Question

我通过AWS API Gateway和Lambda创建了一个与“ https://github.com/aws-samples/simple-websockets-chat-app”相同的API。但是API无法正常工作。尝试连接时出现错误。其消息是“与'wss：//b91xftxta9.execute-api.eu-west-1.amazonaws.com/dev'的WebSocket连接失败：WebSocket握手期间出错：意外的响应代码：500”

我的连接代码

var ws= new WebSocket("wss://b91xftxta9.execute-api.eu-west-1.amazonaws.com/dev");
ws.onopen=function(d){
	console.log(d);
}

Answer 1

尝试将 $ context.error.validationErrorString 和 $ context.integrationErrorMessage 添加到该阶段的日志中。

我在日志格式部分中添加了很多内容，如下所示：

{ "requestId":"$context.requestId", "ip": "$context.identity.sourceIp",
"requestTime":"$context.requestTime", "httpMethod":"$context.httpMethod",
"routeKey":"$context.routeKey", "status":"$context.status", 
"protocol":"$context.protocol", "errorMessage":"$context.error.message",
"path":"$context.path", 
"authorizerPrincipalId":"$context.authorizer.principalId",
"user":"$context.identity.user", "caller":"$context.identity.caller", 
"validationErrorString":"$context.error.validationErrorString", 
"errorResponseType":"$context.error.responseType", 
"integrationErrorMessage":"$context.integrationErrorMessage", 
"responseLength":"$context.responseLength" }

在早期开发中，这使我看到了此类错误：

{
"requestId": "QDu0QiP3oANFPZv=",
"ip": "76.54.32.210",
"requestTime": "21/Jul/2020:21:37:31 +0000",
"httpMethod": "POST",
"routeKey": "$default",
"status": "500",
"protocol": "HTTP/1.1",
"integrationErrorMessage": "The IAM role configured on the integration
    or API Gateway doesn't have permissions to call the integration.
    Check the permissions and try again.",
"responseLength": "35"
}

Answer 2

尝试在终端中使用wscat -c wss：//b91xftxta9.execute-api.eu-west-1.amazonaws.com/dev。这应该允许您连接它。如果您没有安装wscat，只需执行npm install -g wscat

Answer 3

要获取更多详细信息，请为您的API启用日志记录：Stages -> Logs/Tracing -> CloudWatch Settings -> Enable CloudWatch Logs。然后，再次发送连接请求，并在CloudWatch中监视您的API日志。就我而言，我遇到了下一个错误：

由于配置错误，执行失败：API网关无权承担提供的角色{arn_of_my_role}

因此，我已经在角色的信任关系中添加了 API网关，正如提到的here并解决了该问题。

AWS API Gateway WebSocket连接错误

3 个答案: