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I have found this little script in PHP that send a simple request to twitter for update your status, I have tried this: http://pratham.name/twitter-php-script-without-curl.html, and it work. Now, I want send this request with netcat, but this doesn't work, why?
I send request in this way:
echo -e $head | nc twitter.com 80
The $head are my header that I have tried with also PHP, so it are right.
Anyone know how I can make this? Thanks to all.
edit.
head="POST http://twitter.com/statuses/update.json HTTP/1.1\r\n
Host: twitter.com\r\n
Authorization: Basic myname:passwordinbs64\r\n
Content-type: application/x-www-form-urlencoded\r\n
Content-length: 10\r\n
Connection: Close\r\n\r\n
status=mymessage";
echo -e $head | nc twitter.com 80
237
Just type in your browser http://localhost:64738 and see. Extension: After the GET header write only the path part of the request. The hostname from which you want to get data belongs to a Host: header as you can see in my examples.
Majority of the traffic over the internet is HTTP Traffic. There is a HTTP Client which wants some data from HTTP Server, so it creates a HTTP Request Message in the protocol understandable by the server and sends it.
The Netcat ( nc ) command is a command-line utility for reading and writing data between two computer networks. The communication happens using either TCP or UDP. The command differs depending on the system ( netcat , nc , ncat , and others).
The data you send is not correct. Here's the command I'm executing:
$ head="POST /statuses/update.json HTTP/1.1\r\n Host: twitter.com\r\n Authorization: Basic myname:passwordinbs64\r\n Content-type: application/x-www-form-urlencoded\r\n Content-length: 10\r\n Connection: Close\r\n\r\n status=mymessage"; echo $head | nc twitter.com 80 HTTP/1.1 400 Bad Request Date: Tue, 29 Jun 2010 10:19:38 GMT Server: Apache Vary: Accept-Encoding Content-Length: 226 Connection: close Content-Type: text/html; charset=iso-8859-1 <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN"> <html><head> <title>400 Bad Request</title> </head><body> <h1>Bad Request</h1> <p>Your browser sent a request that this server could not understand.<br /> </p> </body></html> I'm running a tcpdump in parallel and here is what it shows me:
0x0020: 5018 ffff 671f 0000 504f 5354 2068 7474 P...g...POST.htt 0x0030: 703a 2f2f 7477 6974 7465 722e 636f 6d2f p://twitter.com/ 0x0040: 7374 6174 7573 6573 2f75 7064 6174 652e statuses/update. 0x0050: 6a73 6f6e 2048 5454 502f 312e 310d 0a20 json.HTTP/1.1... 0x0060: 486f 7374 3a20 7477 6974 7465 722e 636f Host:.twitter.co 0x0070: 6d0d 0a20 4175 7468 6f72 697a 6174 696f m...Authorizatio 0x0080: 6e3a 2042 6173 6963 206d 796e 616d 653a n:.Basic.myname: 0x0090: 7061 7373 776f 7264 696e 6273 3634 0d0a passwordinbs64.. 0x00a0: 2043 6f6e 7465 6e74 2d74 7970 653a 2061 .Content-type:.a 0x00b0: 7070 6c69 6361 7469 6f6e 2f78 2d77 7777 pplication/x-www 0x00c0: 2d66 6f72 6d2d 7572 6c65 6e63 6f64 6564 -form-urlencoded 0x00d0: 0d0a 2043 6f6e 7465 6e74 2d6c 656e 6774 ...Content-lengt 0x00e0: 683a 2031 300d 0a20 436f 6e6e 6563 7469 h:.10...Connecti 0x00f0: 6f6e 3a20 436c 6f73 650d 0a0d 0a20 7374 on:.Close.....st 0x0100: 6174 7573 3d6d 796d 6573 7361 6765 0a atus=mymessage. Do you see the mistake? At each line break are three characters, but there should be only two. This happens because you have a real line break in your variable definition that becomes a space in the shell. E.g.
$ head="line1 line2" ; echo $head line1 line2 Try writing it all in one line instead.
$ head="POST /statuses/update.json HTTP/1.1\r\nHost: twitter.com\r\nAuthorization: Basic myname:passwordinbs64\r\nContent-type: application/x-www-form-urlencoded\r\nContent-length: 10\r\nConnection: Close\r\n\r\nstatus=mymessage" ; echo $head | nc twitter.com 80 HTTP/1.1 401 Unauthorized Date: Tue, 29 Jun 2010 10:25:43 GMT Server: hi Status: 401 Unauthorized X-Runtime: 0.00577 Content-Type: application/json; charset=utf-8 Content-Length: 63 Cache-Control: no-cache, max-age=300 Set-Cookie: k=194.145.236.196.1277807143945525; path=/; expires=Tue, 06-Jul-10 10:25:43 GMT; domain=.twitter.com Set-Cookie: guest_id=1277807143950191; path=/; expires=Thu, 29 Jul 2010 10:25:43 GMT Set-Cookie: _twitter_sess=BAh7CDoPY3JlYXRlZF9hdGwrCBOsPYMpAToHaWQiJWQzZDkxNTg2MTY3OTFk%250AMzg5OTUyNWFhZGZlZDY0YjJmIgpmbGFzaElDOidBY3Rpb25Db250cm9sbGVy%250AOjpGbGFzaDo6Rmxhc2hIYXNoewAGOgpAdXNlZHsA--e95d14c755b85ff19606a0bc907c8b7a63d1b508; domain=.twitter.com; path=/ Expires: Tue, 29 Jun 2010 10:30:43 GMT Vary: Accept-Encoding Connection: close {"errors":[{"code":32,"message":"Could not authenticate you"}]} If you don't put quotes around "$head" then your formatting won't be as you (or Twitter) expect it. Also, since your variable contains newlines/carriage returns, it will probably help to suppress echo from supplying its own.
echo -ne "$head" | nc twitter.com 80
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