# Long URLs cause nginx to hang **URL:** \ **Category:** NGINX\ **Created:** [May 6, 2011, 7:17pm UTC](https://www.ruby-forum.com/t/long-urls-cause-nginx-to-hang/206662 "2011-05-06T19:17:42Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![dubstep](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/cdc98d/32.png) [@dubstep](https://www.ruby-forum.com/u/dubstep)\ **Post date:** [May 6, 2011, 7:17pm UTC](https://www.ruby-forum.com/t/long-urls-cause-nginx-to-hang/206662/1 "2011-05-06T19:17:42Z")
Hey everyone, I’m having strange issues with _very_ long url’s under Nginx 1.0.1 (also tested under 0.8.54). Certain URL’s with a large number of GET parameters are failing. I wrote a quick test script which only prints 1 line (php), and added a massive GET parameter: [https://test/test.php?blah=aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa](https://test/test.php?blah=aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) This causes Nginx to hang indefinitely, the client receives absolutely no data (verified by tcpdump). Though, if I cut the parameter in half, it loads instantly. Is there a configuration directive I need to tweak in order to handle these massive URL’s? Thanks! Ben Posted at Nginx Forum: > **[Long URLs cause nginx to hang](https://forum.nginx.org/read.php?2,196131,196131#msg-196131)** > > Hey everyone, I'm having strange issues with \_very\_ long url's under Nginx 1.0.1 (also tested under 0.8.54). Certain URL's with a large number of GET parameters are failing. I wrote a quick test script which only prints 1 line (php), and added a... ---
**Author:** ![uid\_b](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/u/c6cbf5/32.png) [@uid\_b](https://www.ruby-forum.com/u/uid_b)\ **Post date:** [May 6, 2011, 7:38pm UTC](https://www.ruby-forum.com/t/long-urls-cause-nginx-to-hang/206662/2 "2011-05-06T19:38:03Z")
update: to rule out fastcgi/php I ran the same test against a basic HTML file with the same GET parameter, same problem. Posted at Nginx Forum: > **[Re: Long URLs cause nginx to hang](https://forum.nginx.org/read.php?2,196131,196138#msg-196138)** > > Hey everyone, I'm having strange issues with \_very\_ long url's under Nginx 1.0.1 (also tested under 0.8.54). Certain URL's with a large number of GET parameters are failing. I wrote a quick test script which only prints 1 line (php), and added a... ---
**Author:** ![uid\_b](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/u/c6cbf5/32.png) [@uid\_b](https://www.ruby-forum.com/u/uid_b)\ **Post date:** [May 6, 2011, 7:56pm UTC](https://www.ruby-forum.com/t/long-urls-cause-nginx-to-hang/206662/3 "2011-05-06T19:56:01Z")
On Fri, May 06, 2011 at 01:37:17PM -0400, uid\_b wrote: > update: to rule out fastcgi/php I ran the same test against a basic HTML > file with the same GET parameter, same problem. Could you create a debug log of the HTML files request ? > **[A debugging log](http://nginx.org/en/docs/debugging_log.html)** – Igor S. ---
