There is no response from the server. Where did I go wrong (PocketSocket)?

Question

Objective-C

Hello! I can not understand, I have a problem or something is wrong with the server?

// --- Connect to the service ---
    // create the NSURLRequest that will be sent as the handshake
    NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"url"]];
    
    // create the socket and assign delegate
    self.socket = [PSWebSocket clientSocketWithRequest:request];
    self.socket.delegate = self;

    // open socket
    [self.socket open];

#pragma mark - PSWebSocketDelegate

- (void)webSocketDidOpen:(PSWebSocket *)webSocket
{
    NSLog(@"The websocket handshake completed and is now open!");
    NSDictionary *send = @{@"данные"};
    
    [webSocket send:[NSJSONSerialization dataWithJSONObject:send
                                                    options:kNilOptions
                                                      error:nil]];
}

- (void)webSocket:(PSWebSocket *)webSocket didReceiveMessage:(id)message
{
    NSString *string = [[NSString alloc] initWithData:message
                                             encoding:NSUTF8StringEncoding];
    NSLog(@"The websocket received a message: %@", string);
}

- (void)webSocket:(PSWebSocket *)webSocket didFailWithError:(NSError *)error
{
    NSLog(@"The websocket handshake/connection failed with an error: %@", error);
}

- (void)webSocket:(PSWebSocket *)webSocket didCloseWithCode:(NSInteger)code reason:(NSString *)reason wasClean:(BOOL)wasClean
{
    NSLog(@"The websocket closed with code: %@, reason: %@, wasClean: %@", @(code), reason, (wasClean) ? @"YES" : @"NO");
}

Answer 1

uh, where's the description? Describe in detail what kind of response from the socket there is in general, what methods it enters, what it writes, etc.