public WebSocketServiceBuilder allowedOrigins(Iterable<String> allowedOrigins) {
        checkState(originPredicate == null, "allowedOrigins and originPredicate are mutually exclusive.");
        this.allowedOrigins = validateOrigins(allowedOrigins);
        return this;
    }
Sets the allowed origins. The same-origin is allowed by default.
Specify {@value ANY_ORIGIN} to allow any origins.

@see <a href="https://datatracker.ietf.org/doc/html/rfc6455#section-10.2">Origin Considerations</a>
core/src/main/java/com/linecorp/armeria/server/websocket/WebSocketServiceBuilder.java