**Author:** ![uid\_b](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/u/c6cbf5/32.png) [@uid\_b](https://www.ruby-forum.com/u/uid_b)\ **Post date:** [May 6, 2011, 9:00pm UTC](https://www.ruby-forum.com/t/long-urls-cause-nginx-to-hang/206662/4 "2011-05-06T21:00:51Z")
On Fri, May 06, 2011 at 02:56:10PM -0400, uid\_b wrote: > I get 2 different outputs, depending on whether the connection is SSL or > not > 2011/05/06 12:54:09 [debug] 13267#0: _69 http header: “User-Agent: > Mozilla/5.0 (X11; Linux x86\_64; rv:2.0.1) Gecko/20100101 Firefox/4.0.1” > 2011/05/06 12:54:09 [debug] 13267#0: 69 http header: "Accept: > text/html,application/xhtml+xml,application/xml;q=0.9,/_;q=0.8" Did you try other browser ? – Igor S. ---
**Author:** ![uid\_b](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/u/c6cbf5/32.png) [@uid\_b](https://www.ruby-forum.com/u/uid_b)\ **Post date:** [May 6, 2011, 9:15pm UTC](https://www.ruby-forum.com/t/long-urls-cause-nginx-to-hang/206662/5 "2011-05-06T21:15:04Z")
Igor S. Wrote: ---
**Author:** ![uid\_b](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/u/c6cbf5/32.png) [@uid\_b](https://www.ruby-forum.com/u/uid_b)\ **Post date:** [May 6, 2011, 8:56pm UTC](https://www.ruby-forum.com/t/long-urls-cause-nginx-to-hang/206662/6 "2011-05-06T20:56:31Z")
I get 2 different outputs, depending on whether the connection is SSL or not Non-SSL: 2011/05/06 12:52:44 [debug] 13267#0: \*48 accept: 192.168.10.21 fd:3 2011/05/06 12:52:44 [debug] 13267#0: \*48 event timer add: 3: 120000:1304708084457 2011/05/06 12:52:44 [debug] 13267#0: \*48 epoll add event: fd:3 op:1 ev:80000001 SSL: 2011/05/06 12:48:49 [debug] 12804#0: \*16 accept: 192.168.10.21 fd:3 2011/05/06 12:48:49 [debug] 12804#0: \*16 event timer add: 3: 120000:1304707849612 2011/05/06 12:48:49 [debug] 12804#0: \*16 epoll add event: fd:3 op:1 ev:80000001 2011/05/06 12:48:49 [debug] 12804#0: \*16 malloc: 0000000001440680:1296 2011/05/06 12:48:49 [debug] 12804#0: \*16 posix\_memalign: 000000000138BEB0:256 @16 2011/05/06 12:48:49 [debug] 12804#0: \*16 malloc: 0000000001229710:1024 2011/05/06 12:48:49 [debug] 12804#0: \*16 posix\_memalign: 000000000151E9E0:4096 @16 2011/05/06 12:48:49 [debug] 12804#0: \*16 http check ssl handshake 2011/05/06 12:48:49 [debug] 12804#0: \*16 https ssl handshake: 0x16 2011/05/06 12:48:49 [debug] 12804#0: \*16 SSL server name: “seismo” 2011/05/06 12:48:49 [debug] 12804#0: \*16 SSL\_do\_handshake: -1 2011/05/06 12:48:49 [debug] 12804#0: \*16 SSL\_get\_error: 2 2011/05/06 12:48:49 [debug] 12804#0: \*16 SSL handshake handler: 0 2011/05/06 12:48:49 [debug] 12804#0: \*16 SSL\_do\_handshake: 1 2011/05/06 12:48:49 [debug] 12804#0: \*16 SSL: TLSv1, cipher: “DHE-RSA-AES256-SHA SSLv3 Kx=DH Au=RSA Enc=AES(256) Mac=SHA1” 2011/05/06 12:48:49 [debug] 12804#0: \*16 http process request line 2011/05/06 12:48:49 [debug] 12804#0: \*16 SSL\_read: -1 2011/05/06 12:48:49 [debug] 12804#0: \*16 SSL\_get\_error: 2 If I remove the massive GET parameter: 2011/05/06 12:54:09 [debug] 13267#0: \*69 accept: 192.168.10.21 fd:17 2011/05/06 12:54:09 [debug] 13267#0: \*69 event timer add: 17: 120000:1304708169332 2011/05/06 12:54:09 [debug] 