Support MacOS

[mxpv]

This PR adds MacOS support to TTRPC rust crate.

It uses conditional compilation to exclude vsock on non Linux platforms. And another difference is that MacOS doesn't support creation of a descriptor with CLOEXEC atomically, so this PR adds fcntl calls after.

client/server example running on MacOS:

``` Compiling ttrpc-example v0.2.0 (/Users/mxpv/Github/ttrpc-rust/example) Finished dev [unoptimized + debuginfo] target(s) in 4.58s Running `/Users/mxpv/Github/ttrpc-rust/target/debug/examples/server` [00:00:00.000] (10d15f600) INFO server listen started [00:00:00.000] (10d15f600) INFO server started Server is running, press Ctrl + C to exit [00:00:17.822] (700001891000) DEBUG Got new client [00:00:17.822] (700001e9a000) TRACE Got Message header MessageHeader { length: 91, stream_id: 1, type_: 1, flags: 0 } [00:00:17.822] (700001e9a000) TRACE Got Message body [10, 17, 103, 114, 112, 99, 46, 65, 103, 101, 110, 116, 83, 101, 114, 118, 105, 99, 101, 18, 12, 79, 110, 108, 105, 110, 101, 67, 80, 85, 77, 101, 109, 42, 18, 10, 5, 107, 101, 121, 45, 49, 18, 9, 118, 97, 108, 117, 101, 45, 49, 45, 49, 42, 18, 10, 5, 107, 101, 121, 45, 49, 18, 9, 118, 97, 108, 117, 101, 45, 49, 45, 50, 42, 16, 10, 5, 107, 101, 121, 45, 50, 18, 7, 118, 97, 108, 117, 101, 45, 50] [00:00:17.822] (70000209d000) TRACE Got Message header MessageHeader { length: 93, stream_id: 3, type_: 1, flags: 0 } [00:00:17.822] (700001e9a000) TRACE Got Message request service: "grpc.AgentService" method: "OnlineCPUMem" metadata {key: "key-1" value: "value-1-1"} metadata {key: "key-1" value: "value-1-2"} metadata {key: "key-2" value: "value-2"} [00:00:17.823] (70000209d000) TRACE Got Message body [10, 17, 103, 114, 112, 99, 46, 65, 103, 101, 110, 116, 83, 101, 114, 118, 105, 99, 101, 18, 14, 76, 105, 115, 116, 73, 110, 116, 101, 114, 102, 97, 99, 101, 115, 42, 16, 10, 5, 107, 101, 121, 45, 50, 18, 7, 118, 97, 108, 117, 101, 45, 50, 42, 18, 10, 5, 107, 101, 121, 45, 49, 18, 9, 118, 97, 108, 117, 101, 45, 49, 45, 49, 42, 18, 10, 5, 107, 101, 121, 45, 49, 18, 9, 118, 97, 108, 117, 101, 45, 49, 45, 50] [00:00:17.825] (700001c97000) TRACE response thread get (MessageHeader { length: 54, stream_id: 1, type_: 2, flags: 0 }, [10, 52, 8, 5, 18, 48, 47, 103, 114, 112, 99, 46, 65, 103, 101, 110, 116, 83, 101, 114, 118, 105, 99, 101, 47, 79, 110, 108, 105, 110, 101, 67, 80, 85, 77, 101, 109, 32, 105, 115, 32, 110, 111, 116, 32, 115, 117, 112, 112, 111, 114, 116, 101, 100]) [00:00:17.826] (7000022a0000) TRACE Got Message header MessageHeader { length: 78, stream_id: 5, type_: 1, flags: 0 } [00:00:17.826] (70000209d000) TRACE Got Message request service: "grpc.AgentService" method: "ListInterfaces" metadata {key: "key-2" value: "value-2"} metadata {key: "key-1" value: "value-1-1"} metadata {key: "key-1" value: "value-1-2"} [00:00:17.826] (7000022a0000) TRACE Got Message body [10, 11, 103, 114, 112, 99, 46, 72, 101, 97, 108, 116, 104, 18, 5, 67, 104, 101, 99, 107, 42, 18, 10, 5, 107, 101, 121, 45, 49, 18, 9, 118, 97, 108, 117, 101, 45, 49, 45, 49, 42, 18, 10, 5, 107, 101, 121, 45, 49, 18, 9, 118, 97, 108, 117, 101, 45, 49, 45, 50, 42, 16, 10, 5, 107, 101, 121, 45, 50, 18, 7, 118, 97, 108, 117, 101, 45, 50] [00:00:17.826] (700001c97000) TRACE response thread get (MessageHeader { length: 23, stream_id: 3, type_: 2, flags: 0 }, [10, 0, 18, 19, 10, 7, 18, 5, 102, 105, 114, 115, 116, 10, 8, 