Wire up client to talk to server
This commit is contained in:
parent
c26d86411c
commit
10de92a685
GPG key ID:
BDA47A31A3C8EE6B
1
.gitignore
vendored
1
.gitignore
vendored
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@ -1,3 +1,4 @@
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.direnv
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sytest
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node_modules
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/target
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1
.tokeignore
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1
.tokeignore
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@ -0,0 +1 @@
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package-lock.json
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4141
Cargo.lock
generated
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4141
Cargo.lock
generated
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File diff suppressed because it is too large
Load diff
6
Cargo.toml
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6
Cargo.toml
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@ -0,0 +1,6 @@
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[workspace]
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members = [
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"common",
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"server",
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"client/src-tauri",
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]
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@ -1,16 +1,14 @@
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[package]
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name = "app"
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name = "mraow-client"
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version = "0.1.0"
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description = "A Tauri App"
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authors = ["you"]
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license = ""
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repository = ""
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default-run = "app"
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default-run = "mraow-client"
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edition = "2021"
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rust-version = "1.60"
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# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
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[build-dependencies]
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tauri-build = { version = "1.3.0", features = [] }
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@ -19,8 +17,13 @@ serde_json = "1.0"
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serde = { version = "1.0", features = ["derive"] }
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tauri = { version = "1.3.0", features = [] }
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mraow-common = { path = "../../common" }
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tokio = { version = "1.28.0", features = ["full"] }
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anyhow = "1.0.71"
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[features]
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default = ["mraow-common/client"]
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# this feature is used for production builds or when `devPath` points to the filesystem and the built-in dev server is disabled.
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# If you use cargo directly instead of tauri's cli you can use this feature flag to switch between tauri's `dev` and `build` modes.
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# DO NOT REMOVE!!
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custom-protocol = [ "tauri/custom-protocol" ]
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custom-protocol = ["tauri/custom-protocol"]
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@ -1,8 +1,25 @@
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// Prevents additional console window on Windows in release, DO NOT REMOVE!!
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#![cfg_attr(not(debug_assertions), windows_subsystem = "windows")]
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fn main() {
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use anyhow::Result;
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use mraow_common::chat_proto::{greeter_client::GreeterClient, HelloRequest};
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#[tokio::main]
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async fn main() -> Result<()> {
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tauri::async_runtime::set(tokio::runtime::Handle::current());
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let mut greeter_client = GreeterClient::connect("http://[::1]:50051").await?;
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println!("Connected :)");
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let response = greeter_client.say_hello(HelloRequest {
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name: "helosu".into(),
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}).await?;
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println!("Response: {response:?}");
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tauri::Builder::default()
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.run(tauri::generate_context!())
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.expect("error while running tauri application");
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Ok(())
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}
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16
common/Cargo.toml
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16
common/Cargo.toml
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@ -0,0 +1,16 @@
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[package]
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name = "mraow-common"
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version = "0.1.0"
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edition = "2021"
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[features]
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default = []
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server = []
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client = []
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[dependencies]
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prost = "0.11.9"
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tonic = "0.9.2"
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[build-dependencies]
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tonic-build = "0.9.2"
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7
common/build.rs
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7
common/build.rs
Normal file
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@ -0,0 +1,7 @@
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fn main() {
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tonic_build::configure()
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.server_mod_attribute("attrs", "#[cfg(feature = \"server\")]")
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.client_mod_attribute("attrs", "#[cfg(feature = \"client\")]")
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.compile(&["../proto/chat.proto"], &["../proto"])
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.unwrap();
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}
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3
common/src/lib.rs
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3
common/src/lib.rs
Normal file
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@ -0,0 +1,3 @@
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pub mod chat_proto {
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tonic::include_proto!("chat");
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}
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11
flake.nix
11
flake.nix
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@ -22,8 +22,15 @@
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devShell = pkgs.mkShell {
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# inputsFrom = with flakePkgs; [ client ];
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packages = (with pkgs; [ pkg-config perl openssl ])
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++ (with toolchain; [ rustc cargo ]);
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packages =
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(with pkgs; [ pkg-config perl openssl protobuf clang-tools ])
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++ (with toolchain; [
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rustc
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cargo
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# Get the nightly version of rustfmt so we can wrap comments
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pkgs.fenix.default.rustfmt
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]);
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# ++ (with pkgs.perl536Packages; [
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# CPAN
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# EmailMIME
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@ -1,14 +1,44 @@
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syntax = "proto3";
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package chat;
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import "google/protobuf/empty.proto";
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message ChatMessage {
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string from = 1;
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string msg = 2;
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string time = 3;
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}
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message UserList {}
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message User {
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}
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message JoinResponse {
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}
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service ChatService {
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rpc join(User) returns (JoinResponse) {}
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rpc sendMsg(ChatMessage) returns (Empty) {}
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rpc receiveMsg(Empty) returns (stream ChatMessage) {}
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rpc getAllUsers(Empty) returns (UserList) {}
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}
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rpc sendMsg(ChatMessage) returns (google.protobuf.Empty) {}
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rpc receiveMsg(google.protobuf.Empty) returns (stream ChatMessage) {}
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rpc getAllUsers(google.protobuf.Empty) returns (UserList) {}
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}
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// Hello world shit
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// The greeting service definition.
