连接到以太坊节点时出现错误
---------------------------------- web3连接代码如下----------- ------------------------------------
import 'package:flutter/material.dart';
import 'package:http/http.dart';
import 'package:web3dart/web3dart.dart';
import 'dart:async';
const String rpcUrls = 'https://node1.bitcoiin.com';
class HomeScreen extends StatefulWidget {
@override
State<StatefulWidget> createState() {
return _HomeScreenState();
}
}
class _HomeScreenState extends State<HomeScreen> {
@override
void initState() {
main();
super.initState();
}
main(){
var ethClient = new Web3Client(apiUrls, new Client());
print(ethClient.getBlockNumber());
}
最佳答案
我仍然不知道为什么该解决方案有效,但是我遇到了同样的问题,我尝试用服务器的IP地址替换localhost
(例如192.168.1.33
)。有效!。
为您的应用尝试以下代码:
main(){
var httpClient = new Client();
// You tried the code below and it didn't work
// var ethClient = new Web3Client('http://localhost:8545', httpClient);
// Try this code instead. (Replace "192.168.1.33" with the IP of your server)
var ethClient = new Web3Client('http://192.168.1.33:8545', httpClient);
print(ethClient.getBlockNumber());
}
关于dart - Flutter-SocketException:连接失败(操作系统错误:网络无法访问,errno = 101),我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/55400121/