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Re: Common way to read/write to/from TCPSocket
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Robert Klemme
Mar 29, 2013, 10:23:31 AM3/29/13
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On 29.03.2013 08:00, yspro wrote:
> Hi there! I want to know common way to create TCPSocket, write http request and get response.
>
> My simple function:
>
> def read_from_sock(host, port)
> sock = TCPSocket.new(host, port)
>
> request = ''
> request << "GET / HTTP/1.1\r\n"
> request << "Host: #{host}\r\n"
> request << "User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.1 (KHTML, like Gecko) Chrome/21.0.1180.89 Safari/537.1\r\n"
> request << "\r\n"
>
> sock.write(request)
Try to insert a sock.close_write here.
> response = ''
>
> until sock.eof?
> response << sock.read
> end
You do not need that loop because sock.read will read until EOF.
>
> sock.close
> response
> end
>
>
>
> read_from_sock('yahoo.com', 80) returns
>
> "HTTP/1.1 301 Redirect\r\nDate: Fri, 29 Mar 2013 06:56:20 GMT\r\nConnection: close\r\nServer: YTS/1.20.13\r\nCache-Control: no-store\r\nContent-Type: text/html\r\nContent-Language: en\r\nLocation: http://www.yahoo.com/\r\nContent-Length: 211\r\n\r\n<HEAD><TITLE>Redirect</TITLE></HEAD>\n<BODY BGCOLOR=\"white\" FGCOLOR=\"black\">\n<FONT FACE=\"Helvetica,Arial\"><B>\n \"<em>http://www.yahoo.com/</em>\".<p></B></FONT>\n\n<!-- default \"Redirect\" response (301) -->\n</BODY>\n\u0000"
>
> read_from_sock('facebook.com', 80) or read_from_sock('google.com', 80) hangs forever
>
> Where is my mistake?
Why don't you use net/http?
Cheers
robert
--
remember.guy do |as, often| as.you_can - without end
http://blog.rubybestpractices.com/
> Hi there! I want to know common way to create TCPSocket, write http request and get response.
>
> My simple function:
>
> def read_from_sock(host, port)
> sock = TCPSocket.new(host, port)
>
> request = ''
> request << "GET / HTTP/1.1\r\n"
> request << "Host: #{host}\r\n"
> request << "User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.1 (KHTML, like Gecko) Chrome/21.0.1180.89 Safari/537.1\r\n"
> request << "\r\n"
>
> sock.write(request)
Try to insert a sock.close_write here.
> response = ''
>
> until sock.eof?
> response << sock.read
> end
You do not need that loop because sock.read will read until EOF.
>
> sock.close
> response
> end
>
>
>
> read_from_sock('yahoo.com', 80) returns
>
> "HTTP/1.1 301 Redirect\r\nDate: Fri, 29 Mar 2013 06:56:20 GMT\r\nConnection: close\r\nServer: YTS/1.20.13\r\nCache-Control: no-store\r\nContent-Type: text/html\r\nContent-Language: en\r\nLocation: http://www.yahoo.com/\r\nContent-Length: 211\r\n\r\n<HEAD><TITLE>Redirect</TITLE></HEAD>\n<BODY BGCOLOR=\"white\" FGCOLOR=\"black\">\n<FONT FACE=\"Helvetica,Arial\"><B>\n \"<em>http://www.yahoo.com/</em>\".<p></B></FONT>\n\n<!-- default \"Redirect\" response (301) -->\n</BODY>\n\u0000"
>
> read_from_sock('facebook.com', 80) or read_from_sock('google.com', 80) hangs forever
>
> Where is my mistake?
Why don't you use net/http?
Cheers
robert
--
remember.guy do |as, often| as.you_can - without end
http://blog.rubybestpractices.com/
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