Class: EventMachine::Protocols::HttpClient2
- Inherits:
-
Connection
- Object
- Connection
- EventMachine::Protocols::HttpClient2
- Includes:
- LineText2
- Defined in:
- lib/protocols/httpcli2.rb
Overview
Example
EM.run{
include EM::Protocols
conn = HttpClient2.connect 'google.com', 80
req = conn.get('/')
req.callback{
p(req.content)
}
Defined Under Namespace
Classes: Request
Constant Summary
Constants included from LineText2
LineText2::MaxBinaryLength, LineText2::MaxLineLength
Instance Attribute Summary
Attributes inherited from Connection
Class Method Summary collapse
-
.connect(*args) ⇒ Object
Make a connection to a remote HTTP server.
Instance Method Summary collapse
- #connection_completed ⇒ Object
- #get(args) ⇒ Object
-
#pop_request ⇒ Object
– Called by a Request object when it completes.
- #post(args) ⇒ Object
- #post_init ⇒ Object
- #receive_binary_data(text) ⇒ Object
- #receive_line(ln) ⇒ Object
- #request(args) ⇒ Object
-
#set_default_host_header(host, port, ssl) ⇒ Object
– Compute and remember a string to be used as the host header in HTTP requests unless the user overrides it with an argument to #request.
-
#unbind ⇒ Object
– All pending requests, if any, must fail.
Methods included from LineText2
#receive_data, #receive_end_of_binary_data, #set_binary_mode, #set_delimiter, #set_line_mode, #set_text_mode
Methods inherited from Connection
#associate_callback_target, #close_connection, #close_connection_after_writing, #comm_inactivity_timeout, #comm_inactivity_timeout=, #detach, #error?, #get_outbound_data_size, #get_peername, #get_pid, #get_sockname, #get_status, #initialize, new, #receive_data, #reconnect, #send_data, #send_datagram, #send_file_data, #set_comm_inactivity_timeout, #start_tls, #stream_file_data
Constructor Details
This class inherits a constructor from EventMachine::Connection
Class Method Details
.connect(*args) ⇒ Object
Make a connection to a remote HTTP server. Can take either a pair of arguments (which will be interpreted as a hostname/ip-address and a port), or a hash. If the arguments are a hash, then supported values include:
:host => a hostname or ip-address;
:port => a port number
– TODO, support optional encryption arguments like :ssl
228 229 230 231 232 233 234 235 236 237 238 239 240 |
# File 'lib/protocols/httpcli2.rb', line 228 def self.connect *args if args.length == 2 args = {:host=>args[0], :port=>args[1]} else args = args.first end h,prt,ssl = args[:host], Integer(args[:port]), (args[:tls] || args[:ssl]) conn = EM.connect( h, prt, self ) conn.start_tls if ssl conn.set_default_host_header( h, prt, ssl ) conn end |
Instance Method Details
#connection_completed ⇒ Object
261 262 263 264 |
# File 'lib/protocols/httpcli2.rb', line 261 def connection_completed super @connected.succeed end |
#get(args) ⇒ Object
285 286 287 288 289 290 291 |
# File 'lib/protocols/httpcli2.rb', line 285 def get args if args.is_a?(String) args = {:uri=>args} end args[:verb] = "GET" request args end |
#pop_request ⇒ Object
– Called by a Request object when it completes.
330 331 332 |
# File 'lib/protocols/httpcli2.rb', line 330 def pop_request @requests.pop end |
#post(args) ⇒ Object
293 294 295 296 297 298 299 |
# File 'lib/protocols/httpcli2.rb', line 293 def post args if args.is_a?(String) args = {:uri=>args} end args[:verb] = "POST" request args end |
#post_init ⇒ Object
256 257 258 259 |
# File 'lib/protocols/httpcli2.rb', line 256 def post_init super @connected = EM::DefaultDeferrable.new end |
#receive_binary_data(text) ⇒ Object
323 324 325 |
# File 'lib/protocols/httpcli2.rb', line 323 def receive_binary_data text @requests.last.receive_text text end |
#receive_line(ln) ⇒ Object
314 315 316 317 318 319 320 321 322 |
# File 'lib/protocols/httpcli2.rb', line 314 def receive_line ln if req = @requests.last req.receive_line ln else p "??????????" p ln end end |
#request(args) ⇒ Object
301 302 303 304 305 306 307 308 309 310 311 312 |
# File 'lib/protocols/httpcli2.rb', line 301 def request args args[:host_header] = @host_header unless args.has_key?(:host_header) args[:authorization] = @authorization unless args.has_key?(:authorization) r = Request.new self, args if @closed r.fail else (@requests ||= []).unshift r @connected.callback {r.send_request} end r end |
#set_default_host_header(host, port, ssl) ⇒ Object
– Compute and remember a string to be used as the host header in HTTP requests unless the user overrides it with an argument to #request.
247 248 249 250 251 252 253 |
# File 'lib/protocols/httpcli2.rb', line 247 def set_default_host_header host, port, ssl if (ssl and port != 443) or (!ssl and port != 80) @host_header = "#{host}:#{port}" else @host_header = host end end |
#unbind ⇒ Object
– All pending requests, if any, must fail. We might come here without ever passing through connection_completed in case we can’t connect to the server. We’ll also get here when the connection closes (either because the server closes it, or we close it due to detecting an internal error or security violation). In either case, run down all pending requests, if any, and signal failure on them.
Set and remember a flag (@closed) so we can immediately fail any subsequent requests.
278 279 280 281 282 |
# File 'lib/protocols/httpcli2.rb', line 278 def unbind super @closed = true (@requests || []).each {|r| r.fail} end |