Curl 返回“未知协议" [英] Curl returns "Unknown protocol"

问题描述

尽管在 Google 上有很多结果，但似乎没有一个给出答案.我有一个 Debian 盒子，我可以在其中执行此操作:

Even though there's a lot of results on Google none of them seem to give an answer. I have a Debian box where I do this:

# curl https://localhost/api/v1/status --verbose
* About to connect() to localhost port 443 (#0)
*   Trying ::1...
* connected
* Connected to localhost (::1) port 443 (#0)
* successfully set certificate verify locations:
*   CAfile: none
  CApath: /etc/ssl/certs
* SSLv3, TLS handshake, Client hello (1):
* error:140770FC:SSL routines:SSL23_GET_SERVER_HELLO:unknown protocol
* Closing connection #0
curl: (35) error:140770FC:SSL routines:SSL23_GET_SERVER_HELLO:unknown protocol

我无法通过未知协议的事情.我试过 -ssl -sslv3 但他们无处可去.实际上，-sslv3 给我的结果略有不同:

I can't get passed the unknown protocol thing. I've tried -ssl -sslv3 but they get me nowhere. Actually, -sslv3 gets me slightly different results:

s# curl https://localhost/api/v1/status --verbose -sslv3
* About to connect() to localhost port 443 (#0)
*   Trying ::1...
* connected
* Connected to localhost (::1) port 443 (#0)
* successfully set certificate verify locations:
*   CAfile: none
  CApath: /etc/ssl/certs
* SSLv3, TLS handshake, Client hello (1):
* SSLv3, TLS alert, Server hello (2):
* error:1408F10B:SSL routines:SSL3_GET_RECORD:wrong version number
* Closing connection #0

我的虚拟主机是这样配置的(片段):

My virtualhost is configured as thus (fragment):

    SSLEngine on
    SSLProtocol all -SSLv2
    SSLCipherSuite ALL:!ADH:!EXPORT:!SSLv2:RC4+RSA:+HIGH:+MEDIUM

    SSLCertificateFile    /etc/apache2/ssl.key/xxx/ssl.cert
    SSLCertificateKeyFile /etc/apache2/ssl.key/xxx/xxx.xxx.key

    #   Server Certificate Chain:
    SSLCertificateChainFile /etc/apache2/ssl.key/sub.class1.server.ca.pem

    #   Certificate Authority (CA):
    SSLCACertificateFile /etc/apache2/ssl.key/ca.pem

    <FilesMatch "\.(cgi|shtml|phtml|php)$">
            SSLOptions +StdEnvVars
    </FilesMatch>
    <Directory /usr/lib/cgi-bin>
            SSLOptions +StdEnvVars
    </Directory>
    BrowserMatch "MSIE [2-6]" \
            nokeepalive ssl-unclean-shutdown \
            downgrade-1.0 force-response-1.0
    # MSIE 7 and newer should be able to use keepalive
    BrowserMatch "MSIE [17-9]" ssl-unclean-shutdown

任何帮助将不胜感激.

更新我想我发现了我自己的问题！

edit: Update I think I found my own problem!

虚拟主机绑定到外部接口，curl 试图通过 localhost 连接.所以它永远不会在配置的虚拟主机上结束.

The Virtual Host was bound to the external interface, and curl was trying to connect over localhost. So it never ended up at the configured virtual host.

为了解决这个问题，我创建了一个绑定到 127.0.0.1:80 的新 VirtualHost 条目，它只允许来自 localhost 的连接.就我而言，这就足够了.

To fix this, I have created a new VirtualHost entry bound to 127.0.0.1:80 that only allows connections from localhost. For my purposes, that is enough.

推荐答案

虽然不是 OP 的情况，但是当您不小心尝试使用 HTTPS 调用 HTTP 服务器时，通常在本地期间，会出现 cURL 中的错误未知协议"发展.
只是提一下，以防有人用谷歌搜索这个错误并登陆这里.

Although it is not the case of the OP, the error "Unknown protocol" in cURL appears when you accidentally trying to call HTTP server using HTTPS, usually during local development.
Just mentioning it in case someone Googles this error and lands here.

curl:(35) 错误:140770FC:SSL 例程:SSL23_GET_SERVER_HELLO:未知协议

这篇关于Curl 返回“未知协议"的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！