Class: Excon::Socket
- Inherits:
-
Object
- Object
- Excon::Socket
- Extended by:
- Forwardable
- Defined in:
- lib/excon/socket.rb
Direct Known Subclasses
Instance Attribute Summary collapse
-
#data ⇒ Object
Returns the value of attribute data.
-
#remote_ip ⇒ Object
readonly
Returns the value of attribute remote_ip.
Instance Method Summary collapse
- #connect ⇒ Object
-
#initialize(data = {}) ⇒ Socket
constructor
A new instance of Socket.
- #params ⇒ Object
- #params=(new_params) ⇒ Object
- #read(max_length = nil) ⇒ Object
- #write(data) ⇒ Object
Constructor Details
#initialize(data = {}) ⇒ Socket
Returns a new instance of Socket.
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# File 'lib/excon/socket.rb', line 22 def initialize(data = {}) @data = data @read_buffer = '' @eof = false @data[:family] ||= ::Socket::Constants::AF_UNSPEC if @data[:proxy] @data[:proxy][:family] ||= ::Socket::Constants::AF_UNSPEC end connect end |
Instance Attribute Details
#data ⇒ Object
Returns the value of attribute data.
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# File 'lib/excon/socket.rb', line 6 def data @data end |
#remote_ip ⇒ Object (readonly)
Returns the value of attribute remote_ip.
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# File 'lib/excon/socket.rb', line 17 def remote_ip @remote_ip end |
Instance Method Details
#connect ⇒ Object
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# File 'lib/excon/socket.rb', line 35 def connect @socket = nil exception = nil addrinfo = if @data[:proxy] ::Socket.getaddrinfo(@data[:proxy][:host], @data[:proxy][:port], @data[:proxy][:family], ::Socket::Constants::SOCK_STREAM) else ::Socket.getaddrinfo(@data[:host], @data[:port], @data[:family], ::Socket::Constants::SOCK_STREAM) end addrinfo.each do |_, port, _, ip, a_family, s_type| @remote_ip = ip # nonblocking connect begin sockaddr = ::Socket.sockaddr_in(port, ip) socket = ::Socket.new(a_family, s_type, 0) if @data[:nonblock] socket.connect_nonblock(sockaddr) else begin Timeout.timeout(@data[:connect_timeout]) do socket.connect(sockaddr) end rescue Timeout::Error raise Excon::Errors::Timeout.new('connect timeout reached') end end @socket = socket break rescue Errno::EINPROGRESS unless IO.select(nil, [socket], nil, @data[:connect_timeout]) raise(Excon::Errors::Timeout.new("connect timeout reached")) end begin socket.connect_nonblock(sockaddr) @socket = socket break rescue Errno::EISCONN @socket = socket break rescue SystemCallError => exception socket.close next end rescue SystemCallError => exception socket.close next end end unless @socket # this will be our last encountered exception raise exception end end |
#params ⇒ Object
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# File 'lib/excon/socket.rb', line 8 def params $stderr.puts("Excon::Socket#params is deprecated use Excon::Socket#data instead (#{caller.first})") @data end |
#params=(new_params) ⇒ Object
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# File 'lib/excon/socket.rb', line 12 def params=(new_params) $stderr.puts("Excon::Socket#params= is deprecated use Excon::Socket#data= instead (#{caller.first})") @data = new_params end |
#read(max_length = nil) ⇒ Object
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# File 'lib/excon/socket.rb', line 96 def read(max_length=nil) if @eof return nil elsif @data[:nonblock] begin if max_length until @read_buffer.length >= max_length @read_buffer << @socket.read_nonblock(max_length - @read_buffer.length) end else while true @read_buffer << @socket.read_nonblock(@data[:chunk_size]) end end rescue OpenSSL::SSL::SSLError => error if error. == 'read would block' if IO.select([@socket], nil, nil, @data[:read_timeout]) retry else raise(Excon::Errors::Timeout.new("read timeout reached")) end else raise(error) end rescue Errno::EAGAIN, Errno::EWOULDBLOCK, IO::WaitReadable if IO.select([@socket], nil, nil, @data[:read_timeout]) retry else raise(Excon::Errors::Timeout.new("read timeout reached")) end rescue EOFError @eof = true end if max_length @read_buffer.slice!(0, max_length) else # read until EOFError, so return everything @read_buffer.slice!(0, @read_buffer.length) end else begin Timeout.timeout(@data[:read_timeout]) do @socket.read(max_length) end rescue Timeout::Error raise Excon::Errors::Timeout.new('read timeout reached') end end end |
#write(data) ⇒ Object
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# File 'lib/excon/socket.rb', line 146 def write(data) if @data[:nonblock] # We normally return from the return in the else block below, but # we guard that data is still something in case we get weird # values and String#[] returns nil. (This behavior has been observed # in the wild, so this is a simple defensive mechanism) while data begin # I wish that this API accepted a start position, then we wouldn't # have to slice data when there is a short write. written = @socket.write_nonblock(data) rescue OpenSSL::SSL::SSLError => error if error. == 'write would block' if IO.select(nil, [@socket], nil, @data[:write_timeout]) retry else raise(Excon::Errors::Timeout.new("write timeout reached")) end else raise(error) end rescue Errno::EAGAIN, Errno::EWOULDBLOCK, IO::WaitWritable if IO.select(nil, [@socket], nil, @data[:write_timeout]) retry else raise(Excon::Errors::Timeout.new("write timeout reached")) end else # Fast, common case. # The >= seems weird, why would it have written MORE than we # requested. But we're getting some weird behavior when @socket # is an OpenSSL socket, where it seems like it's saying it wrote # more (perhaps due to SSL packet overhead?). # # Pretty weird, but this is a simple defensive mechanism. return if written >= data.size # This takes advantage of the fact that most ruby implementations # have Copy-On-Write strings. Thusly why requesting a subrange # of data, we actually don't copy data because the new string # simply references a subrange of the original. data = data[written, data.size] end end else begin Timeout.timeout(@data[:write_timeout]) do @socket.write(data) end rescue Timeout::Error Excon::Errors::Timeout.new('write timeout reached') end end end |