13267#0: \*69 epoll add event: fd:17 op:1 ev:80000001 2011/05/06 12:54:09 [debug] 13267#0: \*69 malloc: 00000000019EEE70:1296 2011/05/06 12:54:09 [debug] 13267#0: \*69 posix\_memalign: 0000000001B9B460:256 @16 2011/05/06 12:54:09 [debug] 13267#0: \*69 malloc: 00000000019E0710:1024 2011/05/06 12:54:09 [debug] 13267#0: \*69 posix\_memalign: 0000000001C0AA40:4096 @16 2011/05/06 12:54:09 [debug] 13267#0: \*69 http process request line 2011/05/06 12:54:09 [debug] 13267#0: \*69 recv: fd:17 645 of 1024 2011/05/06 12:54:09 [debug] 13267#0: \*69 http request line: “GET /test.html HTTP/1.1” 2011/05/06 12:54:09 [debug] 13267#0: \*69 http uri: “/test.html” 2011/05/06 12:54:09 [debug] 13267#0: \*69 http args: “” 2011/05/06 12:54:09 [debug] 13267#0: \*69 http exten: “html” 2011/05/06 12:54:09 [debug] 13267#0: \*69 http process request header line 2011/05/06 12:54:09 [debug] 13267#0: \*69 http header: “Host: seismo” 2011/05/06 12:54:09 [debug] 13267#0: _69 http header: “User-Agent: Mozilla/5.0 (X11; Linux x86\_64; rv:2.0.1) Gecko/20100101 Firefox/4.0.1” 2011/05/06 12:54:09 [debug] 13267#0: 69 http header: "Accept: text/html,application/xhtml+xml,application/xml;q=0.9,/_;q=0.8" 2011/05/06 12:54:09 [debug] 13267#0: \*69 http header: “Accept-Language: en-us,en;q=0.5” 2011/05/06 12:54:09 [debug] 13267#0: \*69 http header: “Accept-Encoding: gzip, deflate” 2011/05/06 12:54:09 [debug] 13267#0: _69 http header: "Accept-Charset: ISO-8859-1,utf-8;q=0.7,_;q=0.7" 2011/05/06 12:54:09 [debug] 13267#0: \*69 http header: “Keep-Alive: 115” 2011/05/06 12:54:09 [debug] 13267#0: \*69 http header: “Connection: keep-alive” 2011/05/06 12:54:09 [debug] 13267#0: \*69 http header: “Cookie: PHPSESSID=l3a89kpj6j0es6qbkkf1nd1p80; \_\_utma=16576436.82209771.1304707931.1304707931.1304707931.1; \_\_utmb=16576436.2.10.1304707931; \_\_utmc=16576436; \_\_utmz=16576436.1304707931.1.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none)” 2011/05/06 12:54:09 [debug] 13267#0: \*69 http header: “If-Modified-Since: Fri, 06 May 2011 18:36:06 GMT” 2011/05/06 12:54:09 [debug] 13267#0: \*69 http header done 2011/05/06 12:54:09 [debug] 13267#0: \*69 event timer del: 17: 1304708169332 2011/05/06 12:54:09 [debug] 13267#0: \*69 generic phase: 0 2011/05/06 12:54:09 [debug] 13267#0: \*69 rewrite phase: 1 2011/05/06 12:54:09 [debug] 13267#0: \*69 test location: “/” 2011/05/06 12:54:09 [debug] 13267#0: \*69 test location: ~ “.php” 2011/05/06 12:54:09 [debug] 13267#0: \*69 test location: ~ “/.ht” 2011/05/06 12:54:09 [debug] 13267#0: \*69 using configuration “/sparkle” 2011/05/06 12:54:09 [debug] 13267#0: \*69 http cl:-1 max:10485760 2011/05/06 12:54:09 [debug] 13267#0: \*69 rewrite phase: 3 2011/05/06 12:54:09 [debug] 13267#0: \*69 post rewrite phase: 4 2011/05/06 12:54:09 [debug] 13267#0: \*69 generic phase: 5 2011/05/06 12:54:09 [debug] 13267#0: \*69 generic phase: 6 2011/05/06 12:54:09 [debug] 13267#0: \*69 generic phase: 7 2011/05/06 12:54:09 [debug] 13267#0: \*69 access phase: 8 2011/05/06 12:54:09 [debug] 13267#0: \*69 access phase: 9 2011/05/06 12:54:09 [debug] 