Nestjs

HDWalletProvider engine.stop() p = HDWalletProvider(MNEMONIC_SYSTEM, "http://ganache:8545", 0); p.engine.stop(); HDWalletProvider engine.stop() and pool export function GetHdProvider(id: number, rpcurl: string) { //return new HDWalletProvider(MNEMONIC_SYSTEM, url, id); return id==0?Provider1Pool.acquire():Provider2Pool.acquire(); } // Normal use const hdProvider0 = await GetHdProvider(0, providerUrl).then(function(client) {return client}).catch(function(err) {throw new HttpException(err.toString(), HttpStatus.BAD_REQUEST);}); const hdProvider1 = await GetHdProvider(1, providerUrl).then(function(client) {return client}).catch(function(err) {throw new HttpException(err.toString(), HttpStatus.BAD_REQUEST);}); // Normal release ReleaseHDProvider1(hdProvider1 ); // Pool code const genericPool = require("generic-pool"); const opts = { max: 10, // maximum size of the pool min: 2, // minimum size of the pool idleTimeoutMillis: 30000, log: true }; const factory0 = { // maybe different parms create: function() { return new HDWalletProvider(MNEMONIC_SYSTEM, RPCURL, 0); }, destroy: function(client) { client.engine.stop(); } }; const factory1 = { // maybe different parms create: function() { return new HDWalletProvider(MNEMONIC_SYSTEM, RPCURL, 1); }, destroy: function(client) { client.engine.stop(); } }; export function ReleaseHDProvider1(client){ Provider1Pool.release(client); console.log("Provider1Pool status: pool.size %o pool.available %o pool.pending %o", Provider1Pool.size, Provider1Pool.available, Provider1Pool.pending) } export function ReleaseHDProvider2(client){ Provider2Pool.release(client); console.log("Provider2Pool status: pool.size %o pool.available %o pool.pending %o", Provider2Pool.size, Provider2Pool.available, Provider2Pool.pending) } const Provider1Pool = genericPool.createPool(factory0, opts); const Provider2Pool = genericPool.createPool(factory1, opts);

https://gitissue.com/repos/jiayisheji/blog pass csrf https://github.com/expressjs/csurf/issues/21 main.ts import { NestFactory } from '@nestjs/core'; import { NestExpressApplication } from '@nestjs/platform-express'; import { join } from 'path' import { AppModule } from './app.module'; import * as cookieSession from 'cookie-session'; import * as helmet from 'helmet'; import * as cookieParser from 'cookie-parser'; import * as csurf from 'csurf'; import * as rateLimit from 'express-rate-limit'; async function bootstrap() { const app = await NestFactory.create( AppModule, ); app.init() app.useStaticAssets(join(__dirname, '..', 'public')); app.setBaseViewsDir(join(__dirname, '..', 'views')); app.setViewEngine('pug'); app.set('trust proxy', 1); app.use(cookieSession({ name: 'session', keys: ['key1', 'key2'] })); //app.enableCors(); app.use(helmet()); app.use(cookieParser()); //app.use(csurf({ cookie: true })); //正常是這行，但有些API POST時需要略過csrf app.use(function (req, res, next) { var mw = csurf({ cookie: true }); // console.log(req.url) // check real get url if (req.url === '/testpostcsrf') return next(); //pass csrf check mw(req, res, next); }); app.use( rateLimit({ windowMs: 15 * 60 * 1000, // 15 minutes max: 100, // limit each IP to 100 requests per windowMs }), ); await app.listen(3000); } bootstrap(); layout.pug doctype html html head title= title meta(content= csrfToken, name='csrf-token') body block content login.pug extends layout block content h1 Please log in if error p. #{error} form(action="/login",method="POST") input(type="hidden",name="_csrf",value=csrfToken) input(type="hidden",name="challenge",value=challenge) table(style="") tr td input(type="email",id="email",name="email",placeholder="email@foobar.com") td. (Example: "foo@bar.com") tr td input(type="password",id="password",name="password") td. (Example: "foobar") input(type="checkbox",id="remember",name="remember",value="1") label(for="remember") Remember me br input(type="submit",id="accept",value="Log in")

https://gitissue.com/repos/jiayisheji/blog 這網站中的 让我们用Nestjs来重写一个CNode(上、中、下) 幫了大忙，減少大量的浪費時間 =========== html -> jade/pug http://html2jade.aaron-powell.com/ when you html meta want to become jade/pug layout.pug meta(content= csrfToken, name='csrf-token')

What this Error？ Example： transaction A get nonce 1 transaction B get nonce 2 transaction C get nonce 3 But blockchain package B、C first, then package A. If happen this step, get error. With truffle？ Because Normal const wallet = new HDWalletProvider(mnemonic, url, id); const AContract = new TruffleContract(Json_contract); AContract.setProvider(wallet); wallet.addresses[] AContract. use contract api Sometime you call contract “set/write” api two times. Example： Create contract first. Write data into contract second. This two step are in one function. This mean is you call two time “new HDWalletProvide”.　Usually you think “New“ two time is ok, get “new” instance. But ...

import module providers service So if you want use some controllers(this controllers is in some module), this time need to import module. ???? =========== https://github.com/zelazna/NestAPI/tree/master/src Impotant： constructor don’t use new(). Use this.usersService. src/auth/auth.service.ts import { Component } from '@nestjs/common'; import { UsersService } from '../users'; @Component() ?? Injectable export class AuthService { constructor( private readonly usersService: UsersService, ) { } async validateUser(signedUser): Promise { const { email, password } = signedUser; const user = await this.usersService.findOneByEmail(email); return await EncryptorService.validate(password, user.password); } Impotant： exports need UsersService ...