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POP3
cdesc-POP3.yaml
--- !ruby/object:RI::ClassDescription attributes: - !ruby/object:RI::Attribute comment: - !ruby/struct:SM::Flow::P body: The address to connect to. name: address rw: R - !ruby/object:RI::Attribute comment: - !ruby/struct:SM::Flow::P body: Seconds to wait until a connection is opened. If the POP3 object cannot open a connection within this time, it raises a TimeoutError exception. name: open_timeout rw: RW - !ruby/object:RI::Attribute comment: - !ruby/struct:SM::Flow::P body: Seconds to wait until reading one block (by one read(1) call). If the POP3 object cannot complete a read() within this time, it raises a TimeoutError exception. name: read_timeout rw: R class_methods: - !ruby/object:RI::MethodSummary name: APOP - !ruby/object:RI::MethodSummary name: auth_only - !ruby/object:RI::MethodSummary name: certs - !ruby/object:RI::MethodSummary name: create_ssl_params - !ruby/object:RI::MethodSummary name: default_pop3_port - !ruby/object:RI::MethodSummary name: default_pop3s_port - !ruby/object:RI::MethodSummary name: default_port - !ruby/object:RI::MethodSummary name: delete_all - !ruby/object:RI::MethodSummary name: disable_ssl - !ruby/object:RI::MethodSummary name: enable_ssl - !ruby/object:RI::MethodSummary name: foreach - !ruby/object:RI::MethodSummary name: new - !ruby/object:RI::MethodSummary name: ssl_params - !ruby/object:RI::MethodSummary name: start - !ruby/object:RI::MethodSummary name: use_ssl? - !ruby/object:RI::MethodSummary name: verify comment: - !ruby/struct:SM::Flow::H level: 1 text: Net::POP3 - !ruby/struct:SM::Flow::H level: 2 text: What is This Library? - !ruby/struct:SM::Flow::P body: This library provides functionality for retrieving email via POP3, the Post Office Protocol version 3. For details of POP3, see [RFC1939] (http://www.ietf.org/rfc/rfc1939.txt). - !ruby/struct:SM::Flow::H level: 2 text: Examples - !ruby/struct:SM::Flow::H level: 3 text: Retrieving Messages - !ruby/struct:SM::Flow::P body: This example retrieves messages from the server and deletes them on the server. - !ruby/struct:SM::Flow::P body: Messages are written to files named 'inbox/1', 'inbox/2', .... Replace 'pop.example.com' with your POP3 server address, and 'YourAccount' and 'YourPassword' with the appropriate account details. - !ruby/struct:SM::Flow::VERB body: " require 'net/pop'\n\n pop = Net::POP3.new('pop.example.com')\n pop.start('YourAccount', 'YourPassword') # (1)\n if pop.mails.empty?\n puts 'No mail.'\n else\n i = 0\n pop.each_mail do |m| # or "pop.mails.each ..." # (2)\n File.open("inbox/#{i}", 'w') do |f|\n f.write m.pop\n end\n m.delete\n i += 1\n end\n puts "#{pop.mails.size} mails popped."\n end\n pop.finish # (3)\n" - !ruby/object:SM::Flow::LIST contents: - !ruby/struct:SM::Flow::LI label: "1." body: Call Net::POP3#start and start POP session. - !ruby/struct:SM::Flow::LI label: "2." body: Access messages by using POP3#each_mail and/or POP3#mails. - !ruby/struct:SM::Flow::LI label: "3." body: "Close POP session by calling POP3#finish or use the block form of #start." type: :NUMBER - !ruby/struct:SM::Flow::H level: 3 text: Shortened Code - !ruby/struct:SM::Flow::P body: The example above is very verbose. You can shorten the code by using some utility methods. First, the block form of Net::POP3.start can be used instead of POP3.new, POP3#start and POP3#finish. - !ruby/struct:SM::Flow::VERB body: " require 'net/pop'\n\n Net::POP3.start('pop.example.com', 110,\n 'YourAccount', 'YourPassword') do |pop|\n if pop.mails.empty?\n puts 'No mail.'\n else\n i = 0\n pop.each_mail do |m| # or "pop.mails.each ..."\n File.open("inbox/#{i}", 'w') do |f|\n f.write m.pop\n end\n m.delete\n i += 1\n end\n puts "#{pop.mails.size} mails popped."