Since build 2.6.8 it is possible to add custom HTTP headers while establishing Websocket connection to WCS server. To do this, use the following function
FPWCSApi2Session connectWithHeaders:(NSDictionary<NSString *, NSString *> *) headers
Suppose that Websocket traffic proxying with user authentication is configured on the server using nginx. In this case, user credentials should be passed in Websocket URL
wss://login:password@test.flashphoner.com/wss
In this case, Authorization HTTP header should be formed from Websocket URL and should be sent while connecting to the server as follows:
NSURL* nsURL = [NSURL URLWithString:_urlInput.text];
if (nsURL.user && nsURL.password) {
NSString* auth = [NSString stringWithFormat:@"%@:%@", nsURL.user, nsURL.password];
NSData *authData = [auth dataUsingEncoding:NSUTF8StringEncoding];
NSString *authBase64 = [NSString stringWithFormat:@"Basic %@", [authData base64EncodedStringWithOptions:kNilOptions]];
NSDictionary *headers = [[NSDictionary alloc] initWithObjectsAndKeys: authBase64, @"Authorization", nil];
[_session connectWithHeaders: headers];
} else {
[_session connect];
}