Cannot use `swtpm` with unix socket

[susnux]

When trying to simply connect to a swtpm instance using an unix socket, the parsing fails and falls back to default TCP.

Given:

let device = TctiNameConf::from_str("swtpm:path=/tmp/vtpm").unwrap();

// create the context for the TPM device
let mut context = Context::new(device)
	.expect("Failed to create context for TPM device");

It returns this error:

WARNING:tcti:src/util-io/io.c:262:socket_connect() Failed to connect to host 127.0.0.1, port 2321: errno 111: Connection refused
ERROR:tcti:src/tss2-tcti/tcti-swtpm.c:617:Tss2_Tcti_Swtpm_Init() Cannot connect to swtpm TPM socket
ERROR:tcti:src/tss2-tcti/tctildr-dl.c:149:tcti_from_file() Could not initialize TCTI file: swtpm
ERROR:tcti:src/tss2-tcti/tctildr.c:477:tctildr_init_context_data() Failed to instantiate TCTI

ℹ️ I use the latest released version (v7.7.0).

[Superhepper]

Yes, I think that is a known limitation in 7.X. I think it have been fixed on main. Currently there are no plans on back porting (that I know of) because hopefully we will be releasing 8.0.0 (soon-ish). But if it something urgent that you need fixed I do not think it will that hard to accomplish it.