18, 6, 115, 101, 99, 111, 110, 100]) [00:00:17.826] (7000022a0000) TRACE Got Message request service: "grpc.Health" method: "Check" metadata {key: "key-1" value: "value-1-1"} metadata {key: "key-1" value: "value-1-2"} metadata {key: "key-2" value: "value-2"} [00:00:17.826] (700001c97000) TRACE response thread get (MessageHeader { length: 18, stream_id: 5, type_: 2, flags: 0 }, [10, 16, 8, 5, 18, 12, 74, 117, 115, 116, 32, 102, 111, 114, 32, 102, 117, 110]) [00:00:19.828] (700001e9a000) TRACE Got Message header MessageHeader { length: 80, stream_id: 7, type_: 1, flags: 0 } [00:00:19.828] (700001e9a000) TRACE Got Message body [10, 11, 103, 114, 112, 99, 46, 72, 101, 97, 108, 116, 104, 18, 7, 86, 101, 114, 115, 105, 111, 110, 42, 16, 10, 5, 107, 101, 121, 45, 50, 18, 7, 118, 97, 108, 117, 101, 45, 50, 42, 18, 10, 5, 107, 101, 121, 45, 49, 18, 9, 118, 97, 108, 117, 101, 45, 49, 45, 49, 42, 18, 10, 5, 107, 101, 121, 45, 49, 18, 9, 118, 97, 108, 117, 101, 45, 49, 45, 50] [00:00:19.828] (700001e9a000) TRACE Got Message request service: "grpc.Health" method: "Version" metadata {key: "key-2" value: "value-2"} metadata {key: "key-1" value: "value-1-1"} metadata {key: "key-1" value: "value-1-2"} [00:00:19.828] (700001e9a000) INFO version [00:00:19.828] (700001e9a000) INFO ctx TtrpcContext { fd: 8, mh: MessageHeader { length: 80, stream_id: 7, type_: 1, flags: 0 }, res_tx: Sender { .. }, metadata: {"key-1": ["value-1-1", "value-1-2"], "key-2": ["value-2"]}, timeout_nano: 0 } [00:00:19.828] (700001c97000) TRACE response thread get (MessageHeader { length: 21, stream_id: 7, type_: 2, flags: 0 }, [10, 0, 18, 17, 10, 5, 48, 46, 48, 46, 49, 18, 8, 109, 111, 99, 107, 46, 48, 46, 49]) [00:00:19.836] (70000209d000) TRACE Socket error socket disconnected [00:00:19.836] (70000209d000) TRACE Socket error send control_tx [00:00:19.836] (7000022a0000) DEBUG Failed to send SendError { .. } [00:00:19.836] (700001e9a000) DEBUG Failed to send SendError { .. } [00:00:19.836] (700001c97000) TRACE response thread quit [00:00:19.836] (700001891000) DEBUG client thread quit Compiling ttrpc-example v0.2.0 (/Users/mxpv/Github/ttrpc-rust/example) Finished dev [unoptimized + debuginfo] target(s) in 2.62s Running `/Users/mxpv/Github/ttrpc-rust/target/debug/examples/client` Main OS Thread - agent.online_cpu_mem() started: 27.313µs OS Thread ThreadId(4) - health.check() started: 47.316µs OS Thread ThreadId(5) - agent.list_interfaces() started: 67.736µs Main OS Thread - agent.online_cpu_mem() -> RpcStatus(code: NOT_FOUND message: "/grpc.AgentService/OnlineCPUMem is not supported") ended: 4.485696ms sleep 2 seconds ... OS Thread ThreadId(4) - health.check() -> Err(RpcStatus(code: NOT_FOUND message: "Just for fun")) ended: 4.629423ms OS Thread ThreadId(5) - agent.list_interfaces() -> Interfaces {name: "first"} Interfaces {name: "second"} ended: 5.419261ms Main OS Thread - health.version() started: 2.005767967s Main OS Thread - health.version() -> Ok(grpc_version: "0.0.1" agent_version: "mock.0.1") ended: 2.014094586s ```

Signed-off-by: Maksym Pavlenko pavlenko.maksym@gmail.com

[mxpv]

~I've added MacOS target to CI and it somehow confuses Github Actions. I found a couple suggestions here, but don't have access to repo settings.~

Fixed in repo settings.

[Tim-Zhang]

@mxpv Thanks for your contribution, I have inited you as a admin team member, so that you can config the CI by yourself.