3b69b4ada4
This change brings in the new agreed startup message for the server. Adds additional links point to Minio SDKs as well.
94 lines
2.6 KiB
Go
94 lines
2.6 KiB
Go
/*
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* Minio Cloud Storage, (C) 2016 Minio, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package main
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import (
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"errors"
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"net"
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"os"
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"syscall"
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)
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// Make sure that none of the other processes are listening on the
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// specified port on any of the interfaces.
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//
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// On linux if a process is listening on 127.0.0.1:9000 then Listen()
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// on ":9000" fails with the error "port already in use".
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// However on Mac OSX Listen() on ":9000" falls back to the IPv6 address.
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// This causes confusion on Mac OSX that minio server is not reachable
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// on 127.0.0.1 even though minio server is running. So before we start
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// the minio server we make sure that the port is free on all the IPs.
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func checkPortAvailability(port int) {
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isAddrInUse := func(err error) bool {
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// Check if the syscall error is EADDRINUSE.
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// EADDRINUSE is the system call error if another process is
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// already listening at the specified port.
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neterr, ok := err.(*net.OpError)
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if !ok {
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return false
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}
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osErr, ok := neterr.Err.(*os.SyscallError)
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if !ok {
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return false
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}
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sysErr, ok := osErr.Err.(syscall.Errno)
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if !ok {
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return false
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}
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if sysErr != syscall.EADDRINUSE {
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return false
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}
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return true
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}
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ifcs, err := net.Interfaces()
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if err != nil {
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fatalIf(err, "Unable to list interfaces.")
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}
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for _, ifc := range ifcs {
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addrs, err := ifc.Addrs()
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if err != nil {
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fatalIf(err, "Unable to list addresses on interface %s.", ifc.Name)
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}
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for _, addr := range addrs {
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ipnet, ok := addr.(*net.IPNet)
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if !ok {
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errorIf(errors.New(""), "Failed to assert type on (*net.IPNet) interface.")
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continue
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}
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ip := ipnet.IP
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network := "tcp4"
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if ip.To4() == nil {
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network = "tcp6"
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}
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tcpAddr := net.TCPAddr{IP: ip, Port: port, Zone: ifc.Name}
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l, err := net.ListenTCP(network, &tcpAddr)
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if err != nil {
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if isAddrInUse(err) {
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// Fail if port is already in use.
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fatalIf(err, "Unable to listen on %s:%.d.", tcpAddr.IP, tcpAddr.Port)
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} else {
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// Ignore other errors.
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continue
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}
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}
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if err = l.Close(); err != nil {
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fatalIf(err, "Unable to close listener on %s:%.d.", tcpAddr.IP, tcpAddr.Port)
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}
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}
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}
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}
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