13267#0: \*69 post access phase: 10 2011/05/06 12:54:09 [debug] 13267#0: \*69 try files phase: 11 2011/05/06 12:54:09 [debug] 13267#0: \*69 http script var: “/test.html” 2011/05/06 12:54:09 [debug] 13267#0: \*69 try to use file: “/test.html” “/var/www/test.html” 2011/05/06 12:54:09 [debug] 13267#0: \*69 try file uri: “/test.html” 2011/05/06 12:54:09 [debug] 13267#0: \*69 content phase: 12 2011/05/06 12:54:09 [debug] 13267#0: \*69 content phase: 13 2011/05/06 12:54:09 [debug] 13267#0: \*69 content phase: 14 2011/05/06 12:54:09 [debug] 13267#0: \*69 content phase: 15 2011/05/06 12:54:09 [debug] 13267#0: \*69 content phase: 16 2011/05/06 12:54:09 [debug] 13267#0: \*69 http filename: “/var/www/test.html” 2011/05/06 12:54:09 [debug] 13267#0: \*69 add cleanup: 0000000001C0B638 2011/05/06 12:54:09 [debug] 13267#0: \*69 http static fd: 18 2011/05/06 12:54:09 [debug] 13267#0: \*69 http set discard body 2011/05/06 12:54:09 [debug] 13267#0: \*69 http ims:1304706966 lm:1304706966 2011/05/06 12:54:09 [debug] 13267#0: \*69 HTTP/1.1 304 Not Modified Server: nginx Date: Fri, 06 May 2011 18:54:09 GMT Last-Modified: Fri, 06 May 2011 18:36:06 GMT Connection: keep-alive 2011/05/06 12:54:09 [debug] 13267#0: \*69 write new buf t:1 f:0 0000000001C0B7D0, pos 0000000001C0B7D0, size: 151 file: 0, size: 0 2011/05/06 12:54:09 [debug] 13267#0: \*69 http write filter: l:1 f:0 s:151 2011/05/06 12:54:09 [debug] 13267#0: \*69 http write filter limit 0 2011/05/06 12:54:09 [debug] 13267#0: \*69 writev: 151 2011/05/06 12:54:09 [debug] 13267#0: \*69 http write filter 0000000000000000 2011/05/06 12:54:09 [debug] 13267#0: \*69 http finalize request: 0, “/sparkle/test.html?” a:1, c:1 2011/05/06 12:54:09 [debug] 13267#0: \*69 set http keepalive handler 2011/05/06 12:54:09 [debug] 13267#0: \*69 http close request 2011/05/06 12:54:09 [debug] 13267#0: \*69 http log handler 2011/05/06 12:54:09 [debug] 13267#0: \*69 run cleanup: 0000000001C0B638 2011/05/06 12:54:09 [debug] 13267#0: \*69 file cleanup: fd:18 2011/05/06 12:54:09 [debug] 13267#0: \*69 free: 0000000001C0AA40, unused: 273 2011/05/06 12:54:09 [debug] 13267#0: \*69 event timer add: 17: 2000:1304708051332 2011/05/06 12:54:09 [debug] 13267#0: \*69 free: 00000000019EEE70 2011/05/06 12:54:09 [debug] 13267#0: \*69 free: 00000000019E0710 2011/05/06 12:54:09 [debug] 13267#0: \*69 hc free: 0000000000000000 0 2011/05/06 12:54:09 [debug] 13267#0: \*69 hc busy: 0000000000000000 0 2011/05/06 12:54:09 [debug] 13267#0: \*69 tcp\_nodelay 2011/05/06 12:54:09 [debug] 13267#0: \*69 reusable connection: 1 2011/05/06 12:54:09 [debug] 13267#0: \*69 post event 00000000019EE768 2011/05/06 12:54:09 [debug] 13267#0: \*69 delete posted event 00000000019EE768 2011/05/06 12:54:09 [debug] 13267#0: \*69 http keepalive handler 2011/05/06 12:54:09 [debug] 13267#0: \*69 malloc: 00000000019E0710:1024 2011/05/06 12:54:09 [debug] 13267#0: \*69 recv: fd:17 -1 of 1024 2011/05/06 12:54:09 [debug] 13267#0: \*69 recv() not ready (11: Resource temporarily unavailable) 2011/05/06 12:54:11 [debug] 13267#0: \*69 event timer del: 