【发布时间】：2018-11-23 06:38:50
【问题描述】：
问题
我正在通过 Apache2 反向代理运行节点服务器 (sqlpad)。
在某些请求上，节点服务器在直接访问时会返回没有Content-Type 的304 状态码。但是，当通过反向代理访问时，状态码将更改为 200，并在 Content-Type 中添加值 text/html。 Content-Type 的添加导致应用无法加载 JS 和 CSS，因为 X-Content-Type-Options: nosniff 在标头中。
我真的不想更改节点服务器，因为它不是我的项目。我想用反向代理配置来解决这个问题。
如何配置 Apache2 ProxyPass 以转发原始 304 响应，或者至少不使用默认值填写缺少的 Content-Type？
这是我的具体情况：
配置
# /etc/apache2/sites-enabled/xxxx.conf
...
<Location "/sqlpad">
ProxyPass http://x.x.x.x:xxxx # IP address of Node server
ProxyPassReverse http://x.x.x.x:xxxx # IP address of Node server
</Location>
# /etc/apache2/apache2.conf (comments removed)
ServerName xxxxx.com
DefaultRuntimeDir ${APACHE_RUN_DIR}
PidFile ${APACHE_PID_FILE}
Timeout 600
KeepAlive On
MaxKeepAliveRequests 100
KeepAliveTimeout 5
User ${APACHE_RUN_USER}
Group ${APACHE_RUN_GROUP}
HostnameLookups Off
ErrorLog ${APACHE_LOG_DIR}/error.log
LogLevel warn
IncludeOptional mods-enabled/*.load
IncludeOptional mods-enabled/*.conf
Include ports.conf
<Directory />
Options FollowSymLinks
AllowOverride None
Require all denied
</Directory>
<Directory /usr/share>
AllowOverride None
Require all granted
</Directory>
<Directory /var/www/>
Options Indexes FollowSymLinks
AllowOverride None
Require all granted
</Directory>
AccessFileName .htaccess
<FilesMatch "^\.ht">
Require all denied
</FilesMatch>
LogFormat "%v:%p %h %l %u %t \"%r\" %>s %O \"%{Referer}i\" \"%{User-Agent}i\"" vhost_combined
LogFormat "%h %l %u %t \"%r\" %>s %O \"%{Referer}i\" \"%{User-Agent}i\"" combined
LogFormat "%h %l %u %t \"%r\" %>s %O" common
LogFormat "%{Referer}i -> %U" referer
LogFormat "%{User-agent}i" agent
IncludeOptional conf-enabled/*.conf
IncludeOptional sites-enabled/*.conf
标题
原始请求/响应（无代理）：
Request Url: http://xxxx/sqlpad/static/js/main.266789c5.js
Request Method: Get
Status: 304 Not Modified
Response Headers:
HTTP/1.1 304 Not Modified
X-DNS-Prefetch-Control: off
Strict-Transport-Security: max-age=15552000; includeSubDomains
X-Download-Options: noopen
X-Content-Type-Options: nosniff
X-XSS-Protection: 1; mode=block
Referrer-Policy: same-origin
Accept-Ranges: bytes
Cache-Control: public, max-age=0
Last-Modified: Sat, 26 Oct 1985 08:15:00 GMT
ETag: W/"1d86fc-7438674ba0"
Date: Wed, 13 Jun 2018 15:04:20 GMT
Connection: keep-alive
Request Headers:
GET /sqlpad/static/js/main.266789c5.js HTTP/1.1
Host: xxxx
Connection: keep-alive
If-None-Match: W/"1d86fc-7438674ba0"
If-Modified-Since: Sat, 26 Oct 1985 08:15:00 GMT
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_5)
AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.87 Safari/537.36
Accept: */*
Referer: http://localhost:56173/sqlpad/signin
Accept-Encoding: gzip, deflate, br
Accept-Language: en-US,en;q=0.9
代理请求/响应：
Request Url: http://xxxx/sqlpad/static/js/main.266789c5.js
Request Method: Get
Status: 200 OK
Response Headers:
Connection: Keep-Alive
Content-Encoding: gzip
Content-Length: 496
Content-Type: text/html; charset=utf-8
Date: Wed, 13 Jun 2018 15:18:29 GMT
ETag: W/"320-Lp3a/E+wIigPW+CnI/Elyd7OYoA-gzip"
Keep-Alive: timeout=5, max=98
Referrer-Policy: same-origin
Server: Apache/2.4.33 (Ubuntu)
Strict-Transport-Security: max-age=15552000; includeSubDomains
Vary: Accept-Encoding
X-Content-Type-Options: nosniff
X-DNS-Prefetch-Control: off
X-Download-Options: noopen
X-XSS-Protection: 1; mode=block
Request Headers:
GET /sqlpad/static/js/main.266789c5.js HTTP/1.1
Host: xxxx
Connection: keep-alive
If-None-Match: W/"320-Lp3a/E+wIigPW+CnI/Elyd7OYoA-gzip"
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.87 Safari/537.36
Accept: */*
Referer: http://xxxx/sqlpad
Accept-Encoding: gzip, deflate
Accept-Language: en-US,en;q=0.9
Cookie: __zlcmid=xxxx; PHPSESSID=xxxx
我在 Ubuntu 16.04.4 上使用 Apache/2.4.33
【问题讨论】：
标签： apache2 reverse-proxy mod-proxy proxypass