github/linuxkit
1
0
Fork 0
mirror of https://github.com/linuxkit/linuxkit.git synced 2025-07-23 11:00:25 +00:00
Code Issues Projects Releases Wiki Activity

proxy: bind the IP port as well as the vsock port

Browse Source 
Previously the proxy would listen only on the vsock port, which is
fine for accessing the port on the host, but if a container also wants
to access the port (e.g. via `--net=host` and using the Moby IP) then
we need to listen on the IP too.

Related to [docker/pinata#2854]

Signed-off-by: David Scott <dave.scott@docker.com>
This commit is contained in:
David Scott 2016-04-29 11:55:06 +01:00
parent d00fd8bff3
commit 198dc8ba73
2 changed files with 37 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

30
alpine/packages/proxy/libproxy/proxy.go
View File

@ -25,8 +25,8 @@ type Proxy interface {
BackendAddr() net.Addr
}
// NewProxy creates a Proxy according to the specified frontendAddr and backendAddr.
func NewProxy(frontendAddr *vsock.VsockAddr, backendAddr net.Addr) (Proxy, error) {
// NewVsockProxy creates a Proxy listening on Vsock
func NewVsockProxy(frontendAddr *vsock.VsockAddr, backendAddr net.Addr) (Proxy, error) {
switch backendAddr.(type) {
case *net.UDPAddr:
listener, err := vsock.Listen(frontendAddr.Port)
@ -44,3 +44,29 @@ func NewProxy(frontendAddr *vsock.VsockAddr, backendAddr net.Addr) (Proxy, error
panic(fmt.Errorf("Unsupported protocol"))
}
}
// NewIPProxy creates a Proxy according to the specified frontendAddr and backendAddr.
func NewIPProxy(frontendAddr, backendAddr net.Addr) (Proxy, error) {
switch frontendAddr.(type) {
case *net.UDPAddr:
listener, err := net.ListenUDP("udp", frontendAddr.(*net.UDPAddr))
if err != nil {
return nil, err
}
return NewUDPProxy(frontendAddr, listener, backendAddr.(*net.UDPAddr))
case *net.TCPAddr:
listener, err := net.Listen("tcp", frontendAddr.String())
if err != nil {
return nil, err
}
return NewTCPProxy(listener, backendAddr.(*net.TCPAddr))
case *vsock.VsockAddr:
listener, err := vsock.Listen(frontendAddr.(*vsock.VsockAddr).Port)
if err != nil {
return nil, err
}
return NewTCPProxy(listener, backendAddr.(*net.TCPAddr))
default:
panic(fmt.Errorf("Unsupported protocol"))
}
}

12
alpine/packages/proxy/main.go
View File

@ -14,19 +14,25 @@ import (
func main() {
host, port, container := parseHostContainerAddrs()
p, err := libproxy.NewProxy(&vsock.VsockAddr{Port: uint(port)}, container)
vsockP, err := libproxy.NewVsockProxy(&vsock.VsockAddr{Port: uint(port)}, container)
if err != nil {
sendError(err)
}
ipP, err := libproxy.NewIPProxy(host, container)
if err != nil {
sendError(err)
}
ctl, err := exposePort(host, port)
if err != nil {
sendError(err)
}
go handleStopSignals(p)
go handleStopSignals(ipP)
// TODO: avoid this line if we are running in a TTY
sendOK()
p.Run()
go ipP.Run()
vsockP.Run()
ctl.Close() // ensure ctl remains alive and un-GCed until here
os.Exit(0)
}