我能够进入我的小滴。我也能够更新和升级。
当我尝试运行sudo composer self-update或composer update时，我收到连接超时错误。
The "https://getcomposer.org/versions" file could not be downloaded: failed to open stream: Connection timed out
ufw status
To Action From
22 ALLOW Anywhere
80 ALLOW Anywhere
443 ALLOW Anywhere
25 ALLOW Anywhere
10000 ALLOW Anywhere
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
composer --version
Composer version 1.0-dev (9e9c1917e1ed9f3f78b195a785aee3c6dc3cb883) 2015-11-23 10:31:23
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
我试图手动获取最新作曲家的副本，但它也不起作用
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
可能是什么原因？大约一个星期前我一直都在工作。我可以访问（浏览）我的droplett上托管的网页。我也能够更新和升级。
答案 0 :(得分：3)
您可以以root身份运行此命令，使IPV4优于IPV6：
sudo sh -c "echo 'precedence ::ffff:0:0/96 100' >> /etc/gai.conf"
答案 1 :(得分：1)
https://getcomposer.org/doc/articles/troubleshooting.md#operation-timed-out-ipv6-issues-可以解决您的问题。如果composer update之后变慢，请尝试使用更新的PHP版本运行它。使用PHP 7而不是PHP 5运行它将导致大的加速
答案 2 :(得分：0)
我也发现了上一次关于此超时的执行composer命令的错误。运行“ compose diag”，然后重新启动命令，以解决与ipv6不相关的问题
答案 3 :(得分：0)
我的问题是由PHP 7.2引起的，切换回PHP 7.1'sphp 7.1'后，再次运行命令'composer update'，它可以正常工作