public ServiceOptionsBuilder requestTimeoutMillis(long requestTimeoutMillis) {
        checkArgument(requestTimeoutMillis >= 0, "requestTimeoutMillis: %s (expected: >= 0)",
                      requestTimeoutMillis);
        this.requestTimeoutMillis = requestTimeoutMillis;
        return this;
    }
Returns the server-side timeout of a request in milliseconds.
core/src/main/java/com/linecorp/armeria/server/ServiceOptionsBuilder.java