AWS-使用@connections websocket回调URL从后端（单向）发送响应-API网关websocket协议

Question

我一直在努力通过aws提供的回调URL（https：//******.execute-api.us-east-1.amazonaws.com/test/@connections）向连接的客户端发送响应。

在我的后端中具有以下代码以发送响应，这是一种单向通信。

    AwsClientBuilder.EndpointConfiguration config =
            new AwsClientBuilder.EndpointConfiguration("https://*********.execute-api.us-east-1.amazonaws.com/test", "us-east-1");
    AmazonApiGatewayManagementApi client = AmazonApiGatewayManagementApiClientBuilder.standard()
            .withEndpointConfiguration(config).build();


    PostToConnectionRequest request = new PostToConnectionRequest();
    request.withConnectionId("bGYcWek5oAMCKwA=");
    Charset charset = Charset.forName("UTF-8");
    CharsetEncoder encoder = charset.newEncoder();
    ByteBuffer buff = null;
    try {
        buff = encoder.encode(CharBuffer.wrap("Hello from lambda"));
    } catch (CharacterCodingException e) {
        log.error("Error while encoding", e);
    }
    request.withData(buff);
    PostToConnectionResult result = client.postToConnection(request);
    log.info("Result of websocket send:\n" + result);

获取服务：AmazonApiGatewayManagementApi;状态码：403；错误代码：InvalidSignatureException异常。

注意：我已完成所有设置，如证书和AWS访问密钥。

如aws文档中所述，我已经尝试了正在运行的awscurl。我能够在websocket连接的客户端上看到响应。https://docs.amazonaws.cn/en_us/apigateway/latest/developerguide/apigateway-how-to-call-websocket-api-connections.html

Answer 1

您是否找到了解决方案？完全一样的问题。