port: add ChildIP #206
port: add ChildIP #206
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it is needed for Podman: containers/podman#5138 |
This doesn't seem to be able to propagate src IP. Wouldn't this just make the src IP to 10.0.2.100 ? |
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Yes, it won't propagate the srcIP but at least we can set it to something different than 127.0.0.1 that causes issues with some container images |
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@AkihiroSuda are you fine with the change as it is? |
| @@ -106,7 +106,11 @@ func (d *childDriver) handleConnectRequest(c *net.UnixConn, req *msg.Request) er | |||
| return errors.Errorf("unknown proto: %q", req.Proto) | |||
| } | |||
| var dialer net.Dialer | |||
| targetConn, err := dialer.Dial(req.Proto, fmt.Sprintf("127.0.0.1:%d", req.Port)) | |||
| ip := req.IP | |||
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We need to verify that this is a valid IPv4 string
| if ip == "" { | ||
| ip = "127.0.0.1" | ||
| } | ||
| targetConn, err := dialer.Dial(req.Proto, fmt.Sprintf("%s:%d", ip, req.Port)) |
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Could you also update pkg/port/{slirp4netns,socat}?
pkg/port/port.go
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| @@ -10,6 +10,7 @@ type Spec struct { | |||
| ParentIP string `json:"parentIP,omitempty"` // IPv4 address. can be empty (0.0.0.0). | |||
| ParentPort int `json:"parentPort,omitempty"` | |||
| ChildPort int `json:"childPort,omitempty"` | |||
| ChildIP string `json:"childIP,omitempty"` | |||
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Please add godoc comment to clarify that this defaults to 127.0.0.1
allow users to override the IP to use for the connection inside the network namespace. It is useful e.g. with slirp4netns to override the IP to "10.0.2.100". Signed-off-by: Giuseppe Scrivano <[email protected]>
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thanks for the review. I've addressed your comments and pushed a new version |
Signed-off-by: Akihiro Suda <[email protected]>
follow-up for "port: add ChildIP" (#206) + release v0.12.0
Signed-off-by: Akihiro Suda <[email protected]>
allow users to override the IP to use for the connection inside the
network namespace.
It is useful e.g. with slirp4netns to override the IP to "10.0.2.100".
Signed-off-by: Giuseppe Scrivano [email protected]