Ruby Systems Programming

From Ruby on Ales 2013

Transcript

1. Ruby Systems Programming Andy delcambre Monday, March 11, 13
2. @adelcambre sounds like welcome Andy Delcambre Monday, March 11, 13
3. Monday, March 11, 13
4. gist Monday, March 11, 13
5. Monday, March 11, 13
6. diploma goes here Monday, March 11, 13
7. Delcambre Software Monday, March 11, 13
8. CS 333 Operating systems CS 494 Networking Monday, March 11, 13
9. Monday, March 11, 13
10. Ruby Systems Programming Monday, March 11, 13
11. “operate and control the computer hardware and to provide a platform for running application software” http://en.wikipedia.org/wiki/System_software Monday, March 11, 13
12. User Mode Kernel Mode Monday, March 11, 13
13. User Mode Monday, March 11, 13
14. User Mode Math Monday, March 11, 13
15. User Mode Math Access Memory* Monday, March 11, 13
16. Kernel Mode Monday, March 11, 13
17. Kernel Mode Anything Monday, March 11, 13
18. Kernel Mode Anything Everything Monday, March 11, 13
19. User Mode Kernel Mode Monday, March 11, 13
20. User Mode Kernel Mode Your Program System Calls Monday, March 11, 13
21. Obligatory Jessica Monday, March 11, 13
22. $ strace -p <server pid> Monday, March 11, 13
23. Monday, March 11, 13
24. 120,602 Calls One Request Monday, March 11, 13
25. linux$ wc -l syscall_table.S 326 Monday, March 11, 13
26. mov!eax, 5 mov!ebx, path mov!ecx, flags int!80h open(path, flags) Monday, March 11, 13
27. linux$ cat syscall_table.S | grep -c sys_ni_syscal 65 Monday, March 11, 13
28. linux$ cat syscall_table.S | grep -c sys_ni_syscal 65 “Not Implemented” Monday, March 11, 13
29. Monday, March 11, 13
30. 1980 1970 1960 1990 Multics Unix (Unics) BSD BSD 4.2 TCP/IP Monday, March 11, 13
31. BSD Sockets Monday, March 11, 13
32. •socket() •bind() •listen() •accept() •send() and recv() •close() Monday, March 11, 13
33. TCP Client Server SYN SYN/ACK Data ACK Data/ACK FIN ACK FIN ACK ACK Monday, March 11, 13
34. TCP Client Server SYN SYN/ACK Data ACK Data/ACK FIN ACK FIN ACK ACK Monday, March 11, 13
35. TCP Client Server SYN SYN/ACK Data ACK Data/ACK FIN ACK FIN ACK ACK Monday, March 11, 13
36. TCP Client Server SYN SYN/ACK Data ACK Data/ACK FIN ACK FIN ACK ACK Monday, March 11, 13
37. $ lsof -p 34866 -a -i COMMAND PID TYPE NODE NAME ruby 34866 IPv4 TCP 127.0.0.1:80 (LISTEN) ruby 34866 IPv4 TCP 127.0.0.1:80->127.0.0.1:61898 (ESTABLISHED) Monday, March 11, 13
38. HTTP Request GET /index.html HTTP/1.1 User-Agent: curl/7.24.0 Host: www.google.com Accept: */* Monday, March 11, 13
39. HTTP Response HTTP/1.1 200 OK Date: Tue, 05 Mar 2013 23:03:52 GMT Cache-Control: private, max-age=0 Content-Type: text/html Server: gws Transfer-Encoding: chunked <data> Monday, March 11, 13
40. There Will be Code Monday, March 11, 13
41. require 'socket' NOT_FOUND = "HTTP/1.1 404 Not Found\nContent-Length: 9\n\nNot Found" OK = "HTTP/1.1 200 OK\n" socket = Socket.new(:INET, :STREAM) sockaddr = Socket.sockaddr_in(11080, '127.0.0.1') socket.bind(sockaddr) socket.listen(5) while client_socket = socket.accept[0] path = client_socket.recv(1024).split[1] filename = File.expand_path("../#{path}", __FILE__) if File.file?(filename) contents = File.read(filename) client_socket.send(OK, 0) client_socket.send("Content-Length: #{contents.size}\n\n", 0) client_socket.send("#{contents}", 0) else client_socket.send(NOT_FOUND, 0) end client_socket.close end Monday, March 11, 13
