CODEWITHSUNDEEP
aws-lambdaaws-api-gateway
StackUser
StackUser

Reputation: 123

AWS Lambda API gives 502 error on POST request

POST request works fine for Lambda function and API. However, when I hit it through Postman then it gives 502 internal Gateway error.

When I print request in Clouwatch logs for Postman POST request, I get the following:

{
"resource": "/{proxy+}",
"path": "/entitlement",
"httpMethod": "POST",
 "body": "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",
"isBase64Encoded": true
}

When I print request in logs for API Gateway, I get the following:

{
"resource": "/{proxy+}",
"path": "/entitlement",
"httpMethod": "POST",
"body": "{\"lastRenewal\":1532500221761,\"soldTo\":\"0001652453\",\"startDate\":1532500221761,\"expirationDate\":1535178621761,\"activationCode\":\"0449835557734402\",\"quantity\":0,\"version\":\"219\",\"term\":\"monthly\",\"active\":true,\"customerId\":null,\"firstName\":\"THIRD\",\"lastName\":\"TEST\",\"companyName\":\"Thirdtest\",\"cancellationDate\":null,\"email\":\"[email protected]\"}",
"isBase64Encoded": false
}

GET request works fine. Face issue only for POST request.

Upvotes: 1

Views: 1217

Answers (1)

StackUser
StackUser

Reputation: 123

In 'API-Gateway' console, expand API and select 'Settings' tab. There is a field for 'Binary Media type', which was set to "*/*', due to which 'isBase64Encoded' is set to true in POST request.

However, my application was posting only json data in request body, so there is no need for 'binary support'. So we removed this field and it worked fine.

If you are posting binary data(images/files), in that case set 'Binary Media type' to respective file support type.

Upvotes: 3

Related Questions