func (p *PortFilter) portAlreadyInUse(node *cluster.Node, requested dockerclient.PortBinding) bool {
for _, c := range node.Containers() {
for _, port := range c.Info.HostConfig.PortBindings {
for _, binding := range port {
if binding.HostPort == requested.HostPort {
// Another container on the same host is binding on the same
// port/protocol. Verify if they are requesting the same
// binding IP, or if the other container is already binding on
// every interface.
if requested.HostIp == binding.HostIp || bindsAllInterfaces(requested) || bindsAllInterfaces(binding) {
return true
}
}
}
}
}
return false
}
func (p *PortFilter) portAlreadyInUse(node *cluster.Node, requested dockerclient.PortBinding) bool {
for _, c := range node.Containers() {
// HostConfig.PortBindings contains the requested ports.
// NetworkSettings.Ports contains the actual ports.
//
// We have to check both because:
// 1/ If the port was not specifically bound (e.g. -p 80), then
// HostConfig.PortBindings.HostPort will be empty and we have to check
// NetworkSettings.Port.HostPort to find out which port got dynamically
// allocated.
// 2/ If the port was bound (e.g. -p 80:80) but the container is stopped,
// NetworkSettings.Port will be null and we have to check
// HostConfig.PortBindings to find out the mapping.
if p.compare(requested, c.Info.HostConfig.PortBindings) || p.compare(requested, c.Info.NetworkSettings.Ports) {
return true
}
}
return false
}