# 400 bad request and utf8

**URL:** <https://www.ruby-forum.com/t/400-bad-request-and-utf8/236687>\
**Category:** NGINX\
**Created:** [September 25, 2013, 2:17pm UTC](https://www.ruby-forum.com/t/400-bad-request-and-utf8/236687 "2013-09-25T14:17:44Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![addis\_a](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/c4cdca/32.png) [@addis\_a](https://www.ruby-forum.com/u/addis_a)\
**Post date:** [September 25, 2013, 2:17pm UTC](https://www.ruby-forum.com/t/400-bad-request-and-utf8/236687/1 "2013-09-25T14:17:44Z")

</div>

Hi,

Im using nginx and rails for my site which contains url with georgian  
letters ie განცხადებები so something like

> **[ყველა განცხადება - gancxadebebi.ge, უფასო განცხადებების საიტი საქართველოში](https://gancxadebebi.ge/ka/%E1%83%92%E1%83%90%E1%83%9C%E1%83%AA%E1%83%AE%E1%83%90%E1%83%93%E1%83%94%E1%83%91%E1%83%94%E1%83%91%E1%83%98)**
>
> ყველა განცხადება - gancxadebebi.ge, უფასო განცხადებების საიტი საქართველოში. მოდით და იხილეთ ჩვენს საიტზე, უკვე ათასობით განცხადებები დაელოდება თქვენ ... და რატომ არ თქვენი ადვილია და 100% უფასოდ! თქვენ გაქვთ ბევრი პროდუქტი ან განცხადებები, შექმნათ...

It is mainly working perfectly but sometimes I receive request with  
truncated url ie  
1 -  
[http://gancxadebebi.ge/ka/განცხადებებ��%9](http://gancxadebebi.ge/ka/%E1%83%92%E1%83%90%E1%83%9C%E1%83%AA%E1%83%AE%E1%83%90%E1%83%93%E1%83%94%E1%83%91%E1%83%94%E1%83%91%E1%83%259)  
(as u can see it should be something after %9)  
or  
2 -  
[http://gancxadebebi.ge/ka/განცხადებები?mc=mini+aipadi&search=ძიებ��%9](http://gancxadebebi.ge/ka/%E1%83%92%E1%83%90%E1%83%9C%E1%83%AA%E1%83%AE%E1%83%90%E1%83%93%E1%83%94%E1%83%91%E1%83%94%E1%83%91%E1%83%98?mc=mini+aipadi&search=%E1%83%AB%E1%83%98%E1%83%94%E1%83%91%E1%83%259)

I succeeded to deal when there is no get parameters (first url above)  
and make in that case a redirection to /  
when this happen, this line is added to nginx error.log  
2013/09/24 00:46:53 [alert] 63547#0: \*19359227 pcre\_exec() failed: -10  
on “/ka/განცხადებებ�” using “”, client: aa.bb.cc.dd, server:  
gancxadebebi.ge, request: “GET  
/ka/%E1%83%92%E1%83%90%E1%83%9C%E1%83%AA%E1%83%AE%E1%83%90%E1%83%93%E1%83%94%E1%83%91%E1%83%94%E1%83%91%E1%8  
HTTP/1.1”, host: “gancxadebebi.ge”

but for second url, which have get parameter truncated, I can not handle  
that which generate a 400 bad request page.  
such request added this line in nginx access.log  
aa.bb.cc.dd - - [24/Sep/2013:00:48:47 +0200] “GET  
/ka/%E1%83%92%E1%83%90%E1%83%9C%E1%83%AA%E1%83%AE%E1%83%90%E1%83%93%E1%83%94%E1%83%91%E1%83%94%E1%83%91%E1%83%98?mc=mini+aipadi&search=%E1%83%AB%E1%83%98%E1%83%94%E1%83%91%E1%83%  
HTTP/1.1” 400 5 “-” “Mozilla/5.0 (X11; Linux x86\_64) AppleWebKit/537.36  
(KHTML, like Gecko) Chrome/29.0.1547.76 Safari/537.36”

does this mean that nginx accepted the request and then rails coudnt  
resolve it ?

I don’t know if problem come from rails or from nginx. For first url, I  
solved it in nginx conf  
here part of my conf

```
access_log /var/log/nginx/gancx.access.log;
error_log /var/log/nginx/gancx.error.log;

client_body_in_file_only clean;
client_body_buffer_size 32K;
charset UTF-8;
source_charset UTF-8;
client_max_body_size 300M;

error_page 400 404 = @notfound;
error_page 500 502 504 = @server_error;
error_page 503 = @maintenance;

location @notfound {
  rewrite ^(.*)$ $scheme://$host permanent;
}

location @server_error {
    rewrite ^(.*)$ $scheme://$host permanent;
}

location @maintenance {
    rewrite ^(.*)$ $scheme://$host permanent;
}
sendfile on;
send_timeout 300s;

location / {
    proxy_pass http://gancx;
    proxy_redirect off;

    proxy_set_header Host $host;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    charset UTF-8;
    client_max_body_size 7m;
    proxy_buffer_size 4k;
    proxy_buffers 4 32k;
    proxy_busy_buffers_size 64k;
    proxy_temp_file_write_size 64k;
}

```

thanks for your help