Module: EventedNet::HTTP::HttpEncoding

Included in:
Connection
Defined in:
lib/http/connection.rb

Overview

Methods for building HTTP requests

Constant Summary collapse

HTTP_REQUEST_HEADER = 
"%s %s HTTP/1.1\r\n"
FIELD_ENCODING = 
"%s: %s\r\n"

Instance Method Summary collapse

Instance Method Details

#encode_cookies(cookies) ⇒ Object 



100
101
102
 
# File 'lib/http/connection.rb', line 100

def encode_cookies(cookies)
  cookies.inject('') { |result, (k, v)| result << encode_field('Cookie', encode_param(k, v)) }
end

#encode_field(k, v) ⇒ Object

Encode a field in an HTTP header



88
89
90
 
# File 'lib/http/connection.rb', line 88

def encode_field(k, v)
  FIELD_ENCODING % [k, v]
end

#encode_headers(head) ⇒ Object 



92
93
94
95
96
97
98
 
# File 'lib/http/connection.rb', line 92

def encode_headers(head)
  head.inject('') do |result, (key, value)|
    # Munge keys from foo-bar-baz to Foo-Bar-Baz
    key = key.split('-').map { |k| k.capitalize }.join('-')
  result << encode_field(key, value)
  end
end

#encode_host ⇒ Object

HTTP is kind of retarded that you have to specify a Host header, but if you include port 80 then further redirects will tack on the :80 which is annoying.



69
70
71
 
# File 'lib/http/connection.rb', line 69

def encode_host
  remote_host + (remote_port.to_i != 80 ? ":#{remote_port}" : "")
end

#encode_param(k, v) ⇒ Object

URL encodes a single k=v parameter.



83
84
85
 
# File 'lib/http/connection.rb', line 83

def encode_param(k, v)
  escape(k) + "=" + escape(v)
end

#encode_query(path, query) ⇒ Object 



77
78
79
80
 
# File 'lib/http/connection.rb', line 77

def encode_query(path, query)
  return path unless query
  path + "?" + query.map { |k, v| encode_param(k, v) }.join('&')
end

#encode_request(method, path, query) ⇒ Object 



73
74
75
 
# File 'lib/http/connection.rb', line 73

def encode_request(method, path, query)
  HTTP_REQUEST_HEADER % [method.to_s.upcase, encode_query(path, query)]
end

#escape(s) ⇒ Object

Escapes a URI.



48
49
50
51
52
 
# File 'lib/http/connection.rb', line 48

def escape(s)
  s.to_s.gsub(/([^ a-zA-Z0-9_.-]+)/n) {
    '%'+$1.unpack('H2'*$1.size).join('%').upcase
  }.tr(' ', '+') 
end

#munge_header_keys(head) ⇒ Object

Map all header keys to a downcased string version



62
63
64
 
# File 'lib/http/connection.rb', line 62

def munge_header_keys(head)
  head.inject({}) { |h, (k, v)| h[k.to_s.downcase] = v; h }
end

#unescape(s) ⇒ Object

Unescapes a URI escaped string.



55
56
57
58
59
 
# File 'lib/http/connection.rb', line 55

def unescape(s)
  s.tr('+', ' ').gsub(/((?:%[0-9a-fA-F]{2})+)/n){
    [$1.delete('%')].pack('H*')
  } 
end