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service Greeter {
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// Sends a greeting
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rpc SayHello (HelloRequest) returns (HelloReply) {}
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}
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// The request message containing the user's name.
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message HelloRequest {
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string name = 1;
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}
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// The response message containing the greetings
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message HelloReply {
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string message = 1;
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}
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720
server/Cargo.lock
generated
720
server/Cargo.lock
generated
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@ -1,720 +0,0 @@
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# This file is automatically @generated by Cargo.
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# It is not intended for manual editing.
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version = 3
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[[package]]
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name = "ahash"
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version = "0.7.6"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "fcb51a0695d8f838b1ee009b3fbf66bda078cd64590202a864a8f3e8c4315c47"
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dependencies = [
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||||
"getrandom",
|
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"once_cell",
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"version_check",
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]
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[[package]]
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name = "autocfg"
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version = "1.1.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "d468802bab17cbc0cc575e9b053f41e72aa36bfa6b7f55e3529ffa43161b97fa"
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[[package]]
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name = "bitflags"
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version = "1.3.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
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|
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[[package]]
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name = "bytes"
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version = "1.4.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "89b2fd2a0dcf38d7971e2194b6b6eebab45ae01067456a7fd93d5547a61b70be"
|
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[[package]]
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name = "cfg-if"
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version = "1.0.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
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[[package]]
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name = "futures"
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version = "0.3.28"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "23342abe12aba583913b2e62f22225ff9c950774065e4bfb61a19cd9770fec40"
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dependencies = [
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"futures-channel",
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"futures-core",
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"futures-executor",
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"futures-io",
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"futures-sink",
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"futures-task",
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"futures-util",
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]
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[[package]]
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name = "futures-channel"
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||||
version = "0.3.28"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
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||||
checksum = "955518d47e09b25bbebc7a18df10b81f0c766eaf4c4f1cccef2fca5f2a4fb5f2"
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dependencies = [
|
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"futures-core",
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"futures-sink",
|
||||
]
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|
