initialConnection retries multiple times to establish the TCP connection
which will be used for ssh communication.
This commit adds a generic helper to handle the retry which will be
useful in the next commits.
Signed-off-by: Christophe Fergeau <cfergeau@redhat.com>
Some channel/connection implementations may signal EOF to parallel
readers before tasks related to the CloseWrite (shutdown) have
completed progressing. This creates the potential for a race with
a parallel Close(), leading to a premature abort of certain activies
(cancelling the send of buffered data).
This change ensures that the two goroutines copying each direction
of the stream wait until CloseWrite has completed in both directions
before fully closing.
Signed-off-by: Jason T. Greene <jason.greene@redhat.com>
With this PR expose API can handle npipe as a protocol which is used
in windows to expose socket to named pipe.
Following is now working. (Tested with CRC)
```
--- captured from the VM ---
$ curl http://host.crc.testing:7777/services/forwarder/all | jq .
[
{
"local": "127.0.0.1:2222",
"remote": "192.168.127.2:22",
"protocol": "tcp"
},
{
"local": "127.0.0.1:9090",
"remote": "192.168.127.2:9090",
"protocol": "tcp"
},
{
"local": "\\\\.\\pipe\\crc-podman",
"remote": "ssh-tunnel://core@192.168.127.2:22/run/podman/podman.sock?key=C%3A%5CUsers%5Cprkumar%5C.crc%5Cmachines%5Ccrc%5Cid_ecdsa",
"protocol": "npipe"
}
]
\\.\pipe\crc-http - - [23/Feb/2022:10:38:20 +0530] "POST
/network/services/forwarder/expose HTTP/1.1" 200 0
INFO Listening on: \\.\pipe\crc-podman
> $Env:DOCKER_HOST = "npipe:////./pipe/crc-podman"
> .\docker.exe info
Client:
Context: default
Debug Mode: false
Server:
Containers: 1
Running: 1
Paused: 0
Server Version: 3.4.4
Storage Driver: overlay
Backing Filesystem: xfs
Supports d_type: true
```
Signed-off-by: Praveen Kumar <kumarpraveen.nitdgp@gmail.com>
Signed-off-by: Christophe Fergeau <cfergeau@redhat.com>
Also:
- Introduce cleanup mechanism for unexpose
- Minor enhancement to bastion/forwarder to support tunnel only operation
Signed-off-by: Jason T. Greene <jason.greene@redhat.com>
