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Double slash in URL is automatically converted in single slash in $_SERVER['REQUEST_URI']

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0

I am working on one site where I need to show 404 pages when someone adds double slash in URL.

I have written logic to check REQUEST_URI and if there is double slash then I am showing 404 pages...

But when I add double slash in URL it shows single slash in REQUEST_URI but in URL, it is double slash...

here I attached a screenshot for the same issue.

For Example: if i enter www.example.com//check -> then its is coming
as /check in REQUEST_URI but i want it should come as //check

Site is hosted in AWS cloud load balancer (ELB). in local setting its
working proeper but in production its creating issue.

Can someone help me how can I prevent this?

nginx amazon-web-services amazon-elb

share|improve this question

asked Apr 24 at 11:25

joyjoy

1011

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  It's standard normalization of the path, why would you want this (and not use some other method to solve whatever problem you're trying to fix)?
  
  – wurtel
  Apr 24 at 11:32
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  how can I prevent this normalization? @wurtel
  
  – joy
  Apr 24 at 11:33
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  problem is in google crawler its showing same page as duplicate content so we need to show 404 pages whenever double slash comes in url @wurtel
  
  – joy
  Apr 24 at 11:34
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Have you considered that it might be your Amazon Load Balancer?
  
  – Michael Hampton♦
  Apr 24 at 13:03
  

  
  
  
  

add a comment | 

0

I am working on one site where I need to show 404 pages when someone adds double slash in URL.

I have written logic to check REQUEST_URI and if there is double slash then I am showing 404 pages...

But when I add double slash in URL it shows single slash in REQUEST_URI but in URL, it is double slash...

here I attached a screenshot for the same issue.

For Example: if i enter www.example.com//check -> then its is coming
as /check in REQUEST_URI but i want it should come as //check

Site is hosted in AWS cloud load balancer (ELB). in local setting its
working proeper but in production its creating issue.

Can someone help me how can I prevent this?

nginx amazon-web-services amazon-elb

share|improve this question

asked Apr 24 at 11:25

joyjoy

1011

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  It's standard normalization of the path, why would you want this (and not use some other method to solve whatever problem you're trying to fix)?
  
  – wurtel
  Apr 24 at 11:32
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  how can I prevent this normalization? @wurtel
  
  – joy
  Apr 24 at 11:33
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  problem is in google crawler its showing same page as duplicate content so we need to show 404 pages whenever double slash comes in url @wurtel
  
  – joy
  Apr 24 at 11:34
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Have you considered that it might be your Amazon Load Balancer?
  
  – Michael Hampton♦
  Apr 24 at 13:03
  

  
  
  
  

add a comment | 

I am working on one site where I need to show 404 pages when someone adds double slash in URL.

I have written logic to check REQUEST_URI and if there is double slash then I am showing 404 pages...

But when I add double slash in URL it shows single slash in REQUEST_URI but in URL, it is double slash...

here I attached a screenshot for the same issue.

For Example: if i enter www.example.com//check -> then its is coming
as /check in REQUEST_URI but i want it should come as //check

Site is hosted in AWS cloud load balancer (ELB). in local setting its
working proeper but in production its creating issue.

Can someone help me how can I prevent this?

nginx amazon-web-services amazon-elb

share|improve this question

asked Apr 24 at 11:25

joyjoy

1011

share|improve this question

asked Apr 24 at 11:25

joyjoy

1011

share|improve this question

asked Apr 24 at 11:25

joyjoy

1011

asked Apr 24 at 11:25

joyjoy

1011

asked Apr 24 at 11:25

joyjoy

1011

1 Answer
1

active

oldest

votes

2

If the problem is that Google has indexed the double slash version as well as the regular path, then it's better to use a redirect to send google to the correct path.

As you tagged this question with nginx, the easiest solution is to use a selective rewrite, such as:

location / 
 if ($request_uri ~ ^//) 
 rewrite ^/.* $uri permanent;
 
 [...]