||||
[[package]]
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name = "futures-core"
|
||||
version = "0.3.28"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "4bca583b7e26f571124fe5b7561d49cb2868d79116cfa0eefce955557c6fee8c"
|
||||
|
||||
[[package]]
|
||||
name = "futures-executor"
|
||||
version = "0.3.28"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "ccecee823288125bd88b4d7f565c9e58e41858e47ab72e8ea2d64e93624386e0"
|
||||
dependencies = [
|
||||
"futures-core",
|
||||
"futures-task",
|
||||
"futures-util",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "futures-io"
|
||||
version = "0.3.28"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "4fff74096e71ed47f8e023204cfd0aa1289cd54ae5430a9523be060cdb849964"
|
||||
|
||||
[[package]]
|
||||
name = "futures-macro"
|
||||
version = "0.3.28"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "89ca545a94061b6365f2c7355b4b32bd20df3ff95f02da9329b34ccc3bd6ee72"
|
||||
dependencies = [
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"syn",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "futures-sink"
|
||||
version = "0.3.28"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "f43be4fe21a13b9781a69afa4985b0f6ee0e1afab2c6f454a8cf30e2b2237b6e"
|
||||
|
||||
[[package]]
|
||||
name = "futures-task"
|
||||
version = "0.3.28"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "76d3d132be6c0e6aa1534069c705a74a5997a356c0dc2f86a47765e5617c5b65"
|
||||
|
||||
[[package]]
|
||||
name = "futures-util"
|
||||
version = "0.3.28"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "26b01e40b772d54cf6c6d721c1d1abd0647a0106a12ecaa1c186273392a69533"
|
||||
dependencies = [
|
||||
"futures-channel",
|
||||
"futures-core",
|
||||
"futures-io",
|
||||
"futures-macro",
|
||||
"futures-sink",
|
||||
"futures-task",
|
||||
"memchr",
|
||||
"pin-project-lite",
|
||||
"pin-utils",
|
||||
"slab",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "getrandom"
|
||||
version = "0.2.9"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "c85e1d9ab2eadba7e5040d4e09cbd6d072b76a557ad64e797c2cb9d4da21d7e4"
|
||||
dependencies = [
|
||||
"cfg-if",
|
||||
"libc",
|
||||
"wasi",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "hashbrown"
|
||||
version = "0.12.3"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "8a9ee70c43aaf417c914396645a0fa852624801b24ebb7ae78fe8272889ac888"
|
||||
dependencies = [
|
||||
"ahash",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "hermit-abi"
|
||||
version = "0.2.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "ee512640fe35acbfb4bb779db6f0d80704c2cacfa2e39b601ef3e3f47d1ae4c7"
|
||||
dependencies = [
|
||||
"libc",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "lazy_static"
|
||||
version = "1.4.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
|
||||
|
||||
[[package]]
|
||||
name = "libc"
|
||||
version = "0.2.142"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "6a987beff54b60ffa6d51982e1aa1146bc42f19bd26be28b0586f252fccf5317"
|
||||
|
||||
[[package]]
|
||||
name = "lock_api"
|
||||
version = "0.4.9"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "435011366fe56583b16cf956f9df0095b405b82d76425bc8981c0e22e60ec4df"
|
||||
dependencies = [
|
||||
"autocfg",
|
||||
"scopeguard",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "log"
|
||||
version = "0.4.17"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "abb12e687cfb44aa40f41fc3978ef76448f9b6038cad6aef4259d3c095a2382e"
|
||||
dependencies = [
|
||||
"cfg-if",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "matchers"
|
||||
version = "0.1.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "8263075bb86c5a1b1427b5ae862e8889656f126e9f77c484496e8b47cf5c5558"
|
||||
dependencies = [
|
||||
"regex-automata",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "memchr"
|
||||
version = "2.5.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "2dffe52ecf27772e601905b7522cb4ef790d2cc203488bbd0e2fe85fcb74566d"
|
||||
|
||||
[[package]]
|
||||
name = "mio"
|
||||
version = "0.8.6"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "5b9d9a46eff5b4ff64b45a9e316a6d1e0bc719ef429cbec4dc630684212bfdf9"
|
||||
dependencies = [
|
||||
"libc",
|
||||
"log",
|
||||
"wasi",
|
||||
"windows-sys 0.45.0",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "nu-ansi-term"
|
||||
version = "0.46.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "77a8165726e8236064dbb45459242600304b42a5ea24ee2948e18e023bf7ba84"
|
||||
dependencies = [
|
||||
"overload",
|
||||
"winapi",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "num_cpus"
|
||||
version = "1.15.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "0fac9e2da13b5eb447a6ce3d392f23a29d8694bff781bf03a16cd9ac8697593b"
|
||||
dependencies = [
|
||||
"hermit-abi",
|
||||
"libc",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "once_cell"
