Returns the list of protected methods accessible to obj. If the all parameter is set to false, only those methods in the receiver will be listed.
Returns true if the set is a proper superset of the given set.
Returns true if the set is a proper subset of the given set.
Receives up to maxlen bytes from socket using recvfrom(2) after O_NONBLOCK is set for the underlying file descriptor. flags is zero or more of the MSG_ options. The first element of the results, mesg, is the data received. The second element, sender_addrinfo, contains protocol-specific address information of the sender.
When recvfrom(2) returns 0, Socket#recv_nonblock returns nil. In most cases it means the connection was closed, but for UDP connections it may mean an empty packet was received, as the underlying API makes it impossible to distinguish these two cases.
maxlen - the maximum number of bytes to receive from the socket
flags - zero or more of the MSG_ options
outbuf - destination String buffer
opts - keyword hash, supporting ‘exception: false`
# In one file, start this first require 'socket' include Socket::Constants socket = Socket.new(AF_INET, SOCK_STREAM, 0) sockaddr = Socket.sockaddr_in(2200, 'localhost') socket.bind(sockaddr) socket.listen(5) client, client_addrinfo = socket.accept begin # emulate blocking recvfrom pair = client.recvfrom_nonblock(20) rescue IO::WaitReadable IO.select([client]) retry end data = pair[0].chomp puts "I only received 20 bytes '#{data}'" sleep 1 socket.close # In another file, start this second require 'socket' include Socket::Constants socket = Socket.new(AF_INET, SOCK_STREAM, 0) sockaddr = Socket.sockaddr_in(2200, 'localhost') socket.connect(sockaddr) socket.puts "Watch this get cut short!" socket.close
Refer to Socket#recvfrom for the exceptions that may be thrown if the call to recvfrom_nonblock fails.
Socket#recvfrom_nonblock may raise any error corresponding to recvfrom(2) failure, including Errno::EWOULDBLOCK.
If the exception is Errno::EWOULDBLOCK or Errno::EAGAIN, it is extended by IO::WaitReadable. So IO::WaitReadable can be used to rescue the exceptions for retrying recvfrom_nonblock.
By specifying a keyword argument exception to false, you can indicate that recvfrom_nonblock should not raise an IO::WaitReadable exception, but return the symbol :wait_readable instead.
Receives up to maxlen bytes from udpsocket using recvfrom(2) after O_NONBLOCK is set for the underlying file descriptor. flags is zero or more of the MSG_ options. The first element of the results, mesg, is the data received. The second element, sender_inet_addr, is an array to represent the sender address.
When recvfrom(2) returns 0, Socket#recv_nonblock returns nil. In most cases it means the connection was closed, but it may also mean an empty packet was received, as the underlying API makes it impossible to distinguish these two cases.
maxlen - the number of bytes to receive from the socket
flags - zero or more of the MSG_ options
outbuf - destination String buffer
options - keyword hash, supporting ‘exception: false`
require 'socket' s1 = UDPSocket.new s1.bind("127.0.0.1", 0) s2 = UDPSocket.new s2.bind("127.0.0.1", 0) s2.connect(*s1.addr.values_at(3,1)) s1.connect(*s2.addr.values_at(3,1)) s1.send "aaa", 0 begin # emulate blocking recvfrom p s2.recvfrom_nonblock(10) #=> ["aaa", ["AF_INET", 33302, "localhost.localdomain", "127.0.0.1"]] rescue IO::WaitReadable IO.select([s2]) retry end
Refer to Socket#recvfrom for the exceptions that may be thrown if the call to recvfrom_nonblock fails.
UDPSocket#recvfrom_nonblock may raise any error corresponding to recvfrom(2) failure, including Errno::EWOULDBLOCK.
If the exception is Errno::EWOULDBLOCK or Errno::EAGAIN, it is extended by IO::WaitReadable. So IO::WaitReadable can be used to rescue the exceptions for retrying recvfrom_nonblock.
