我正在使用 esp8266 来运行我的 websocket 服务器和 angular 7 来运行 socket.io 来运行 websocket 客户端。当我运行角度应用程序时。Arduino 中的日志显示已断开连接!。我不确定是什么原因造成的。
以下是客户端的角度代码。
import * as io from 'socket.io-client';
import { Observable } from 'rxjs/Observable';
import * as Rx from 'rxjs/Rx';
import { environment } from 'src/environments/environment';
@Injectable()
export class SocketServiceService {
private socket;
constructor() { }
connect(): Rx.Subject<MessageEvent> {
this.socket = io('ws://192.168.43.155:81');
console.log("created server")
let observable = new Observable(observer => {
this.socket.on('message', (data) => {
console.log("Received message from Websocket Server")
observer.next(data);
})
return () => {
this.socket.disconnect();
}
});
let observer = {
next: (data: Object) => {
this.socket.emit('message', JSON.stringify(data));
console.log("msg emited"+ data);
},
};
return Rx.Subject.create(observer, observable);
}
}
这是 esp8266 代码
#include <Arduino.h>
#include <ESP8266WiFi.h>
#include <ESP8266WiFiMulti.h>
#include <WebSocketsServer.h>
#include <Hash.h>
ESP8266WiFiMulti WiFiMulti;
WebSocketsServer webSocket = WebSocketsServer(81);
#define USE_SERIAL Serial1
void webSocketEvent(uint8_t num, WStype_t type, uint8_t * payload, size_t length) {
switch(type) {
case WStype_DISCONNECTED:
USE_SERIAL.printf("[%u] Disconnected!\n", num);
break;
case WStype_CONNECTED:
{
IPAddress ip = webSocket.remoteIP(num);
USE_SERIAL.printf("[%u] Connected from %d.%d.%d.%d url: %s\n", num, ip[0], ip[1], ip[2], ip[3], payload);
webSocket.sendTXT(num, "Connected");
}
break;
case WStype_TEXT:
USE_SERIAL.printf("[%u] get Text: %s\n", num, payload);
break;
case WStype_BIN:
USE_SERIAL.printf("[%u] get binary length: %u\n", num, length);
hexdump(payload, length);
break;
}
}
void setup() {
USE_SERIAL.begin(115200);
USE_SERIAL.setDebugOutput(true);
USE_SERIAL.println();
USE_SERIAL.println();
USE_SERIAL.println();
for(uint8_t t = 4; t > 0; t--) {
USE_SERIAL.printf("[SETUP] BOOT WAIT %d...\n", t);
USE_SERIAL.flush();
delay(1000);
}
WiFiMulti.addAP("SSID", "passpasspass");
while(WiFiMulti.run() != WL_CONNECTED) {
delay(100);
}
webSocket.begin();
webSocket.onEvent(webSocketEvent);
}
void loop() {
webSocket.loop();
}
请提出可能出现的问题,任何指示都会有所帮助。