|
||||
version = "1.17.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "b7e5500299e16ebb147ae15a00a942af264cf3688f47923b8fc2cd5858f23ad3"
|
||||
|
||||
[[package]]
|
||||
name = "overload"
|
||||
version = "0.1.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "b15813163c1d831bf4a13c3610c05c0d03b39feb07f7e09fa234dac9b15aaf39"
|
||||
|
||||
[[package]]
|
||||
name = "parking_lot"
|
||||
version = "0.12.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "3742b2c103b9f06bc9fff0a37ff4912935851bee6d36f3c02bcc755bcfec228f"
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||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "622a1962a7db830d6fd0a69683c80a18fda201879f0f447f065a3b7467daa241"
|
||||
|
||||
[[package]]
|
||||
name = "windows_i686_msvc"
|
||||
version = "0.42.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "44d840b6ec649f480a41c8d80f9c65108b92d89345dd94027bfe06ac444d1060"
|
||||
|
||||
[[package]]
|
||||
name = "windows_i686_msvc"
|
||||
version = "0.48.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "4542c6e364ce21bf45d69fdd2a8e455fa38d316158cfd43b3ac1c5b1b19f8e00"
|
||||
|
||||
[[package]]
|
||||
name = "windows_x86_64_gnu"
|
||||
version = "0.42.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "8de912b8b8feb55c064867cf047dda097f92d51efad5b491dfb98f6bbb70cb36"
|
||||
|
||||
[[package]]
|
||||
name = "windows_x86_64_gnu"
|
||||
version = "0.48.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "ca2b8a661f7628cbd23440e50b05d705db3686f894fc9580820623656af974b1"
|
||||
|
||||
[[package]]
|
||||
name = "windows_x86_64_gnullvm"
|
||||
version = "0.42.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "26d41b46a36d453748aedef1486d5c7a85db22e56aff34643984ea85514e94a3"
|
||||
|
||||
[[package]]
|
||||
name = "windows_x86_64_gnullvm"
|
||||
version = "0.48.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "7896dbc1f41e08872e9d5e8f8baa8fdd2677f29468c4e156210174edc7f7b953"
|
||||
|
||||
[[package]]
|
||||
name = "windows_x86_64_msvc"
|
||||
version = "0.42.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "9aec5da331524158c6d1a4ac0ab1541149c0b9505fde06423b02f5ef0106b9f0"
|
||||
|
||||
[[package]]
|
||||
name = "windows_x86_64_msvc"
|
||||
version = "0.48.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "1a515f5799fe4961cb532f983ce2b23082366b898e52ffbce459c86f67c8378a"
|
||||
|
|
@ -1,14 +1,25 @@
|
|||
[package]
|
||||
name = "server"
|
||||
name = "mraow-server"
|
||||
version = "0.1.0"
|
||||
edition = "2021"
|
||||
|
||||
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
|
||||
[features]
|
||||
default = ["mraow-common/server"]
|
||||
|
||||
[dependencies]
|
||||
anyhow = "1.0.71"
|
||||
futures = "0.3.28"
|
||||
hyper = { version = "0.14.26", features = ["http2", "full"] }
|
||||
prost = "0.11.9"
|
||||
tokio = { version = "1.28.0", features = ["full"] }
|
||||
tokio-stream = { version = "0.1.14", features = ["full"] }
|
||||
tokio-util = { version = "0.7.8", features = ["full"] }
|
||||
tonic = "0.9.2"
|
||||
tower = { version = "0.4.13", features = ["full"] }
|
||||
tracing = "0.1.37"
|
||||
tracing-subscriber = { version = "0.3.17", features = ["env-filter"] }
|
||||
|
||||
mraow-common = { path = "../common" }
|
||||
|
||||
[build-dependencies]
|
||||
tonic-build = "0.9.2"
|
||||
|
|
|
|||
|
|
@ -1,222 +1,116 @@
|
|||
mod room;
|
||||
use hyper::Body;
|
||||
use std::{
|
||||
task::{Context, Poll},
|
||||
time::Duration,
|
||||
};
|
||||
use tonic::{body::BoxBody, transport::Server, Request, Response, Status};
|
||||
use tower::{Layer, Service};
|
||||
|
||||
use tokio::net::{TcpListener, TcpStream};
|
||||
use tokio::sync::{mpsc, Mutex};
|
||||
use tokio_stream::StreamExt;
|
||||
use tokio_util::codec::{Framed, LinesCodec};
|
||||
use mraow_common::chat_proto::{
|
||||
greeter_server::{Greeter, GreeterServer},
|
||||
HelloReply, HelloRequest,
|
||||
};
|
||||
|
||||
use futures::SinkExt;
|
||||
use std::collections::HashMap;
|
||||
use std::env;
|
||||
use std::error::Error;
|
||||
use std::io;
|
||||
use std::net::SocketAddr;
|
||||
use std::sync::Arc;
|
||||
#[derive(Default)]
|
||||
pub struct MyGreeter {}
|
||||
|
||||
#[tonic::async_trait]
|
||||
impl Greeter for MyGreeter {
|
||||
async fn say_hello(
|
||||
&self,
|
||||
request: Request<HelloRequest>,
|
||||
) -> Result<Response<HelloReply>, Status> {
|
||||
println!("Got a request from {:?}", request.remote_addr());
|
||||
|
||||
let reply = HelloReply {
|
||||
message: format!("Hello {}!", request.into_inner().name),
|
||||
};
|
||||
Ok(Response::new(reply))
|
||||
}
|
||||
}
|
||||
|
||||
#[tokio::main]
|
||||
async fn main() -> Result<(), Box<dyn Error>> {
|
||||
use tracing_subscriber::{fmt::format::FmtSpan, EnvFilter};
|
||||
// Configure a `tracing` subscriber that logs traces emitted by the chat
|
||||
// server.
