我正在为Android实施 nv-websocket-client 。我在Log中遇到错误。如何成功连接？
com.neovisionaries.ws.client.WebSocketException: The status line of the opening handshake response is empty.
09-18 15:37:59.532 14225-14248/info.androidhive.firebasenotifications W/System.err: at com.neovisionaries.ws.client.HandshakeReader.readStatusLine(HandshakeReader.java:99)
09-18 15:37:59.532 14225-14248/info.androidhive.firebasenotifications W/System.err: at com.neovisionaries.ws.client.HandshakeReader.readHandshake(HandshakeReader.java:48)
09-18 15:37:59.532 14225-14248/info.androidhive.firebasenotifications W/System.err: at com.neovisionaries.ws.client.WebSocket.readHandshake(WebSocket.java:3244)
09-18 15:37:59.532 14225-14248/info.androidhive.firebasenotifications W/System.err: at com.neovisionaries.ws.client.WebSocket.shakeHands(WebSocket.java:3123)
09-18 15:37:59.532 14225-14248/info.androidhive.firebasenotifications W/System.err: at com.neovisionaries.ws.client.WebSocket.connect(WebSocket.java:2155)
我的服务器端代码在Socket.js中。有什么我想念的吗？
var app = require('express')();
var http = require('http').Server(app);
var io = require('socket.io')(http);
io.on('connection', function(socket){
console.log('client connected');
let jsonObject = {
name: 'shihab',
age : 28
};
io.emit('test-event', jsonObject);
console.log(jsonObject);
});
http.listen(3000, function(){
console.log('listenting on port 3000');
});
＆安培;我正在我的Activity中实现这个。
@Override
protected void onResume() {
super.onResume();
// CommonTasks.handleSocket();
initSocket();
}
private void initSocket() {
try {
// Connect to the server and perform an opening handshake.
// This method blocks until the opening handshake is finished.
WebSocketFactory webSocketFactory = new WebSocketFactory();
ws = webSocketFactory.setConnectionTimeout(5000).
createSocket(SOCKET_URL, 5000);
ws.addListener(new WebSocketAdapter() {
@Override
public void onStateChanged(WebSocket websocket, WebSocketState newState) throws Exception {
}
@Override
public void onConnected(WebSocket websocket, Map<String, List<String>> headers) throws Exception {
Log.e("onConnected", "onConnected");
}
@Override
public void onConnectError(WebSocket websocket, WebSocketException cause) throws Exception {
Log.e("onConnectError", "onConnectError");
}
@Override
public void onDisconnected(WebSocket websocket, WebSocketFrame serverCloseFrame, WebSocketFrame clientCloseFrame, boolean closedByServer) throws Exception {
Log.e("onDisconnected", "onDisconnected");
}
@Override
public void onTextMessage(WebSocket websocket, String text) throws Exception {
}
@Override
public void onError(WebSocket websocket, WebSocketException cause) throws Exception {
}
@Override
public void onMessageError(WebSocket websocket, WebSocketException cause, List<WebSocketFrame> frames) throws Exception {
}
});
new SocketTask().execute("");
Log.e("called", "called");
} catch (IOException e) {
}
}
class SocketTask extends AsyncTask<String, Void, String> {
@Override
protected String doInBackground(String... params) {
try {
ws.connect();
} catch (OpeningHandshakeException e) {
// Get the status code.
int statusCode = e.getStatusLine().getStatusCode();
Log.e("OpeningHandshakeExcep", "Status code..." + statusCode);
// If the status code is in the range of 300 to 399.
if (300 <= statusCode && statusCode <= 399) {
// Location header should hold the redirection URL.
String location = e.getHeaders().get("Location").get(0);
}
} catch (HostnameUnverifiedException e) {
e.printStackTrace();
// The certificate of the peer does not match the expected hostname.
} catch (WebSocketException e) {
e.printStackTrace();
// Failed to establish a WebSocket connection.
} catch (Exception e6) {
showLog(CommonConstraints.SOCKET_TAG, e6.getMessage());
Application.getInstance().trackException(e6);
}
return null;
}
@Override
protected void onPostExecute(String result) {
}
}
有人这样做吗？可以帮我解决这个问题。