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http.get from async lambda timeout trying to reach public EC2

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2

I'm trying to figure out what I'm missing in this context.

I have an EC2 running two docker container. One is a python REST api, the other contains nginx which redirect to the python server.

Sending a GET request to my /test endpoint from the browser or postman returns the expected value.

I tried accessing the same public url from an AWS Lambda but the request timeout.

Here's my current situation

• The EC2 url is public and accessible from my browser.


• The Lambda can reach www.google.com sucessfully.


• The Lambda can't reach the EC2 url.


• The Lambda doesn't have a VPC.


• The Lambda is behind an API Gateway (websocket).


• Tried a high timeout value (30sec+).

The issue probably comes from my lack of knowledge of the AWS environment. Can anyone see the problem in the following code?

const AWS = require('aws-sdk');
require('./patch.js');
var http = require('http');

function test(url)
 return new Promise((resolve, reject) => 
 const req = http.request(url,
 (res) => 
 let body = '';
 res.on('data', (chunk) => (body += chunk.toString()));
 res.on('error', reject);
 res.on('end', () => 
 if (res.statusCode >= 200 && res.statusCode <= 299) 

 resolve(statusCode: res.statusCode, headers: res.headers, body: body);
 else 
 reject('Request failed. status: ' + res.statusCode + ', body: ' + body);
 
 );
 );
 req.on('error', reject);
 req.write('', 'binary');
 req.end();
 );



exports.handler = async(event) => 
 let googleUrl = "http://www.google.com";
 let ec2Url = "XXXXX"; // Public EC2 url

 await test(googleUrl).then(function(res)
 console.log("Response",res); // This is logged 
 );

 await test(ec2Url).then(function(res)
 console.log("Response",res); // This is never logged. Timeout kicked in.
 );
 return ;
;

javascript amazon-web-services amazon-ec2 aws-lambda

share|improve this question

edited Mar 23 at 23:00

John Rotenstein

82.5k793144

asked Mar 23 at 21:51

GabbGabb

111

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Increase your Lambda function timeout so that you get a real error -- not the environment-imposed timeout.
  
  – Michael - sqlbot
  Mar 24 at 1:38
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Increasing the Lambda timeout to >130s gives a "connect ETIMEDOUT" error.
  
  – Gabb
  Mar 24 at 11:12
  

  
  
  
  

add a comment | 

2

I'm trying to figure out what I'm missing in this context.

I have an EC2 running two docker container. One is a python REST api, the other contains nginx which redirect to the python server.

Sending a GET request to my /test endpoint from the browser or postman returns the expected value.

I tried accessing the same public url from an AWS Lambda but the request timeout.

Here's my current situation

• The EC2 url is public and accessible from my browser.


• The Lambda can reach www.google.com sucessfully.


• The Lambda can't reach the EC2 url.


• The Lambda doesn't have a VPC.


• The Lambda is behind an API Gateway (websocket).


• Tried a high timeout value (30sec+).

The issue probably comes from my lack of knowledge of the AWS environment. Can anyone see the problem in the following code?

const AWS = require('aws-sdk');
require('./patch.js');
var http = require('http');

function test(url)
 return new Promise((resolve, reject) => 
 const req = http.request(url,
 (res) => 
 let body = '';
 res.on('data', (chunk) => (body += chunk.toString()));
 res.on('error', reject);
 res.on('end', () => 
 if (res.statusCode >= 200 && res.statusCode <= 299) 

 resolve(statusCode: res.statusCode, headers: res.headers, body: body);
 else 
 reject('Request failed. status: ' + res.statusCode + ', body: ' + body);
 
 );
 );
 req.on('error', reject);
 req.write('', 'binary');
 req.end();
 );



exports.handler = async(event) => 
 let googleUrl = "http://www.google.com";
 let ec2Url = "XXXXX"; // Public EC2 url

 await test(googleUrl).then(function(res)
 console.log("Response",res); // This is logged 
 );

 await test(ec2Url).then(function(res)
 console.log("Response",res); // This is never logged. Timeout kicked in.
 );
 return ;
;

javascript amazon-web-services amazon-ec2 aws-lambda

share|improve this question

edited Mar 23 at 23:00

John Rotenstein

82.5k793144

asked Mar 23 at 21:51

GabbGabb

111

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Increase your Lambda function timeout so that you get a real error -- not the environment-imposed timeout.
  
  – Michael - sqlbot
  Mar 24 at 1:38
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Increasing the Lambda timeout to >130s gives a "connect ETIMEDOUT" error.
  
