gistfile1.txt

$ curl -v https://www.douban.com/service/auth2/token
* About to connect() to www.douban.com port 443 (#0)
*   Trying 211.147.4.31... connected
* successfully set certificate verify locations:
*   CAfile: none
  CApath: /gentoo/etc/ssl/certs
* SSLv3, TLS handshake, Client hello (1):
* SSLv3, TLS handshake, Server hello (2):
* SSLv3, TLS handshake, CERT (11):
* SSLv3, TLS handshake, Server key exchange (12):
* SSLv3, TLS handshake, Server finished (14):
* SSLv3, TLS handshake, Client key exchange (16):
* SSLv3, TLS change cipher, Client hello (1):
* SSLv3, TLS handshake, Finished (20):
* SSLv3, TLS change cipher, Client hello (1):
* SSLv3, TLS handshake, Finished (20):
* SSL connection using ECDHE-RSA-AES256-SHA
* Server certificate:
* 	 subject: serialNumber=BwamABOJwbswekdk3uyPGoFaNxMX1nCa; C=CN; ST=Beijing; L=Beijing; O=Douban Inc.; OU=Technology Department; CN=*.douban.com
* 	 start date: 2011-06-08 21:27:24 GMT
* 	 expire date: 2013-06-11 00:44:13 GMT
* 	 subjectAltName: www.douban.com matched
* 	 issuer: C=US; O=GeoTrust, Inc.; CN=GeoTrust SSL CA
* 	 SSL certificate verify ok.
> GET /service/auth2/token HTTP/1.1
> User-Agent: curl/7.23.1 (x86_64-apple-darwin11) libcurl/7.23.1 OpenSSL/1.0.0e zlib/1.2.5.1
> Host: www.douban.com
> Accept: */*
> 
< HTTP/1.1 400 Bad Request
< Server: nginx
< Content-Type: application/json; charset=utf-8
< Content-Length: 101
< Connection: keep-alive
< Keep-Alive: timeout=10
< Date: Wed, 08 Aug 2012 06:00:09 GMT
< Expires: -1
< 
* Connection #0 to host www.douban.com left intact
{"msg":"required_parameter_is_missing: client_id","code":113,"request":"GET \/service\/auth2\/token"}* Closing connection #0
* SSLv3, TLS alert, Client hello (1):