42. require 'socket' NOT_FOUND = "HTTP/1.1 404 Not Found\nContent-Length: 9\n\nNot Found" OK = "HTTP/1.1 200 OK\n" socket = Socket.new(:INET, :STREAM) sockaddr = Socket.sockaddr_in(11080, '127.0.0.1') socket.bind(sockaddr) socket.listen(5) while client_socket = socket.accept[0] path = client_socket.recv(1024).split[1] filename = File.expand_path("../#{path}", __FILE__) if File.file?(filename) contents = File.read(filename) client_socket.send(OK, 0) client_socket.send("Content-Length: #{contents.size}\n\n", 0) client_socket.send("#{contents}", 0) else client_socket.send(NOT_FOUND, 0) end client_socket.close end Require the socket lib Monday, March 11, 13
43. require 'socket' NOT_FOUND = "HTTP/1.1 404 Not Found\nContent-Length: 9\n\nNot Found" OK = "HTTP/1.1 200 OK\n" socket = Socket.new(:INET, :STREAM) sockaddr = Socket.sockaddr_in(11080, '127.0.0.1') socket.bind(sockaddr) socket.listen(5) while client_socket = socket.accept[0] path = client_socket.recv(1024).split[1] filename = File.expand_path("../#{path}", __FILE__) if File.file?(filename) contents = File.read(filename) client_socket.send(OK, 0) client_socket.send("Content-Length: #{contents.size}\n\n", 0) client_socket.send("#{contents}", 0) else client_socket.send(NOT_FOUND, 0) end client_socket.close end Some constants for later Monday, March 11, 13
44. require 'socket' NOT_FOUND = "HTTP/1.1 404 Not Found\nContent-Length: 9\n\nNot Found" OK = "HTTP/1.1 200 OK\n" socket = Socket.new(:INET, :STREAM) sockaddr = Socket.sockaddr_in(11080, '127.0.0.1') socket.bind(sockaddr) socket.listen(5) while client_socket = socket.accept[0] path = client_socket.recv(1024).split[1] filename = File.expand_path("../#{path}", __FILE__) if File.file?(filename) contents = File.read(filename) client_socket.send(OK, 0) client_socket.send("Content-Length: #{contents.size}\n\n", 0) client_socket.send("#{contents}", 0) else client_socket.send(NOT_FOUND, 0) end client_socket.close end socket = Socket.new(:INET, :STREAM) Monday, March 11, 13
45. require 'socket' NOT_FOUND = "HTTP/1.1 404 Not Found\nContent-Length: 9\n\nNot Found" OK = "HTTP/1.1 200 OK\n" socket = Socket.new(:INET, :STREAM) sockaddr = Socket.sockaddr_in(11080, '127.0.0.1') socket.bind(sockaddr) socket.listen(5) while client_socket = socket.accept[0] path = client_socket.recv(1024).split[1] filename = File.expand_path("../#{path}", __FILE__) if File.file?(filename) contents = File.read(filename) client_socket.send(OK, 0) client_socket.send("Content-Length: #{contents.size}\n\n", 0) client_socket.send("#{contents}", 0) else client_socket.send(NOT_FOUND, 0) end client_socket.close end sockaddr = Socket.sockaddr_in(11080, '127.0.0.1') socket.bind(sockaddr) Monday, March 11, 13
46. require 'socket' NOT_FOUND = "HTTP/1.1 404 Not Found\nContent-Length: 9\n\nNot Found" OK = "HTTP/1.1 200 OK\n" socket = Socket.new(:INET, :STREAM) sockaddr = Socket.sockaddr_in(11080, '127.0.0.1') socket.bind(sockaddr) socket.listen(5) while client_socket = socket.accept[0] path = client_socket.recv(1024).split[1] filename = File.expand_path("../#{path}", __FILE__) if File.file?(filename) contents = File.read(filename) client_socket.send(OK, 0) client_socket.send("Content-Length: #{contents.size}\n\n", 0) client_socket.send("#{contents}", 0) else client_socket.send(NOT_FOUND, 0) end client_socket.close end socket.listen(5) Monday, March 11, 13
