javascript - node-request - Getting error "SSL23_GET_SERVER_HELLO:unknown protocol" - Stack Overflow

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I'm using the node-request module, regularly sending GET requests to a set of URLs and, sometimes, getting the error below on some sites.

Error: 29472:error:140770FC:SSL routines:SSL23_GET_SERVER_HELLO:unknown protocol:openssl\ssl\s23_clnt.c:683

The problem is that I don't get this error always or always on the some URLs, just sometimes. Also, it can't be ignored with "strictSSL: false".

I have read that this can be related to me sending SSL requests with the wrong protocol (SSLv2, SSLv3, TLS..). But this doesn't explain why it happens irregularly.

Btw, I'm running nodejs on a Win 2008 server.

Any help is appreciated.

I'm using the node-request module, regularly sending GET requests to a set of URLs and, sometimes, getting the error below on some sites.

Error: 29472:error:140770FC:SSL routines:SSL23_GET_SERVER_HELLO:unknown protocol:openssl\ssl\s23_clnt.c:683

The problem is that I don't get this error always or always on the some URLs, just sometimes. Also, it can't be ignored with "strictSSL: false".

I have read that this can be related to me sending SSL requests with the wrong protocol (SSLv2, SSLv3, TLS..). But this doesn't explain why it happens irregularly.

Btw, I'm running nodejs on a Win 2008 server.

Any help is appreciated.

• javascript
• node.js
• ssl
• request

Share Improve this question Follow edited Dec 26, 2019 at 15:49 Ben 57.1k5050 gold badges183183 silver badges228228 bronze badges asked Mar 14, 2013 at 22:02 umutmumutm 2,87444 gold badges2323 silver badges2222 bronze badges 2

• What happens when you retry the same urls a few seconds latter? – generalhenry Commented Mar 14, 2013 at 23:10
• 1 Few seconds later, I get no errors. The errors are only returned sometimes. – umutm Commented Mar 15, 2013 at 8:54

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10 Answers 10

Sorted by: Reset to default 114

You will get such error message when you request HTTPS resource via wrong port, such as 80. So please make sure you specified right port, 443, in the Request options.

This was totally my bad.

I was using standard node http.request on a part of the code which should be sending requests to only http adresses. Seems like the db had a single https address which was queried with a random interval.

Simply, I was trying to send a http request to https.

I got this error because I was using require('https') where I should have been using require('http').

Some of the sites are speaking SSLv2, or at least sending an SSLv2 server-hello, and your client doesn't speak, or isn't configured to speak, SSLv2. You need to make a policy decision here. SSLv2 should have vanished from the face of the earth years ago, and sites that still use it are insecure. However, if you gotta talk to them, you just have to enable it at your end, if you can. I would complain to the site owners though if you can.

I had this problem (403 error for each package) and I found nothing great in the internet to solve it. My .npmrc file inside my user folder was wrong and misunderstood. I changed this npmrc line from

proxy=http://XX.XX.XXX.XXX:XXX/

to :

proxy = XX.XX.XXX.XXX:XXXX

var https = require('https');
https.globalAgent.options.secureProtocol = 'SSLv3_method';

I got this error while connecting to Amazon RDS. I checked the server status 50% of CPU usage while it was a development server and no one is using it.

It was working before, and nothing in the connection configuration has changed. Rebooting the server fixed the issue for me.

So in Short,

vi ~/.proxy_info

export http_proxy=<username>:<password>@<proxy>:8080
export https_proxy=<username>:<password>@<proxy>:8080

source ~/.proxy_info

Hope this helps someone in hurry :)

in my case (the website SSL uses ev curves) the issue with the SSL was solved by adding this option ecdhCurve: 'P-521:P-384:P-256'

request({ url, 
   agentOptions: { ecdhCurve: 'P-521:P-384:P-256', }
}, (err,res,body) => {
...

JFYI, maybe this will help someone

I got this error, while using it on my rocketchat to communicate with my gitlab via enterprise proxy,

Because, was using the https://:8080 but actually, it worked for http://:8080

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