = 0xff; }
|
||
await master.send(invalidRequest);
|
||
const expected = [...invalidRequest];
|
||
expected[2] = 0xc0 | cot;
|
||
if (index === 9) { expected[4] = 7; expected[5] = 0; }
|
||
assert.deepEqual([...(await master.readASDU())], expected);
|
||
}
|
||
// 同一接收批次的激活/撤销在驱动业务前按FIFO处理；随后重复撤销应否定确认。
|
||
const activation = request(0x4a, 21, 65535);
|
||
const deactivation = request(0x4a, 21); deactivation[2] = 0x88;
|
||
master.socket.write(Buffer.concat([master.frame(activation), master.frame(deactivation)]));
|
||
const deactCon = [...deactivation]; deactCon[2] = 0x89;
|
||
assert.deepEqual([...(await master.readASDU())], deactCon);
|
||
deactivation[4] = deactivation[5] = 0xff;
|
||
await master.send(deactivation);
|
||
deactCon[2] = 0xc9;
|
||
assert.deepEqual([...(await master.readASDU())], deactCon);
|
||
await master.control(0x13, 0x23);
|
||
await master.control(7, 0x0b);
|
||
// k=1: both instances must make progress, preserving their own response order.
|
||
master.socket.write(Buffer.concat([master.frame(request(0x6b)), master.frame(counterRequest(0x60))]));
|
||
const generalFrames = [], counterFrames = [];
|
||
for (let index = 0; index < 12; index++) {
|
||
const asdu = await master.readASDU();
|
||
(asdu[0] === 101 || asdu[0] === 15 ? counterFrames : generalFrames).push(asdu);
|
||
}
|
||
assert.equal(generalFrames.length, 8);
|
||
assert.equal(counterFrames.length, 4);
|
||
await readTotalCall({ readASDU: async () => generalFrames.shift() }, 0x6b);
|
||
await readCounters({ readASDU: async () => counterFrames.shift() }, 0x60, 5, zeroCounters, 3);
|
||
await master.close();
|
||
const next = await connect();
|
||
await totalCall(next, 0x7c);
|
||
await next.close();
|
||
const [code] = await exit;
|
||
assert.equal(code, 0, `${output}\n${errors}`);
|
||
assert.match(output, /STOP submitted=83 gi_submitted=11 /);
|
||
assert.match(output, /deactivated=1 timeouts=0/);
|
||
assert.match(output, /negative_submitted=\d+ dropped_requests=0/);
|
||
assert.match(output, new RegExp(`counter_submitted=${counterSubmitted} counter_completed=${counterCompleted}`));
|
||
assert.match(output, /clock_executed=3 clock_synchronized=3 clock_submitted=5/);
|
||
// 三次选择含一次成功撤销；只有前两次启动输出并产生各一帧返回信息。
|
||
assert.match(output, /command_selected=3 command_executed=2 command_completed=2 command_submitted=\d+ command_returns=2/);
|
||
assert.equal(errors, '');
|
||
console.log('Slave example loopback: passed (real TCP, Type45/46 select/execute/return/termination, command cancel/TEST/address/unsupported types, changed single/double GI values, batched 106+102 and 103+102, simulated clock, counters, k=1, STOP/START, reconnect, cleanup)');
|
||
} finally {
|
||
clearTimeout(deadline);
|
||
for (const socket of sockets) socket.destroy();
|
||
if (child.exitCode === null) child.kill();
|
||
}
|
||
}
|
||
|
||
main().catch(error => { console.error(error); process.exitCode = 1; });
|