An SSE encoder/decoder
use futures::stream::StreamExt;
use mousse::Parser;
#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
let url = match std::env::args().nth(1) {
Some(url) => url,
None => {
eprintln!("expected uri argument\ncargo run -- <uri>");
std::process::exit(1);
}
};
let mut stream = reqwest::get(&url)
.await?
.bytes_stream();
while let Some(chunk) = stream.next().await {
let chunk = chunk?;
let string = String::from_utf8_lossy(&chunk);
let mut parser = Parser::new(&string);
println!("{:?}", parser.next_event());
}
Ok(())
}If you connect this to an sse server, you might see something like this.
cargo run --example reqwest -- http://localhost:8080/sse
Some(ServerSentEvent { comment: None, event: None, id: None, data: Some("next tick in 5"), retry: None })
Some(ServerSentEvent { comment: Some(""), event: None, id: None, data: None, retry: None })
Some(ServerSentEvent { comment: None, event: None, id: None, data: Some("next tick in 4"), retry: None })
Some(ServerSentEvent { comment: Some(""), event: None, id: None, data: None, retry: None })
Some(ServerSentEvent { comment: None, event: None, id: None, data: Some("next tick in 2"), retry: None })
Some(ServerSentEvent { comment: None, event: None, id: None, data: Some("next tick in 1"), retry: None })use mousse::ServerSentEvent;
fn main() {
for i in 0..10 {
println!(
"{}",
ServerSentEvent::builder()
.data(&format!("{}: Hi I am a data field", i))
.id(&i.to_string())
.build()
)
}
}cargo run --example encode
id:0
data:0: Hi I am a data field
id:1
data:1: Hi I am a data field
id:2
data:2: Hi I am a data field
id:3
data:3: Hi I am a data field
id:4
data:4: Hi I am a data field
id:5
data:5: Hi I am a data field
id:6
data:6: Hi I am a data field
id:7
data:7: Hi I am a data field
id:8
data:8: Hi I am a data field
id:9
data:9: Hi I am a data field