47. require 'socket' NOT_FOUND = "HTTP/1.1 404 Not Found\nContent-Length: 9\n\nNot Found" OK = "HTTP/1.1 200 OK\n" socket = Socket.new(:INET, :STREAM) sockaddr = Socket.sockaddr_in(11080, '127.0.0.1') socket.bind(sockaddr) socket.listen(5) while client_socket = socket.accept[0] path = client_socket.recv(1024).split[1] filename = File.expand_path("../#{path}", __FILE__) if File.file?(filename) contents = File.read(filename) client_socket.send(OK, 0) client_socket.send("Content-Length: #{contents.size}\n\n", 0) client_socket.send("#{contents}", 0) else client_socket.send(NOT_FOUND, 0) end client_socket.close end while client_socket = socket.accept[0] Monday, March 11, 13
48. require 'socket' NOT_FOUND = "HTTP/1.1 404 Not Found\nContent-Length: 9\n\nNot Found" OK = "HTTP/1.1 200 OK\n" socket = Socket.new(:INET, :STREAM) sockaddr = Socket.sockaddr_in(11080, '127.0.0.1') socket.bind(sockaddr) socket.listen(5) while client_socket = socket.accept[0] path = client_socket.recv(1024).split[1] filename = File.expand_path("../#{path}", __FILE__) if File.file?(filename) contents = File.read(filename) client_socket.send(OK, 0) client_socket.send("Content-Length: #{contents.size}\n\n", 0) client_socket.send("#{contents}", 0) else client_socket.send(NOT_FOUND, 0) end client_socket.close end path = client_socket.recv(1024).split[1] Monday, March 11, 13
49. require 'socket' NOT_FOUND = "HTTP/1.1 404 Not Found\nContent-Length: 9\n\nNot Found" OK = "HTTP/1.1 200 OK\n" socket = Socket.new(:INET, :STREAM) sockaddr = Socket.sockaddr_in(11080, '127.0.0.1') socket.bind(sockaddr) socket.listen(5) while client_socket = socket.accept[0] path = client_socket.recv(1024).split[1] filename = File.expand_path("../#{path}", __FILE__) if File.file?(filename) contents = File.read(filename) client_socket.send(OK, 0) client_socket.send("Content-Length: #{contents.size}\n\n", 0) client_socket.send("#{contents}", 0) else client_socket.send(NOT_FOUND, 0) end client_socket.close end path = client_socket.recv(1024).split[1] GET /index.html HTTP/1.1 Monday, March 11, 13
50. require 'socket' NOT_FOUND = "HTTP/1.1 404 Not Found\nContent-Length: 9\n\nNot Found" OK = "HTTP/1.1 200 OK\n" socket = Socket.new(:INET, :STREAM) sockaddr = Socket.sockaddr_in(11080, '127.0.0.1') socket.bind(sockaddr) socket.listen(5) while client_socket = socket.accept[0] path = client_socket.recv(1024).split[1] filename = File.expand_path("../#{path}", __FILE__) if File.file?(filename) contents = File.read(filename) client_socket.send(OK, 0) client_socket.send("Content-Length: #{contents.size}\n\n", 0) client_socket.send("#{contents}", 0) else client_socket.send(NOT_FOUND, 0) end client_socket.close end filename = File.expand_path("../#{path}", __FILE__) Monday, March 11, 13
51. require 'socket' NOT_FOUND = "HTTP/1.1 404 Not Found\nContent-Length: 9\n\nNot Found" OK = "HTTP/1.1 200 OK\n" socket = Socket.new(:INET, :STREAM) sockaddr = Socket.sockaddr_in(11080, '127.0.0.1') socket.bind(sockaddr) socket.listen(5) while client_socket = socket.accept[0] path = client_socket.recv(1024).split[1] filename = File.expand_path("../#{path}", __FILE__) if File.file?(filename) contents = File.read(filename) client_socket.send(OK, 0) client_socket.send("Content-Length: #{contents.size}\n\n", 0) client_socket.send("#{contents}", 0) else client_socket.send(NOT_FOUND, 0) end client_socket.close end if File.file?(filename) Monday, March 11, 13
