I want to make a reverse proxy for slideshare. The configuration is as follows, but it always fails. {Code...} The following is the result of my proxy access. {Code...} Error 301 is reported. I don’t know the reason.

httproxy - nginx reverse proxy problem-PHP Chinese Network Q&A

I want to create a reverse proxy for slideshare. The configuration is as follows, but it always fails.

 4     error_log /data/logs/slideshare.error.log;
  5     server_name ssk.timger.info;
  6     proxy_cache_key "$scheme://$host$request_uri/slideshare";
  7     proxy_cache cache_one;
  8     proxy_max_temp_file_size 4m;
  9
 10     location / {
 11         proxy_cache_valid  200 304 3h;
 12         #proxy_cache_valid 301 3d;
 13         proxy_cache_valid any 10s;
 14         proxy_set_header   X-Real-IP  $remote_addr;
 15         proxy_set_header   X-Forwarded-For $proxy_add_x_forwarded_for;
 16         #向后端传递访客ip
 17
 18         proxy_set_header   Referer http://www.slideshare.net/;
 19         #强制定义Referer，程序验证判断会用到
 20
 21         proxy_set_header   Host $host;
 22
 23         proxy_pass http://www.slideshare.net/;
 24
 25         proxy_redirect default;
 26         proxy_redirect http://www.slideshare.net/ /;
 27
 28
 29         proxy_connect_timeout   60;

The following is the result of my visit after proxy

HTTP/1.1 301 Moved Permanently
Server: nginx/1.2.1
Date: Sat, 01 Feb 2014 14:02:43 GMT
Content-Type: text/html
Content-Length: 178
Location: http://ssk.timger.info/
Connection: keep-alive
P3P: CP="OTI DSP COR CUR ADM DEV PSD IVD CONo OUR IND"
Accept-Ranges: bytes
X-Varnish: 1736312165
Age: 0
Via: 1.1 varnish
Set-Cookie: SERVERID=r3|Uuz+h|Uuz+h; path=/

<html>
<head><title>301 Moved Permanently</title></head>
<body bgcolor="white">
<center><h1>301 Moved Permanently</h1></center>
<hr><center>nginx</center>
</body>
</html>

Error 301 I don’t know the reason