问题
I am able to ssh into my droplet. Am also able to apt update and apt upgrade.
When I try to run sudo composer self-update or composer update, I am getting connection timeout error.
The "https://getcomposer.org/versions" file could not be downloaded: failed to open stream: Connection timed out
output of ufw status
To Action From
22 ALLOW Anywhere
80 ALLOW Anywhere
443 ALLOW Anywhere
25 ALLOW Anywhere
10000 ALLOW Anywhere
output of composer diagnose
Checking platform settings: OK
Checking git settings: OK
Checking http connectivity to packagist: FAIL
[Composer\Downloader\TransportException] The "http://packagist.org/packages.json" file could not be downloaded: failed to open stream: Connection timed out
Checking https connectivity to packagist: FAIL
[Composer\Downloader\TransportException] The "https://packagist.org/packages.json" file could not be downloaded: failed to open stream: Connection timed out
Checking github.com rate limit: OK
Checking disk free space: OK
Checking composer version:
[Composer\Downloader\TransportException]
The "https://getcomposer.org/version" file could not be downloaded: failed
to open stream: Connection timed out
output of composer --version
Composer version 1.0-dev (9e9c1917e1ed9f3f78b195a785aee3c6dc3cb883) 2015-11-23 10:31:23
output of curl IL http://packagist.org/packages.json
HTTP/1.1 200 OK
Server: nginx
Date: Sun, 10 Dec 2017 08:40:20 GMT
Content-Type: application/json
Content-Length: 1302
Last-Modified: Sun, 10 Dec 2017 08:38:28 GMT
Connection: keep-alive
ETag: "5a2cf284-516"
Cache-Control: private, max-age=0, no-cache
Accept-Ranges: bytes
I tried to manually get a copy of latest composer but it also doesn't work
output of php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');"
PHP Warning: copy(https://getcomposer.org/installer): failed to open stream: Connection timed out in Command line code on line 1
What could be the reason? I was all working till about a week ago. I am able to visit (browse) the webpages hosted on my droplett. Am also able to apt update and apt upgrade.
回答1:
https://getcomposer.org/doc/articles/troubleshooting.md#operation-timed-out-ipv6-issues- could solve your problem. And if composer update is slow afterwards, try running it with a more recent PHP version. Running it with PHP 7 instead of PHP 5 will cause a big speedup
回答2:
You can run this command as root to make IPV4 more prior than IPV6:
sudo sh -c "echo 'precedence ::ffff:0:0/96 100' >> /etc/gai.conf"
回答3:
I also found a bug on executing composer command this last time about this timeout. Run "compose diag" then restart the command solved the problem if it is not related to ipv6
回答4:
My Issue is caused by PHP 7.2, after switch back to PHP 7.1 'sphp 7.1', run the command 'composer update' again, and it works
来源：https://stackoverflow.com/questions/47737389/connection-timeout-error-while-updating-composer-on-digital-ocean