|
||||
tracing_subscriber::fmt()
|
||||
// Filter what traces are displayed based on the RUST_LOG environment
|
||||
// variable.
|
||||
//
|
||||
// Traces emitted by the example code will always be displayed. You
|
||||
// can set `RUST_LOG=tokio=trace` to enable additional traces emitted by
|
||||
// Tokio itself.
|
||||
.with_env_filter(
|
||||
EnvFilter::from_default_env().add_directive("chat=info".parse()?),
|
||||
)
|
||||
// Log events when `tracing` spans are created, entered, exited, or
|
||||
// closed. When Tokio's internal tracing support is enabled (as
|
||||
// described above), this can be used to track the lifecycle of spawned
|
||||
// tasks on the Tokio runtime.
|
||||
.with_span_events(FmtSpan::FULL)
|
||||
// Set this subscriber as the default, to collect all traces emitted by
|
||||
// the program.
|
||||
.init();
|
||||
async fn main() -> Result<(), Box<dyn std::error::Error>> {
|
||||
let addr = "[::1]:50051".parse().unwrap();
|
||||
let greeter = MyGreeter::default();
|
||||
|
||||
// Create the shared state. This is how all the peers communicate.
|
||||
//
|
||||
// The server task will hold a handle to this. For every new client, the
|
||||
// `state` handle is cloned and passed into the task that processes the
|
||||
// client connection.
|
||||
let state = Arc::new(Mutex::new(Shared::new()));
|
||||
println!("GreeterServer listening on {}", addr);
|
||||
|
||||
let addr = env::args()
|
||||
.nth(1)
|
||||
.unwrap_or_else(|| "127.0.0.1:6142".to_string());
|
||||
let svc = GreeterServer::new(greeter);
|
||||
|
||||
// Bind a TCP listener to the socket address.
|
||||
//
|
||||
// Note that this is the Tokio TcpListener, which is fully async.
|
||||
let listener = TcpListener::bind(&addr).await?;
|
||||
// The stack of middleware that our service will be wrapped in
|
||||
let layer = tower::ServiceBuilder::new()
|
||||
// Apply middleware from tower
|
||||
.timeout(Duration::from_secs(30))
|
||||
// Apply our own middleware
|
||||
.layer(MyMiddlewareLayer::default())
|
||||
// Interceptors can be also be applied as middleware
|
||||
.layer(tonic::service::interceptor(intercept))
|
||||
.into_inner();
|
||||
|
||||
tracing::info!("server running on {}", addr);
|
||||
|
||||
loop {
|
||||
// Asynchronously wait for an inbound TcpStream.
|
||||
let (stream, addr) = listener.accept().await?;
|
||||
|
||||
// Clone a handle to the `Shared` state for the new connection.
|
||||
let state = Arc::clone(&state);
|
||||
|
||||
// Spawn our handler to be run asynchronously.
|
||||
tokio::spawn(async move {
|
||||
tracing::debug!("accepted connection");
|
||||
if let Err(e) = process(state, stream, addr).await {
|
||||
tracing::info!("an error occurred; error = {:?}", e);
|
||||
}
|
||||
});
|
||||
}
|
||||
}
|
||||
|
||||
/// Shorthand for the transmit half of the message channel.
|
||||
type Tx = mpsc::UnboundedSender<String>;
|
||||
|
||||
/// Shorthand for the receive half of the message channel.