\n end\n end\n" - !ruby/struct:SM::Flow::P body: "POP3#delete_all is an alternative for #each_mail and #delete." - !ruby/struct:SM::Flow::VERB body: " require 'net/pop'\n\n Net::POP3.start('pop.example.com', 110,\n 'YourAccount', 'YourPassword') do |pop|\n if pop.mails.empty?\n puts 'No mail.'\n else\n i = 1\n pop.delete_all do |m|\n File.open("inbox/#{i}", 'w') do |f|\n f.write m.pop\n end\n i += 1\n end\n end\n end\n" - !ruby/struct:SM::Flow::P body: And here is an even shorter example. - !ruby/struct:SM::Flow::VERB body: " require 'net/pop'\n\n i = 0\n Net::POP3.delete_all('pop.example.com', 110,\n 'YourAccount', 'YourPassword') do |m|\n File.open("inbox/#{i}", 'w') do |f|\n f.write m.pop\n end\n i += 1\n end\n" - !ruby/struct:SM::Flow::H level: 3 text: Memory Space Issues - !ruby/struct:SM::Flow::P body: All the examples above get each message as one big string. This example avoids this. - !ruby/struct:SM::Flow::VERB body: " require 'net/pop'\n\n i = 1\n Net::POP3.delete_all('pop.example.com', 110,\n 'YourAccount', 'YourPassword') do |m|\n File.open("inbox/#{i}", 'w') do |f|\n m.pop do |chunk| # get a message little by little.\n f.write chunk\n end\n i += 1\n end\n end\n" - !ruby/struct:SM::Flow::H level: 3 text: Using APOP - !ruby/struct:SM::Flow::P body: "The net/pop library supports APOP authentication. To use APOP, use the Net::APOP class instead of the Net::POP3 class. You can use the utility method, Net::POP3.APOP(). For example:" - !ruby/struct:SM::Flow::VERB body: " require 'net/pop'\n\n # Use APOP authentication if $isapop == true\n pop = Net::POP3.APOP($is_apop).new('apop.example.com', 110)\n pop.start(YourAccount', 'YourPassword') do |pop|\n # Rest of the code is the same.\n end\n" - !ruby/struct:SM::Flow::H level: 3 text: Fetch Only Selected Mail Using 'UIDL' POP Command - !ruby/struct:SM::Flow::P body: If your POP server provides UIDL functionality, you can grab only selected mails from the POP server. e.g. - !ruby/struct:SM::Flow::VERB body: " def need_pop?( id )\n # determine if we need pop this mail...\n end\n\n Net::POP3.start('pop.example.com', 110,\n 'Your account', 'Your password') do |pop|\n pop.mails.select { |m| need_pop?(m.unique_id) }.each do |m|\n do_something(m.pop)\n end\n end\n" - !ruby/struct:SM::Flow::P body: The POPMail#unique_id() method returns the unique-id of the message as a String. Normally the unique-id is a hash of the message. constants: - !ruby/object:RI::Constant comment: name: Revision value: "%q$Revision: 29903 $.split[1]" full_name: Net::POP3 includes: [] instance_methods: - !ruby/object:RI::MethodSummary name: active? - !ruby/object:RI::MethodSummary name: apop? - !ruby/object:RI::MethodSummary name: auth_only - !ruby/object:RI::MethodSummary name: command - !ruby/object:RI::MethodSummary name: delete_all - !ruby/object:RI::MethodSummary name: disable_ssl - !ruby/object:RI::MethodSummary name: do_finish - !ruby/object:RI::MethodSummary name: do_start - !ruby/object:RI::MethodSummary name: each - !ruby/object:RI::MethodSummary name: each_mail - !ruby/object:RI::MethodSummary name: enable_ssl - !ruby/object:RI::MethodSummary name: finish - !ruby/object:RI::MethodSummary name: inspect - !ruby/object:RI::MethodSummary name: logging - !ruby/object:RI::MethodSummary name: mails - !ruby/object:RI::MethodSummary name: n_bytes - !ruby/object:RI::MethodSummary name: n_mails - !ruby/object:RI::MethodSummary name: on_connect - !ruby/object:RI::MethodSummary name: port - !ruby/object:RI::MethodSummary name: read_timeout= - !ruby/object:RI::MethodSummary name: reset - !ruby/object:RI::MethodSummary name: set_debug_output - !ruby/object:RI::MethodSummary name: start - !ruby/object:RI::MethodSummary name: started? - !ruby/object:RI::MethodSummary name: use_ssl? name: POP3 superclass: Protocol
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