ECONNRESET proxy error between dev server and API

node.js sockets debugging proxy econnreset
Trey Granderson picture Trey Granderson · Dec 6, 2016 · Viewed 10.6k times · Source

When I run my development server, I get the following error. 

Proxy error: Could not proxy request /graphql from localhost:3000 to http://localhost:3010.
See https://nodejs.org/api/errors.html#errors_common_system_errors for more information (ECONNRESET).

It is preventing me from proxying any requests from the development server to the API.

After debugging, I realized it was not a problem with the code because my colleague and I are working from the same repo and he does not have this error. Also, sometimes if I restart my terminal the error will go away before it comes back again.

Would greatly appreciate guidance on what is the root of this issue and how I can resolve it.

Answer

Trey Granderson picture Trey Granderson · Dec 8, 2016

What I discovered, and what seems to have solved the problem, is that I was running too many different servers on ports that were too close together. My servers were running on port 3000, 3010, and 3009. I noticed that whenever the server at 3009 was running, I would get the above error. When I changed the port for that server from 3009 to 9999, all proxy errors ceased.

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