|
||||
type Rx = mpsc::UnboundedReceiver<String>;
|
||||
|
||||
/// Data that is shared between all peers in the chat server.
|
||||
///
|
||||
/// This is the set of `Tx` handles for all connected clients. Whenever a
|
||||
/// message is received from a client, it is broadcasted to all peers by
|
||||
/// iterating over the `peers` entries and sending a copy of the message on each
|
||||
/// `Tx`.
|
||||
struct Shared {
|
||||
peers: HashMap<SocketAddr, Tx>,
|
||||
}
|
||||
|
||||
/// The state for each connected client.
|
||||
struct Peer {
|
||||
/// The TCP socket wrapped with the `Lines` codec, defined below.
|
||||
///
|
||||
/// This handles sending and receiving data on the socket. When using
|
||||
/// `Lines`, we can work at the line level instead of having to manage the
|
||||
/// raw byte operations.
|
||||
lines: Framed<TcpStream, LinesCodec>,
|
||||
|
||||
/// Receive half of the message channel.
|
||||
///
|
||||
/// This is used to receive messages from peers. When a message is received
|
||||
/// off of this `Rx`, it will be written to the socket.
|
||||
rx: Rx,
|
||||
}
|
||||
|
||||
impl Shared {
|
||||
/// Create a new, empty, instance of `Shared`.
|
||||
fn new() -> Self {
|
||||
Shared {
|
||||
peers: HashMap::new(),
|
||||
}
|
||||
}
|
||||
|
||||
/// Send a `LineCodec` encoded message to every peer, except
|
||||
/// for the sender.
|
||||
async fn broadcast(&mut self, sender: SocketAddr, message: &str) {
|
||||
for peer in self.peers.iter_mut() {
|
||||
if *peer.0 != sender {
|
||||
let _ = peer.1.send(message.into());
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl Peer {
|
||||
/// Create a new instance of `Peer`.
|
||||
async fn new(
|
||||
state: Arc<Mutex<Shared>>,
|
||||
lines: Framed<TcpStream, LinesCodec>,
|
||||
) -> io::Result<Peer> {
|
||||
// Get the client socket address
|
||||
let addr = lines.get_ref().peer_addr()?;
|
||||
|
||||
// Create a channel for this peer
|
||||
let (tx, rx) = mpsc::unbounded_channel();
|
||||
|
||||
// Add an entry for this `Peer` in the shared state map.
|
||||
state.lock().await.peers.insert(addr, tx);
|
||||
|
||||
Ok(Peer { lines, rx })
|
||||
}
|
||||
}
|
||||
|
||||
/// Process an individual chat client
|
||||
async fn process(
|
||||
state: Arc<Mutex<Shared>>,
|
||||
stream: TcpStream,
|
||||
addr: SocketAddr,
|
||||
) -> Result<(), Box<dyn Error>> {
|
||||
let mut lines = Framed::new(stream, LinesCodec::new());
|
||||
|
||||
// Send a prompt to the client to enter their username.
|
||||
lines.send("Please enter your username:").await?;
|
||||
|
||||
// Read the first line from the `LineCodec` stream to get the username.
|
||||
let username = match lines.next().await {
|
||||
Some(Ok(line)) => line,
|
||||
// We didn't get a line so we return early here.
|
||||
_ => {
|
||||
tracing::error!(
|
||||
"Failed to get username from {}. Client disconnected.",
|
||||
addr
|
||||
);
|
||||
return Ok(());
|
||||
}
|
||||
};
|
||||
|
||||
// Register our peer with state which internally sets up some channels.
|
||||
let mut peer = Peer::new(state.clone(), lines).await?;
|
||||
|
||||
// A client has connected, let's let everyone know.
|
||||
{
|
||||
let mut state = state.lock().await;
|
||||
let msg = format!("{} has joined the chat", username);
|
||||
tracing::info!("{}", msg);
|
||||
state.broadcast(addr, &msg).await;
|
||||
}
|
||||
|
||||
// Process incoming messages until our stream is exhausted by a disconnect.
|
||||
loop {
|
||||
tokio::select! {
|
||||
// A message was received from a peer. Send it to the current user.