  – Gabb
  Mar 24 at 11:12
  

  
  
  
  

add a comment | 

I'm trying to figure out what I'm missing in this context.

I have an EC2 running two docker container. One is a python REST api, the other contains nginx which redirect to the python server.

Sending a GET request to my /test endpoint from the browser or postman returns the expected value.

I tried accessing the same public url from an AWS Lambda but the request timeout.

Here's my current situation

• The EC2 url is public and accessible from my browser.


• The Lambda can reach www.google.com sucessfully.


• The Lambda can't reach the EC2 url.


• The Lambda doesn't have a VPC.


• The Lambda is behind an API Gateway (websocket).


• Tried a high timeout value (30sec+).

The issue probably comes from my lack of knowledge of the AWS environment. Can anyone see the problem in the following code?

const AWS = require('aws-sdk');
require('./patch.js');
var http = require('http');

function test(url)
 return new Promise((resolve, reject) => 
 const req = http.request(url,
 (res) => 
 let body = '';
 res.on('data', (chunk) => (body += chunk.toString()));
 res.on('error', reject);
 res.on('end', () => 
 if (res.statusCode >= 200 && res.statusCode <= 299) 

 resolve(statusCode: res.statusCode, headers: res.headers, body: body);
 else 
 reject('Request failed. status: ' + res.statusCode + ', body: ' + body);
 
 );
 );
 req.on('error', reject);
 req.write('', 'binary');
 req.end();
 );



exports.handler = async(event) => 
 let googleUrl = "http://www.google.com";
 let ec2Url = "XXXXX"; // Public EC2 url

 await test(googleUrl).then(function(res)
 console.log("Response",res); // This is logged 
 );

 await test(ec2Url).then(function(res)
 console.log("Response",res); // This is never logged. Timeout kicked in.
 );
 return ;
;

javascript amazon-web-services amazon-ec2 aws-lambda

share|improve this question

edited Mar 23 at 23:00

John Rotenstein

82.5k793144

asked Mar 23 at 21:51

GabbGabb

111

const AWS = require('aws-sdk');
require('./patch.js');
var http = require('http');

function test(url)
 return new Promise((resolve, reject) => 
 const req = http.request(url,
 (res) => 
 let body = '';
 res.on('data', (chunk) => (body += chunk.toString()));
 res.on('error', reject);
 res.on('end', () => 
 if (res.statusCode >= 200 && res.statusCode <= 299) 

 resolve(statusCode: res.statusCode, headers: res.headers, body: body);
 else 
 reject('Request failed. status: ' + res.statusCode + ', body: ' + body);
 
 );
 );
 req.on('error', reject);
 req.write('', 'binary');
 req.end();
 );



exports.handler = async(event) => 
 let googleUrl = "http://www.google.com";
 let ec2Url = "XXXXX"; // Public EC2 url

 await test(googleUrl).then(function(res)
 console.log("Response",res); // This is logged 
 );

 await test(ec2Url).then(function(res)
 console.log("Response",res); // This is never logged. Timeout kicked in.
 );
 return ;
;

share|improve this question

edited Mar 23 at 23:00

John Rotenstein

82.5k793144

asked Mar 23 at 21:51

GabbGabb

111

share|improve this question

edited Mar 23 at 23:00

John Rotenstein

82.5k793144

asked Mar 23 at 21:51

GabbGabb

111

edited Mar 23 at 23:00

John Rotenstein

82.5k793144

edited Mar 23 at 23:00

John Rotenstein

82.5k793144

asked Mar 23 at 21:51

GabbGabb

111

asked Mar 23 at 21:51

GabbGabb

111

1 Answer
1

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oldest

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0

Turns out I didn't save the security group after editing it.
Check you security group inbound rules if you run into a similar problem.

share|improve this answer

answered Mar 24 at 20:25

GabbGabb

111

add a comment | 

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0

Turns out I didn't save the security group after editing it.
Check you security group inbound rules if you run into a similar problem.

share|improve this answer

answered Mar 24 at 20:25

GabbGabb

111

add a comment | 

0

Turns out I didn't save the security group after editing it.
Check you security group inbound rules if you run into a similar problem.

share|improve this answer

answered Mar 24 at 20:25

GabbGabb

111

add a comment | 

Turns out I didn't save the security group after editing it.
Check you security group inbound rules if you run into a similar problem.

share|improve this answer

answered Mar 24 at 20:25

GabbGabb

111

share|improve this answer

answered Mar 24 at 20:25

GabbGabb

111

answered Mar 24 at 20:25

GabbGabb

111

answered Mar 24 at 20:25

GabbGabb

111