By specifying a keyword argument exception to false, you can indicate that recvfrom_nonblock should not raise an IO::WaitReadable exception, but return the symbol :wait_readable instead.
Returns the methods available to this delegate object as the union of this object’s and _getobj_ protected methods.
Program name to be emitted in error message and default banner, defaults to $0.
Mirror the Prism.profile_file API by using the serialization API.
Returns array of ProgID.
Returns ProgID if it exists. If not found, then returns nil.
tobj = WIN32OLE::Type.new('Microsoft Excel 9.0 Object Library', 'Application') puts tobj.progid # => Excel.Application.9
Returns true if a proxy server is defined, false otherwise; see Proxy Server.
Sends a PROPPATCH request to the server; returns an instance of a subclass of Net::HTTPResponse.
The request is based on the Net::HTTP::Proppatch object created from string path, string body, and initial headers hash initheader.
data = '{"userId": 1, "id": 1, "title": "delectus aut autem", "completed": false}' http = Net::HTTP.new(hostname) http.proppatch('/todos/1', data)
Sends a PROPFIND request to the server; returns an instance of a subclass of Net::HTTPResponse.
The request is based on the Net::HTTP::Propfind object created from string path, string body, and initial headers hash initheader.
data = '{"userId": 1, "id": 1, "title": "delectus aut autem", "completed": false}' http = Net::HTTP.new(hostname) http.propfind('/todos/1', data)
Returns true if a proxy server is defined, false otherwise; see Proxy Server.
Sends a PROPPATCH request to the server; returns an instance of a subclass of Net::HTTPResponse.
The request is based on the Net::HTTP::Proppatch object created from string path, string body, and initial headers hash initheader.
data = '{"userId": 1, "id": 1, "title": "delectus aut autem", "completed": false}' http = Net::HTTP.new(hostname) http.proppatch('/todos/1', data)
Sends a PROPFIND request to the server; returns an instance of a subclass of Net::HTTPResponse.
The request is based on the Net::HTTP::Propfind object created from string path, string body, and initial headers hash initheader.
data = '{"userId": 1, "id": 1, "title": "delectus aut autem", "completed": false}' http = Net::HTTP.new(hostname) http.propfind('/todos/1', data)
Change the current process’s real and effective user ID to that specified by user. Returns the new user ID. Not available on all platforms.
[Process.uid, Process.euid] #=> [0, 0] Process::UID.change_privilege(31) #=> 31 [Process.uid, Process.euid] #=> [31, 31]
Set the effective user ID, and if possible, the saved user ID of the process to the given user. Returns the new effective user ID. Not available on all platforms.
[Process.uid, Process.euid] #=> [0, 0] Process::UID.grant_privilege(31) #=> 31 [Process.uid, Process.euid] #=> [0, 31]
Get the user ID by the name. If the user is not found, ArgumentError will be raised.
Process::UID.from_name("root") #=> 0 Process::UID.from_name("nosuchuser") #=> can't find user for nosuchuser (ArgumentError)
Change the current process’s real and effective group ID to that specified by group. Returns the new group ID. Not available on all platforms.
[Process.gid, Process.egid] #=> [0, 0] Process::GID.change_privilege(33) #=> 33 [Process.gid, Process.egid] #=> [33, 33]
Set the effective group ID, and if possible, the saved group ID of the process to the given group. Returns the new effective group ID. Not available on all platforms.
[Process.gid, Process.egid] #=> [0, 0] Process::GID.grant_privilege(31) #=> 33 [Process.gid, Process.egid] #=> [0, 33]
Get the group ID by the name. If the group is not found, ArgumentError will be raised.
Process::GID.from_name("wheel") #=> 0 Process::GID.from_name("nosuchgroup") #=> can't find group for nosuchgroup (ArgumentError)
Returns true if the proxy server is defined in the environment, false otherwise; see Proxy Server.
Returns true if the proxy server is defined in the environment, false otherwise; see Proxy Server.