|
||||
Some(msg) = peer.rx.recv() => {
|
||||
peer.lines.send(&msg).await?;
|
||||
}
|
||||
result = peer.lines.next() => match result {
|
||||
// A message was received from the current user, we should
|
||||
// broadcast this message to the other users.
|
||||
Some(Ok(msg)) => {
|
||||
let mut state = state.lock().await;
|
||||
let msg = format!("{}: {}", username, msg);
|
||||
|
||||
state.broadcast(addr, &msg).await;
|
||||
}
|
||||
// An error occurred.
|
||||
Some(Err(e)) => {
|
||||
tracing::error!(
|
||||
"an error occurred while processing messages for {}; error = {:?}",
|
||||
username,
|
||||
e
|
||||
);
|
||||
}
|
||||
// The stream has been exhausted.
|
||||
None => break,
|
||||
},
|
||||
}
|
||||
}
|
||||
|
||||
// If this section is reached it means that the client was disconnected!
|
||||
// Let's let everyone still connected know about it.
|
||||
{
|
||||
let mut state = state.lock().await;
|
||||
state.peers.remove(&addr);
|
||||
|
||||
let msg = format!("{} has left the chat", username);
|
||||
tracing::info!("{}", msg);
|
||||
state.broadcast(addr, &msg).await;
|
||||
}
|
||||
Server::builder()
|
||||
// Wrap all services in the middleware stack
|
||||
.layer(layer)
|
||||
.add_service(svc)
|
||||
.serve(addr)
|
||||
.await?;
|
||||
|
||||
Ok(())
|
||||
}
|
||||
|
||||
// An interceptor function.
|
||||
fn intercept(req: Request<()>) -> Result<Request<()>, Status> {
|
||||
Ok(req)
|
||||
}
|
||||
|
||||
#[derive(Debug, Clone, Default)]
|
||||
struct MyMiddlewareLayer;
|
||||
|
||||
impl<S> Layer<S> for MyMiddlewareLayer {
|
||||
type Service = MyMiddleware<S>;
|
||||
|
||||
fn layer(&self, service: S) -> Self::Service {
|
||||
MyMiddleware { inner: service }
|
||||
}
|
||||
}
|
||||
|
||||
#[derive(Debug, Clone)]
|
||||
struct MyMiddleware<S> {
|
||||
inner: S,
|
||||
}
|
||||
|
||||
impl<S> Service<hyper::Request<Body>> for MyMiddleware<S>
|
||||
where
|
||||
S: Service<hyper::Request<Body>, Response = hyper::Response<BoxBody>>
|
||||
+ Clone
|
||||
+ Send
|
||||
+ 'static,
|
||||
S::Future: Send + 'static,
|
||||
{
|
||||
type Response = S::Response;
|
||||
type Error = S::Error;
|
||||
type Future =
|
||||
futures::future::BoxFuture<'static, Result<Self::Response, Self::Error>>;
|
||||
|
||||
fn poll_ready(
|
||||
&mut self,
|
||||
cx: &mut Context<'_>,
|
||||
) -> Poll<Result<(), Self::Error>> {
|
||||
self.inner.poll_ready(cx)
|
||||
}
|
||||
|
||||
fn call(&mut self, req: hyper::Request<Body>) -> Self::Future {
|
||||
// This is necessary because tonic internally uses `tower::buffer::Buffer`.
|
||||
// See https://github.com/tower-rs/tower/issues/547#issuecomment-767629149
|
||||
// for details on why this is necessary
|
||||
let clone = self.inner.clone();
|
||||
let mut inner = std::mem::replace(&mut self.inner, clone);
|
||||
|
||||
Box::pin(async move {
|
||||
// Do extra async work here...
|
||||
let response = inner.call(req).await?;
|
||||
|
||||
Ok(response)
|
||||
})
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -1,16 +0,0 @@
|
|||
use tokio::sync::broadcast::{Receiver, Sender};
|
||||
|
||||
pub struct UserId(String);
|
||||
|
||||
pub struct Message {
|
||||
sender: UserId,
|
||||
body: String,
|
||||
}
|
||||
|
||||
pub type MessageTx = Sender<Message>;
|
||||
pub type MessageRx = Receiver<Message>;
|
||||
|
||||
pub struct Room {
|
||||
sender: MessageTx,
|
||||
receiver: MessageRx,
|
||||
}
|
||||
Loading…
Reference in a new issue