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    NSURL *url = [NSURL URLWithString:@"ws://localhost:8080/api/v0/_sync"];

    NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:url];

    NSString *u = @"ewogICAgImlzX2FkbWluIjogZmFsc2UsIAogICAgInVzZXJfaWQiOiAzMTAwNTIwMTg3LCAKICAgICJlbWFpbCI6ICJub25fYWRtaW5AaG9vcGxhLm5vIiwgCiAgICAiZGF0YSI6IG51bGwsIAogICAgIm9yZ2FuaXphdGlvbnMiOiBbCiAgICAgICAgWwogICAgICAgICAgICAxOTE0NzgzNjkzLCAKICAgICAgICAgICAgIm9yZ2FuaXphdGlvbjE3NSIsIAogICAgICAgICAgICB0cnVlCiAgICAgICAgXQogICAgXQp9";

   

    NSMutableDictionary *cookieProperties = [NSMutableDictionary dictionary];

    [cookieProperties setObject:@"u" forKey:NSHTTPCookieName];

    [cookieProperties setObject:u forKey:NSHTTPCookieValue];

    [cookieProperties setObject:@"localhost" forKey:NSHTTPCookieDomain];

    [cookieProperties setObject:@"localhost" forKey:NSHTTPCookieOriginURL];

    [cookieProperties setObject:@"/" forKey:NSHTTPCookiePath];

    [cookieProperties setObject:@"0" forKey:NSHTTPCookieVersion];

    NSHTTPCookie *cookie = [NSHTTPCookie cookieWithProperties:cookieProperties];

   

    NSArray *cookies = [NSArray arrayWithObject:cookie];

    NSDictionary * headers = [NSHTTPCookie requestHeaderFieldsWithCookies:cookies];

    NSLog(@"Headers: %@", headers);

    [request setAllHTTPHeaderFields:headers];