52. require 'socket' NOT_FOUND = "HTTP/1.1 404 Not Found\nContent-Length: 9\n\nNot Found" OK = "HTTP/1.1 200 OK\n" socket = Socket.new(:INET, :STREAM) sockaddr = Socket.sockaddr_in(11080, '127.0.0.1') socket.bind(sockaddr) socket.listen(5) while client_socket = socket.accept[0] path = client_socket.recv(1024).split[1] filename = File.expand_path("../#{path}", __FILE__) if File.file?(filename) contents = File.read(filename) client_socket.send(OK, 0) client_socket.send("Content-Length: #{contents.size}\n\n", 0) client_socket.send("#{contents}", 0) else client_socket.send(NOT_FOUND, 0) end client_socket.close end contents = File.read(filename) client_socket.send(OK, 0) client_socket.send("Content-Length: #{contents.size}\n\n", 0) client_socket.send("#{contents}", 0) Monday, March 11, 13
53. require 'socket' NOT_FOUND = "HTTP/1.1 404 Not Found\nContent-Length: 9\n\nNot Found" OK = "HTTP/1.1 200 OK\n" socket = Socket.new(:INET, :STREAM) sockaddr = Socket.sockaddr_in(11080, '127.0.0.1') socket.bind(sockaddr) socket.listen(5) while client_socket = socket.accept[0] path = client_socket.recv(1024).split[1] filename = File.expand_path("../#{path}", __FILE__) if File.file?(filename) contents = File.read(filename) client_socket.send(OK, 0) client_socket.send("Content-Length: #{contents.size}\n\n", 0) client_socket.send("#{contents}", 0) else client_socket.send(NOT_FOUND, 0) end client_socket.close end contents = File.read(filename) client_socket.send(OK, 0) client_socket.send("Content-Length: #{contents.size}\n\n", 0) client_socket.send("#{contents}", 0) OK = "HTTP/1.1 200 OK\n" Monday, March 11, 13
54. require 'socket' NOT_FOUND = "HTTP/1.1 404 Not Found\nContent-Length: 9\n\nNot Found" OK = "HTTP/1.1 200 OK\n" socket = Socket.new(:INET, :STREAM) sockaddr = Socket.sockaddr_in(11080, '127.0.0.1') socket.bind(sockaddr) socket.listen(5) while client_socket = socket.accept[0] path = client_socket.recv(1024).split[1] filename = File.expand_path("../#{path}", __FILE__) if File.file?(filename) contents = File.read(filename) client_socket.send(OK, 0) client_socket.send("Content-Length: #{contents.size}\n\n", 0) client_socket.send("#{contents}", 0) else client_socket.send(NOT_FOUND, 0) end client_socket.close end client_socket.send(NOT_FOUND, 0) Monday, March 11, 13
55. require 'socket' NOT_FOUND = "HTTP/1.1 404 Not Found\nContent-Length: 9\n\nNot Found" OK = "HTTP/1.1 200 OK\n" socket = Socket.new(:INET, :STREAM) sockaddr = Socket.sockaddr_in(11080, '127.0.0.1') socket.bind(sockaddr) socket.listen(5) while client_socket = socket.accept[0] path = client_socket.recv(1024).split[1] filename = File.expand_path("../#{path}", __FILE__) if File.file?(filename) contents = File.read(filename) client_socket.send(OK, 0) client_socket.send("Content-Length: #{contents.size}\n\n", 0) client_socket.send("#{contents}", 0) else client_socket.send(NOT_FOUND, 0) end client_socket.close end client_socket.send(NOT_FOUND, 0) NOT_FOUND = "HTTP/1.1 404 Not Found\nContent-Length: 9\n\nNot Found" Monday, March 11, 13
