From fcbf63e62c627deae76c1b8cb8c0876c536ed811 Mon Sep 17 00:00:00 2001
From: Jari Vetoniemi <jari.vetoniemi@indooratlas.com>
Date: Mon, 16 Mar 2020 18:49:26 +0900
Subject: Fresh start

---
 jni/ruby/ext/socket/tcpserver.c | 178 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 178 insertions(+)
 create mode 100644 jni/ruby/ext/socket/tcpserver.c

(limited to 'jni/ruby/ext/socket/tcpserver.c')

diff --git a/jni/ruby/ext/socket/tcpserver.c b/jni/ruby/ext/socket/tcpserver.c
new file mode 100644
index 0000000..2245a06
--- /dev/null
+++ b/jni/ruby/ext/socket/tcpserver.c
@@ -0,0 +1,178 @@
+/************************************************
+
+  tcpserver.c -
+
+  created at: Thu Mar 31 12:21:29 JST 1994
+
+  Copyright (C) 1993-2007 Yukihiro Matsumoto
+
+************************************************/
+
+#include "rubysocket.h"
+
+/*
+ * call-seq:
+ *   TCPServer.new([hostname,] port) => tcpserver
+ *
+ * Creates a new server socket bound to _port_.
+ *
+ * If _hostname_ is given, the socket is bound to it.
+ *
+ *   serv = TCPServer.new("127.0.0.1", 28561)
+ *   s = serv.accept
+ *   s.puts Time.now
+ *   s.close
+ *
+ * Internally, TCPServer.new calls getaddrinfo() function to
+ * obtain addresses.
+ * If getaddrinfo() returns multiple addresses,
+ * TCPServer.new tries to create a server socket for each address
+ * and returns first one that is successful.
+ *
+ */
+static VALUE
+tcp_svr_init(int argc, VALUE *argv, VALUE sock)
+{
+    VALUE hostname, port;
+
+    rb_scan_args(argc, argv, "011", &hostname, &port);
+    return rsock_init_inetsock(sock, hostname, port, Qnil, Qnil, INET_SERVER);
+}
+
+/*
+ * call-seq:
+ *   tcpserver.accept => tcpsocket
+ *
+ * Accepts an incoming connection. It returns a new TCPSocket object.
+ *
+ *   TCPServer.open("127.0.0.1", 14641) {|serv|
+ *     s = serv.accept
+ *     s.puts Time.now
+ *     s.close
+ *   }
+ *
+ */
+static VALUE
+tcp_accept(VALUE sock)
+{
+    rb_io_t *fptr;
+    union_sockaddr from;
+    socklen_t fromlen;
+
+    GetOpenFile(sock, fptr);
+    fromlen = (socklen_t)sizeof(from);
+    return rsock_s_accept(rb_cTCPSocket, fptr->fd, &from.addr, &fromlen);
+}
+
+/*
+ * call-seq:
+ *   tcpserver.accept_nonblock => tcpsocket
+ *
+ * Accepts an incoming connection using accept(2) after
+ * O_NONBLOCK is set for the underlying file descriptor.
+ * It returns an accepted TCPSocket for the incoming connection.
+ *
+ * === Example
+ * 	require 'socket'
+ * 	serv = TCPServer.new(2202)
+ * 	begin # emulate blocking accept
+ * 	  sock = serv.accept_nonblock
+ * 	rescue IO::WaitReadable, Errno::EINTR
+ * 	  IO.select([serv])
+ * 	  retry
+ * 	end
+ * 	# sock is an accepted socket.
+ *
+ * Refer to Socket#accept for the exceptions that may be thrown if the call
+ * to TCPServer#accept_nonblock fails.
+ *
+ * TCPServer#accept_nonblock may raise any error corresponding to accept(2) failure,
+ * including Errno::EWOULDBLOCK.
+ *
+ * If the exception is Errno::EWOULDBLOCK, Errno::AGAIN, Errno::ECONNABORTED, Errno::EPROTO,
+ * it is extended by IO::WaitReadable.
+ * So IO::WaitReadable can be used to rescue the exceptions for retrying accept_nonblock.
+ *
+ * === See
+ * * TCPServer#accept
+ * * Socket#accept
+ */
+static VALUE
+tcp_accept_nonblock(VALUE sock)
+{
+    rb_io_t *fptr;
+    union_sockaddr from;
+    socklen_t fromlen;
+
+    GetOpenFile(sock, fptr);
+    fromlen = (socklen_t)sizeof(from);
+    return rsock_s_accept_nonblock(rb_cTCPSocket, fptr, &from.addr, &fromlen);
+}
+
+/*
+ * call-seq:
+ *   tcpserver.sysaccept => file_descriptor
+ *
+ * Returns a file descriptor of a accepted connection.
+ *
+ *   TCPServer.open("127.0.0.1", 28561) {|serv|
+ *     fd = serv.sysaccept
+ *     s = IO.for_fd(fd)
+ *     s.puts Time.now
+ *     s.close
+ *   }
+ *
+ */
+static VALUE
+tcp_sysaccept(VALUE sock)
+{
+    rb_io_t *fptr;
+    union_sockaddr from;
+    socklen_t fromlen;
+
+    GetOpenFile(sock, fptr);
+    fromlen = (socklen_t)sizeof(from);
+    return rsock_s_accept(0, fptr->fd, &from.addr, &fromlen);
+}
+
+void
+rsock_init_tcpserver(void)
+{
+    /*
+     * Document-class: TCPServer < TCPSocket
+     *
+     * TCPServer represents a TCP/IP server socket.
+     *
+     * A simple TCP server may look like:
+     *
+     *   require 'socket'
+     *
+     *   server = TCPServer.new 2000 # Server bind to port 2000
+     *   loop do
+     *     client = server.accept    # Wait for a client to connect
+     *     client.puts "Hello !"
+     *     client.puts "Time is #{Time.now}"
+     *     client.close
+     *   end
+     *
+     * A more usable server (serving multiple clients):
+     *
+     *   require 'socket'
+     *
+     *   server = TCPServer.new 2000
+     *   loop do
+     *     Thread.start(server.accept) do |client|
+     *       client.puts "Hello !"
+     *       client.puts "Time is #{Time.now}"
+     *       client.close
+     *     end
+     *   end
+     *
+     */
+    rb_cTCPServer = rb_define_class("TCPServer", rb_cTCPSocket);
+    rb_define_method(rb_cTCPServer, "accept", tcp_accept, 0);
+    rb_define_method(rb_cTCPServer, "accept_nonblock", tcp_accept_nonblock, 0);
+    rb_define_method(rb_cTCPServer, "sysaccept", tcp_sysaccept, 0);
+    rb_define_method(rb_cTCPServer, "initialize", tcp_svr_init, -1);
+    rb_define_method(rb_cTCPServer, "listen", rsock_sock_listen, 1); /* in socket.c */
+}
-- 
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