0001    /**
0002     * Copyright IBM Corporation 2016
0003     *
0004     * Licensed under the Apache License, Version 2.0 (the "License");
0005     * you may not use this file except in compliance with the License.
0006     * You may obtain a copy of the License at
0007     *
0008     * http://www.apache.org/licenses/LICENSE-2.0
0009     *
0010     * Unless required by applicable law or agreed to in writing, software
0011     * distributed under the License is distributed on an "AS IS" BASIS,
0012     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
0013     * See the License for the specific language governing permissions and
0014     * limitations under the License.
0015     **/
0016    
0017    #if os(Linux)
0018    import Glibc
0019    #else
0020    import Darwin
0021    #endif
0022    
0023    /**
0024    * Creates and a binds a socket to the specified port number and ip address.
0025    * The socket is then returned.
0026    */
0027    public func createSocket(address: Address) -> Int32
0028    {
0029      var name = sockaddr_in()
0030    
0031      // Create the socket
0032      let sockfd = socket(PF_INET, , )
0033      if sockfd <  {
0034        perror ("socket")
0035        //exit(EXIT_FAILURE)
0036        exit() // swift compiler issue
0037      }
0038    
0039      // Make the address reusable for multiple runs
0040      var on: Int32 = 
0041      setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, &on, socklen_t(sizeof(Int32)))
0042    
0043      // Give the socket a name
0044      name.sin_family = sa_family_t(AF_INET)
0045      name.sin_port = UInt16(address.port).bigEndian
0046      var addr: UInt32 = 
0047      inet_pton(AF_INET, address.ip, &addr)
0048      name.sin_addr.s_addr = addr
0049      // INADDR_ANY which equals 0
0050      // name.sin_addr.s_addr = in_addr_t(0)
0051    
0052      var bindAddr = sockaddr()
0053      memcpy(&bindAddr, &name, Int(sizeof(sockaddr_in)))
0054      let addrSize: socklen_t = socklen_t(sizeof(sockaddr_in))
0055    
0056      // Bind name to socket
0057      if bind(sockfd, &bindAddr, addrSize) <  {
0058        perror("bind")
0059        //exit(EXIT_FAILURE)
0060        exit() // swift compiler issue
0061      }
0062      return sockfd
0063    }
0064