mirror of
https://github.com/tj/n.git
synced 2024-11-28 21:22:03 +01:00
99 lines
3.7 KiB
Markdown
99 lines
3.7 KiB
Markdown
# Proxy Server
|
|
|
|
Under the hood, `n` uses `curl` or `wget` for the downloads. `curl` is used if available, and `wget` otherwise. Both `curl` and `wget` support using environment variables or startup files to set up the proxy.
|
|
|
|
## Using Environment Variable
|
|
|
|
You can define the proxy server using an environment variable, which is read by multiple commands including `curl` and `wget`:
|
|
|
|
export https_proxy='https://host:port/path'
|
|
|
|
If your proxy requires authentication you can add the [url-encoded](https://urlencode.org) username and password into the URL. e.g.
|
|
|
|
export https_proxy='https://encoded-user:encoded-password@host:port/path'
|
|
|
|
If you have defined a custom node mirror which uses http, then you would define `http_proxy` rather than `https_proxy`.
|
|
|
|
If you use `sudo` to run `n`, you need to do something extra to make the environment variables available. A simple way is to use `-E` (`--preserve-env`):
|
|
|
|
sudo -E n lts
|
|
|
|
## Certificate Checks
|
|
|
|
Your proxy server may supply its own ssl certificates for remote sites (as a man-in-the-middle). If you can not arrange to trust the proxy in this role, you can turn off (all) certificate checking with `--insecure`. e.g.
|
|
|
|
n --insecure --lts
|
|
|
|
Another possible work-around for certificate problems is to use plain http by specifying a custom node mirror:
|
|
|
|
export NODE_MIRROR='http://nodejs.org/dist'
|
|
export http_proxy='http://host:port/path'
|
|
n --lts
|
|
|
|
## Startup Files
|
|
|
|
An alternative to using an environment variable for the proxy settings is to configure a startup file for the command.
|
|
|
|
Example `~/.curlrc` ([documentation](https://ec.haxx.se/cmdline-configfile.html))
|
|
|
|
proxy = http://host:port/path
|
|
proxy-user = user:password
|
|
# If need to disable certificate checks
|
|
--insecure
|
|
|
|
Example `~/.wgetrc` ([documentation](https://www.gnu.org/software/wget/manual/html_node/Wgetrc-Commands.html#Wgetrc-Commands))
|
|
|
|
https_proxy = http://host:port/path
|
|
proxy_user = user
|
|
proxy_password = password
|
|
# If need to disable certificate checks
|
|
check_certificate = off
|
|
|
|
## Troubleshooting
|
|
|
|
To experiment and find what settings you need, use `curl` (or `wget`) directly with the node mirror and check the error messages.
|
|
|
|
For these examples there is a proxy running on localhost:8080 which does not require authentication, but the certificates it offers
|
|
are not trusted.
|
|
|
|
First try fails because of the certificates and `curl` helpfully explains:
|
|
|
|
$ curl --proxy localhost:8080 https://nodejs.org/dist/
|
|
curl: (60) SSL certificate problem: self signed certificate in certificate chain
|
|
...
|
|
If you'd like to turn off curl's verification of the certificate, use
|
|
the -k (or --insecure) option.
|
|
HTTPS-proxy has similar options --proxy-cacert and --proxy-insecure.
|
|
|
|
Once you get the command to work with settings appropriate for your setup, like:
|
|
|
|
$ curl --insecure --proxy localhost:8080 https://nodejs.org/dist/
|
|
<html>
|
|
<head><title>Index of /dist/</title></head>
|
|
...
|
|
|
|
then you can try moving the proxy out of the command:
|
|
|
|
$ https_proxy=localhost:8080 curl --insecure https://nodejs.org/dist/
|
|
<html>
|
|
<head><title>Index of /dist/</title></head>
|
|
...
|
|
|
|
and then `n` should work the same way:
|
|
|
|
$ https_proxy=localhost:8080 n --insecure --lts
|
|
8.11.3
|
|
|
|
To make it permanent either add settings to the `curl` (or `wget`) startup file, or add the
|
|
environment variable to your shell initialization file . e.g.
|
|
|
|
export https_proxy=localhost:8080
|
|
|
|
For curl, two options of note for debugging are:
|
|
|
|
-v, --verbose
|
|
Makes curl verbose during the operation. Useful for debugging and seeing what's going on "under the hood". ...
|
|
|
|
-q, --disable
|
|
If used as the first parameter on the command line, the curlrc config file will not be read and used. ...
|