* Add spans to TeleportClient/ProxyClient/NodeSession
* Improve dialer tracing
* Alter default http client span name to include path
* propagate tracing options in NewClientConn
This adds proxy peering support. A configurable setting that allows for agents
to connect to a subset of proxies and be reachable through any proxy in the
cluster. This is achieved by creating grpc connections between each proxy
server. Client connections can then be passed between proxies to the desired
agent.
* Add tracing instrumentation for ssh clients/servers
Add tracing context to the existing ProxyHelloSignature to provide
span information across ssh connections. To add span context per
ssh session on top of new connections, the same tracing context is
passed in the first global request of the session.
In order to ensure that tracing context is pulled from and inserted
into the proper context.Context, some interfaces and methods were
changed to take one as the first argument.
* Respect timeout in `(directDial).DialTimeout`
* Add a Timeout to the api/client/webclient calls
* Respect timeout in (proxyDial).DialTimeout
* Applied suggestion
Co-authored-by: Alan Parra <alan.parra@goteleport.com>
Co-authored-by: Alan Parra <alan.parra@goteleport.com>
This change updates NO_PROXY handling to allow blocking specific host:port combinations, rather than just the host. It also adds a special case for downgrading requests to plain HTTP when --insecure is true and the request goes through a plain HTTP proxy at localhost (i.e. HTTP_PROXY=http://localhost).
* Added support for connecting API client through tunnel proxy and web proxy addresses (with identity file).
* Added concurrent dialing logic to dial several possible dialing combinations and seamlessly return the first client to connect.
All changes should be noop, except for
`integration/integration_test.go`.
The integration test was ignoring `recordingMode` test case parameter
and always used `RecordAtNode`. When switching to `recordingMode`, test
cases with `RecordAtProxy` fail with a confusing error about missing
user agent. Filed https://github.com/gravitational/teleport/issues/3606
to track that separately and unblock enabling `structcheck` linter.
NO_PROXY or no_proxy environment variables
can be set to override variable HTTP_PROXY
or HTTPS_PROXY. Current implementation
is taken from Go standard library.
DialWithDeadline works around the case when net.DialWithTimeout
succeeds, but key exchange hangs. Setting deadline on connection
prevents this case from happening
rosstimothy