This works because $request_uri is the original URI, while $uri is the normalized one. The rewrite statement replaces the complete URI with the normalized one, so that Google knows that the double slash version is to be replaced by the normalized one.

share|improve this answer

answered Apr 24 at 12:02

wurtelwurtel

3,038512

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I have added same but it is not working too
  
  – joy
  Apr 24 at 12:33
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  i think $request_uri its also coming as single slash
  
  – joy
  Apr 24 at 12:34
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I have checked in nginx too $request_uri also coming with a single slash so the problem is somewhere else
  
  – joy
  Apr 24 at 13:11
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  i think AWS load balancer is removing double slash .... any idea how can i stop this
  
  – joy
  Apr 24 at 13:16
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I had tested this first on my own nginx so I know the solution works; I have no idea whether it's possible to change how the AWS load balancer handles this. You could try using google webmaster tools to remove the wrong path.
  
  – wurtel
  Apr 24 at 13:29
  

  
  
  
  

 | 
show 2 more comments

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2

If the problem is that Google has indexed the double slash version as well as the regular path, then it's better to use a redirect to send google to the correct path.

As you tagged this question with nginx, the easiest solution is to use a selective rewrite, such as:

location / 
 if ($request_uri ~ ^//) 
 rewrite ^/.* $uri permanent;
 
 [...]

This works because $request_uri is the original URI, while $uri is the normalized one. The rewrite statement replaces the complete URI with the normalized one, so that Google knows that the double slash version is to be replaced by the normalized one.

share|improve this answer

answered Apr 24 at 12:02

wurtelwurtel

3,038512

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I have added same but it is not working too
  
  – joy
  Apr 24 at 12:33
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  i think $request_uri its also coming as single slash
  
  – joy
  Apr 24 at 12:34
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I have checked in nginx too $request_uri also coming with a single slash so the problem is somewhere else
  
  – joy
  Apr 24 at 13:11
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  i think AWS load balancer is removing double slash .... any idea how can i stop this
  
  – joy
  Apr 24 at 13:16
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I had tested this first on my own nginx so I know the solution works; I have no idea whether it's possible to change how the AWS load balancer handles this. You could try using google webmaster tools to remove the wrong path.
  
  – wurtel
  Apr 24 at 13:29
  

  
  
  
  

 | 
show 2 more comments

2

If the problem is that Google has indexed the double slash version as well as the regular path, then it's better to use a redirect to send google to the correct path.

As you tagged this question with nginx, the easiest solution is to use a selective rewrite, such as:

location / 
 if ($request_uri ~ ^//) 
 rewrite ^/.* $uri permanent;
 
 [...]

This works because $request_uri is the original URI, while $uri is the normalized one. The rewrite statement replaces the complete URI with the normalized one, so that Google knows that the double slash version is to be replaced by the normalized one.

share|improve this answer

answered Apr 24 at 12:02

wurtelwurtel

3,038512

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I have added same but it is not working too
  
  – joy
  Apr 24 at 12:33
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  i think $request_uri its also coming as single slash
  
  – joy
  Apr 24 at 12:34
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I have checked in nginx too $request_uri also coming with a single slash so the problem is somewhere else
  
  – joy
  Apr 24 at 13:11
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  i think AWS load balancer is removing double slash .... any idea how can i stop this
  
  – joy
  Apr 24 at 13:16
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I had tested this first on my own nginx so I know the solution works; I have no idea whether it's possible to change how the AWS load balancer handles this. You could try using google webmaster tools to remove the wrong path.
  
  – wurtel
  Apr 24 at 13:29
  

  
  
  
  

 | 
show 2 more comments

If the problem is that Google has indexed the double slash version as well as the regular path, then it's better to use a redirect to send google to the correct path.

As you tagged this question with nginx, the easiest solution is to use a selective rewrite, such as:

location / 
 if ($request_uri ~ ^//) 
 rewrite ^/.* $uri permanent;
 
 [...]

This works because $request_uri is the original URI, while $uri is the normalized one. The rewrite statement replaces the complete URI with the normalized one, so that Google knows that the double slash version is to be replaced by the normalized one.

share|improve this answer

answered Apr 24 at 12:02

wurtelwurtel

3,038512

location / 
 if ($request_uri ~ ^//) 
 rewrite ^/.* $uri permanent;
 
 [...]

share|improve this answer

answered Apr 24 at 12:02

wurtelwurtel

3,038512

answered Apr 24 at 12:02

wurtelwurtel

3,038512

answered Apr 24 at 12:02

wurtelwurtel

3,038512