I am trying to run my signalR application but i am getting the following error : "
WebSocket connection to
'ws://localhost:60377/signalr/connect?transport=webSockets&clientProtocol=2.1&connectionToken=f8tOcpqdXVZ245%2BvWKsSFHaGfl6GePMtKf0Jk9wSIJQxsa5KnEiZFyGoFgYuwbQ%2FirsDjiX%2FHtVRJAvhvmOtrvYJpaZD21GHiyyqBw785nI2TICxJ4P33puQnEnjGSlMpmMBxtNk02XxkTJpZxvClw%3D%3D&connectionData=%5B%7B%22name%22%3A%22geologuehub%22%7D%5D&tid=4'
failed: Error during WebSocket handshake: Unexpected response code:
500"
I would appreciate any help to fix this problem.
Adding the a list of fall-back transports on the javascript fixed the problem. it is weird because i am using googleChrome (Version 77.0.3865.90) and the web socket is not supported!!
$.connection.hub.start({ transport: ['serverSentEvents', 'longPolling'] }).done(function ()
{
console.log(`SignalR connection transport used is "${$.connection.hub.transport.name}"`);
});
This can happen when:
Your hub is not an public class.
Your server can't instantiate the hub.
You'r making an https connection when your server runs on http and vice-versa.
Related
Trying to connect to an external datahub from a SSMS on a server. From desktop computer works.
Port 1433 allowed on server. Has anyone seen this or have a solution? Thank you.
Error:
Test connection failed because of an error in initializing provider. Client unable to establish connection due to prelogin failure
TCP Provider: The specified network name is no longer available.
Client unable to establish connection
Client unable to establish connection because an error was encountered during handshakes before login. Common causes include client attempting to connect to an unsupported version of SQL Server, server too busy to accept new connections or a resource limitation (memory or maximum allowed connections) on the server.
Used jhipster to create gateway. I use UAA for authorization. I didn't change any settings. Getting an error :( Maybe I need to add something else that wasn't done in the generation process?
URL: wss://**.com/websocket/tracker/883/jj2yk045/websocket
Cookie with access_token, session_token and XSRF-TOKEN.
Message: Error during WebSocket handshake: Unexpected response code: 403
The app was started with TLS disabled. This uses Nginx. After TLS enabled work fine.
I am trying to connect to server for web socket connection. but I am getting the error:
"Websocket is disconnected: Optional(Starscream.WSError(type:
Starscream.ErrorType.writeTimeoutError, message: \"Timed out waiting
for the socket to be ready for a write\", code: 0))"
Starscream.WSError(type: Starscream.ErrorType.writeTimeoutError
How can I solve it? also
Here is my source code link:
https://www.dropbox.com/s/v348vxxjf74dsds/websocket.zip?dl=0
I tried to connect after some time again too, Once its failed but still it's giving me same error.
I tried your code, it's working fine. the only change I have made is your socket server URL
before it was ws://192.168.1.2:8080
and I have updated with "http://192.168.1.41:8080" //41 is my IP. you can use yours
just changed ws with http.
i am using j-meter for load test of a server accessing REST api using POST Https. and it is returning following errors.
Response code: Non HTTP response code: java.net.SocketException
Response message: Non HTTP response message: Connection reset
or
Response code: Non HTTP response code: java.net.SocketException
Response message: Non HTTP response message: Unrecognized Windows Sockets error: 0: recv failed
or
Response code: Non HTTP response code: java.net.ConnectException
Response message: Non HTTP response message: Connection timed out: connect
though load test is successful with http call.
can any one help me to tell the exact issue? whether it is server side issue or client side?
how to fix this?
It might an issue with IPv6 stack, try forcing JVM to use IPv4 addresses by adding the next line to system.properties file (located in "bin" folder of your JMeter installation)
java.net.preferIPv4Stack=true
alternatively you can pass the above property via -D command-line argument like:
jmeter -Djava.net.preferIPv4Stack=true -n -t test.jmx -l result.jtl
More information:
Java Networking Properties
JMeter Properties Reference
Apache JMeter Properties Customization Guide
Overriding Properties Via The Command Line
It might also be a case of using port below 1024 on Windows as non-administrator user, try configuring your application server to run on port above 1024 (default port for HTTPS is 443). Also double check that port 443 (or whatever) is not being used by anything else (for example Skype likes to bind to port and 443)
Issue is resolved by changing the SSL configuration in jmeter.properties file.
it was due to the mismatch of handshaking protocol at server and client side.
jmeter was set with all SSL flavors to handshake with server.
its the trick.
I got this error upon trying to connect nusoap api for sugarcrm 6.4.3
wsdl error: Getting http://url:8080/soap.php?wsdl - HTTP ERROR:
Couldn't open socket, connection to server http://url:8080/soap.php?wsdl, Error (111): Connection refused
so is there settings I need to do to open the socket for successful connection ?
Thanks in advance.