56. require 'socket' NOT_FOUND = "HTTP/1.1 404 Not Found\nContent-Length: 9\n\nNot Found" OK = "HTTP/1.1 200 OK\n" socket = Socket.new(:INET, :STREAM) sockaddr = Socket.sockaddr_in(11080, '127.0.0.1') socket.bind(sockaddr) socket.listen(5) while client_socket = socket.accept[0] path = client_socket.recv(1024).split[1] filename = File.expand_path("../#{path}", __FILE__) if File.file?(filename) contents = File.read(filename) client_socket.send(OK, 0) client_socket.send("Content-Length: #{contents.size}\n\n", 0) client_socket.send("#{contents}", 0) else client_socket.send(NOT_FOUND, 0) end client_socket.close end client_socket.close Monday, March 11, 13
57. require 'socket' NOT_FOUND = "HTTP/1.1 404 Not Found\nContent-Length: 9\n\nNot Found" OK = "HTTP/1.1 200 OK\n" socket = Socket.new(:INET, :STREAM) sockaddr = Socket.sockaddr_in(11080, '127.0.0.1') socket.bind(sockaddr) socket.listen(5) while client_socket = socket.accept[0] path = client_socket.recv(1024).split[1] filename = File.expand_path("../#{path}", __FILE__) if File.file?(filename) contents = File.read(filename) client_socket.send(OK, 0) client_socket.send("Content-Length: #{contents.size}\n\n", 0) client_socket.send("#{contents}", 0) else client_socket.send(NOT_FOUND, 0) end client_socket.close end Monday, March 11, 13
58. def new_ipv6_server(addr, port, opt) opt.key?(:ipv6only) or return Kgio::TCPServer.new(addr, port) defined?(IPV6_V6ONLY) or abort "Socket::IPV6_V6ONLY not defined, upgrade Ruby and/or your OS" sock = Socket.new(AF_INET6, SOCK_STREAM, 0) sock.setsockopt(IPPROTO_IPV6, IPV6_V6ONLY, opt[:ipv6only] ? 1 : 0) sock.setsockopt(SOL_SOCKET, SO_REUSEADDR, 1) sock.bind(Socket.pack_sockaddr_in(port, addr)) IO_PURGATORY << sock Kgio::TCPServer.for_fd(sock.fileno) end ret = IO.select(l, nil, SELF_PIPE, @timeout) and ready = ret[0] Unicorn Monday, March 11, 13
59. def new_ipv6_server(addr, port, opt) opt.key?(:ipv6only) or return Kgio::TCPServer.new(addr, port) defined?(IPV6_V6ONLY) or abort "Socket::IPV6_V6ONLY not defined, upgrade Ruby and/or your OS" sock = Socket.new(AF_INET6, SOCK_STREAM, 0) sock.setsockopt(IPPROTO_IPV6, IPV6_V6ONLY, opt[:ipv6only] ? 1 : 0) sock.setsockopt(SOL_SOCKET, SO_REUSEADDR, 1) sock.bind(Socket.pack_sockaddr_in(port, addr)) IO_PURGATORY << sock Kgio::TCPServer.for_fd(sock.fileno) end ret = IO.select(l, nil, SELF_PIPE, @timeout) and ready = ret[0] Unicorn sock = Socket.new(AF_INET6, SOCK_STREAM, 0) Monday, March 11, 13
60. def new_ipv6_server(addr, port, opt) opt.key?(:ipv6only) or return Kgio::TCPServer.new(addr, port) defined?(IPV6_V6ONLY) or abort "Socket::IPV6_V6ONLY not defined, upgrade Ruby and/or your OS" sock = Socket.new(AF_INET6, SOCK_STREAM, 0) sock.setsockopt(IPPROTO_IPV6, IPV6_V6ONLY, opt[:ipv6only] ? 1 : 0) sock.setsockopt(SOL_SOCKET, SO_REUSEADDR, 1) sock.bind(Socket.pack_sockaddr_in(port, addr)) IO_PURGATORY << sock Kgio::TCPServer.for_fd(sock.fileno) end ret = IO.select(l, nil, SELF_PIPE, @timeout) and ready = ret[0] Unicorn sock.bind( Socket.pack_sockaddr_in(port, addr)) Monday, March 11, 13
61. def new_ipv6_server(addr, port, opt) opt.key?(:ipv6only) or return Kgio::TCPServer.new(addr, port) defined?(IPV6_V6ONLY) or abort "Socket::IPV6_V6ONLY not defined, upgrade Ruby and/or your OS" sock = Socket.new(AF_INET6, SOCK_STREAM, 0) sock.setsockopt(IPPROTO_IPV6, IPV6_V6ONLY, opt[:ipv6only] ? 1 : 0) sock.setsockopt(SOL_SOCKET, SO_REUSEADDR, 1) sock.bind(Socket.pack_sockaddr_in(port, addr)) IO_PURGATORY << sock Kgio::TCPServer.for_fd(sock.fileno) end ret = IO.select(l, nil, SELF_PIPE, @timeout) and ready = ret[0] Unicorn IO.select(l, nil, SELF_PIPE, @timeout) Monday, March 11, 13
62. Thanks! @adelcambre Monday, March 11, 13