Nginx代理或重写取决于用户代理

问题描述

我是新的到nginx，从apache和我基本上想做以下：

基于用户代理：
iPhone：redirect到iphone.mydomain.com

android：重定向到android.mydomain.com

facebook：reverse proxy otherdomain.com

所有其他：重定向到...

并尝试使用以下方式： p>

  location / tvoice {
 if（$ http_user_agent〜iPhone）{
 rewrite ^（。*）https： //m.domain1.com$1 permanent; 
} 
 ... 
 if（$ http_user_agent〜facebookexternalhit）{
 proxy_pass http://mydomain.com/api; 
} 
 
 rewrite /tvoice/(.*）http://mydomain.com/#!tvoice/$1 permanent; 
} 
  

但是现在我在启动nginx时遇到错误：

nginx：[proxy]proxy_pass不能在由正则表达式或命名位置或if语句内部给定的位置中具有URI部分，里面limit_except


我不知道该怎么做或问题是什么。

感谢

解决方案

proxy_pass目标的'/ api'引用错误消息的URI部分。由于ifs是伪位置，而proxy_pass和uri部分用给定的uri替换匹配的位置，因此不允许在if中。如果你只是反转if的逻辑，你可以让这个工作：

  location / tvoice {
 if http_user_agent〜iPhone）{
＃return 301比没有重写的时候更好的重写
 return 301 https：//m.domain1.com$request_uri; 
 
＃如果你使用的是不支持上述语法的旧版本的nginx，
＃这种重写优于原来的：
＃rewrite ^ https ：//m.domain.com$request_uri？常驻; 
} 
 
 ... 
 
 if（$ http_user_agent！〜facebookexternalhit）{
 rewrite ^ / tvoice /(.*）http：// mydomain.com/#!tvoice/$1 permanent; 
} 
 
 proxy_pass http://mydomain.com/api; 
} 
  

i'm new to nginx, comming from apache and i basically want to do the following:

Based on user-agent:iPhone: redirect to iphone.mydomain.com

android: redirect to android.mydomain.com

facebook: reverse proxy to otherdomain.com

all other: redirect to ...

and tried it the following way:

location /tvoice {
   if ($http_user_agent ~ iPhone ) {
    rewrite     ^(.*)   https://m.domain1.com$1 permanent;
   }
   ...
   if ($http_user_agent ~ facebookexternalhit) {
    proxy_pass         http://mydomain.com/api;
   }

   rewrite     /tvoice/(.*)   http://mydomain.com/#!tvoice/$1 permanent;
}

But now i get an error when starting nginx:

nginx: [emerg] "proxy_pass" cannot have URI part in location given by regular expression, or inside named location, or inside "if" statement, or inside "limit_except"

And i dont get how to do it or what the problem is.

Thanks

解决方案

The '/api' part of the proxy_pass target is the URI part the error message is referring to. Since ifs are pseudo-locations, and proxy_pass with a uri part replaces the matched location with the given uri, it's not allowed in an if. If you just invert that if's logic, you can get this to work:

location /tvoice {
  if ($http_user_agent ~ iPhone ) {
    # return 301 is preferable to a rewrite when you're not actually rewriting anything
    return 301 https://m.domain1.com$request_uri;

    # if you're on an older version of nginx that doesn't support the above syntax,
    # this rewrite is preferred over your original one:
    # rewrite ^ https://m.domain.com$request_uri? permanent;
  }

  ...

  if ($http_user_agent !~ facebookexternalhit) {
    rewrite ^/tvoice/(.*) http://mydomain.com/#!tvoice/$1 permanent;
  }

  proxy_pass         http://mydomain.com/api;
}

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