17: 1304708051332 2011/05/06 12:54:11 [debug] 13267#0: \*69 http keepalive handler 2011/05/06 12:54:11 [debug] 13267#0: \*69 close http connection: 17 2011/05/06 12:54:11 [debug] 13267#0: \*69 reusable connection: 0 2011/05/06 12:54:11 [debug] 13267#0: \*69 free: 00000000019E0710 2011/05/06 12:54:11 [debug] 13267#0: \*69 free: 0000000000000000 2011/05/06 12:54:11 [debug] 13267#0: \*69 free: 0000000001B9AC50, unused: 8 2011/05/06 12:54:11 [debug] 13267#0: \*69 free: 0000000001B9B460, unused: 128 Posted at Nginx Forum: > **[Re: Long URLs cause nginx to hang](https://forum.nginx.org/read.php?2,196131,196167#msg-196167)** > > Hey everyone, I'm having strange issues with \_very\_ long url's under Nginx 1.0.1 (also tested under 0.8.54). Certain URL's with a large number of GET parameters are failing. I wrote a quick test script which only prints 1 line (php), and added a... ---
**Author:** ![uid\_b](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/u/c6cbf5/32.png) [@uid\_b](https://www.ruby-forum.com/u/uid_b)\ **Post date:** [May 6, 2011, 9:40pm UTC](https://www.ruby-forum.com/t/long-urls-cause-nginx-to-hang/206662/7 "2011-05-06T21:40:26Z")
This appears to be an issue with our VPN, I have no idea why everything works except for massive URL’s but I don’t think it’s related to nginx in any way. Thanks for your help! Posted at Nginx Forum: > **[Re: Long URLs cause nginx to hang](https://forum.nginx.org/read.php?2,196131,196177#msg-196177)** > > Hey everyone, I'm having strange issues with \_very\_ long url's under Nginx 1.0.1 (also tested under 0.8.54). Certain URL's with a large number of GET parameters are failing. I wrote a quick test script which only prints 1 line (php), and added a... ---
**Author:** ![uid\_b](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/u/c6cbf5/32.png) [@uid\_b](https://www.ruby-forum.com/u/uid_b)\ **Post date:** [May 6, 2011, 9:52pm UTC](https://www.ruby-forum.com/t/long-urls-cause-nginx-to-hang/206662/8 "2011-05-06T21:52:09Z")
On Fri, May 06, 2011 at 03:39:50PM -0400, uid\_b wrote: > This appears to be an issue with our VPN, I have no idea why everything > works except for massive URL’s but I don’t think it’s related to nginx > in any way. Try to search for “path mtu discovery vpn”. – Igor S. ---
**Author:** ![uid\_b](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/u/c6cbf5/32.png) [@uid\_b](https://www.ruby-forum.com/u/uid_b)\ **Post date:** [May 6, 2011, 9:28pm UTC](https://www.ruby-forum.com/t/long-urls-cause-nginx-to-hang/206662/9 "2011-05-06T21:28:02Z")
On Fri, May 06, 2011 at 02:56:10PM -0400, uid\_b wrote: > I get 2 different outputs, depending on whether the connection is SSL or > not > > Non-SSL: > 2011/05/06 12:52:44 [debug] 13267#0: \*48 accept: 192.168.10.21 fd:3 > 2011/05/06 12:52:44 [debug] 13267#0: \*48 event timer add: 3: > 120000:1304708084457 > 2011/05/06 12:52:44 [debug] 13267#0: \*48 epoll add event: fd:3 op:1 > ev:80000001 nginx does not receive any data and it should close connection after 120s. Did you run tcpdump on server side ? – Igor S.