[英]How can I make a rust websocket client?
我嘗試過使用不同的庫和不同的實現,但我無法在 rust 中獲得一個正常工作的 WebSocket 客戶端/偵聽器。
我嘗試編寫一個處理程序:
extern crate ws;
use ws::{connect, listen, Handler, Sender, Handshake, Result, Message, CloseCode};
struct Client {
out: Sender,
}
impl Handler for Client {
fn on_open(&mut self, _: Handshake) -> Result<()> {
self.out.send(r#"{"action": "authenticate","data": {"key_id": "<API_KEY>","secret_key": "<API_SECRET>"}}"#);
self.out.send(r#"{"action": "listen","data": {"streams": ["AM.SPY"]}}"#)
}
fn on_message(&mut self, msg: Message) -> Result<()> {
println!("message: {}", msg);
Ok(())
}
}
fn main() {
if let Err(error) = listen("wss://data.alpaca.markets/stream", |out| {
Client { out: out }
}) {
println!("Failed to create WebSocket due to: {:?}", error);
}
}
我也試過這個:
extern crate ws;
use ws::{connect, CloseCode};
fn main() {
if let Err(error) = connect("wss://data.alpaca.markets/stream", |out| {
if out.send(r#"{"action": "authenticate","data": {"key_id": "<API_KEY>","secret_key": "<API_SECRET>"}}"#).is_err() {
println!("Websocket couldn't queue an initial message.")
} else {
println!("Client sent message 'Hello WebSocket'. ")
};
if out.send(r#"{"action": "listen","data": {"streams": ["AM.SPY"]}}"#).is_err() {
println!("Websocket couldn't queue an initial message.")
} else {
println!("Client sent message 'Hello WebSocket'. ")
};
move |msg| {
println!("message: '{}'. ", msg);
Ok(())
}
}) {
println!("Failed to create WebSocket due to: {:?}", error);
}
}
為了確保我嘗試連接的連接不是問題,我在 JS 中編寫了相同的代碼。 這確實有效。
const ws = require("ws");
const stream = new ws("wss://data.alpaca.markets/stream");
stream.on("open", () => {
stream.send('{"action": "authenticate","data": {"key_id": "<API_KEY>","secret_key": "API_SECRET"}}');
stream.send('{"action": "listen","data": {"streams": ["AM.SPY"]}}');
});
stream.on("message", (bar) => {
process.stdout.write(`${bar}\n`);
});
在 rust 代碼的兩個實例中,代碼都會編譯並運行,但永遠不會調用 on_open 函數和 lambda 函數。
先感謝您。
對於面臨同樣問題的任何人,我建議使用tungstenite和異步 websockets tokio-tungstenite
這是最終為我工作的代碼:
use url::Url;
use tungstenite::{connect, Message};
let (mut socket, response) = connect(
Url::parse("wss://data.alpaca.markets/stream").unwrap()
).expect("Can't connect");
socket.write_message(Message::Text(r#"{
"action": "authenticate",
"data": {
"key_id": "API-KEY",
"secret_key": "SECRET-KEY"
}
}"#.into()));
socket.write_message(Message::Text(r#"{
"action": "listen",
"data": {
"streams": ["AM.SPY"]
}
}"#.into()));
loop {
let msg = socket.read_message().expect("Error reading message");
println!("Received: {}", msg);
}
這在 Cargo.toml 中:
[dependencies]
tungstenite = {version = "0.16.0", features = ["native-tls"]}
url = "2.2.2"
我面臨的問題是我使用的方法不是用於 TLS 流,而是用於 TCP 流。 使用 tungstenite,如果啟用 native-tls 功能,則 TCP 和 TLS 流都可以通過 connect 方法正確處理。
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.