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add some log messages to help troubleshooting #44

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add some log messages to help troubleshooting #44

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4 changes: 4 additions & 0 deletions bin/lens-server/src/main.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -147,8 +147,12 @@ fn main() -> Result<()> {

let mut server = Server::listen();

info!("Loading library...");

let library = unsafe { LensLibrary::new(dll_path, (2448, 2448))? };

info!("Listening for requests...");

loop {
let req = server.recv().context("failed to read request")?;
match req {
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5 changes: 5 additions & 0 deletions crates/lens-protocol/src/lib.rs
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Expand Up @@ -18,6 +18,8 @@ pub enum Error {
MissingPipe,
#[error("failed to ping server")]
PingFailed,
#[error("Invalid size of message (is the pipeline really speaking lens?): {0}")]
InvalidMessageSize(u32),
}
type Result<T, E = Error> = result::Result<T, E>;

Expand Down Expand Up @@ -204,6 +206,9 @@ pub fn read_message(read: &mut impl Read) -> Result<Vec<u8>> {
let mut len_buf = [0; 4];
read.read_exact(&mut len_buf)?;
let len = u32::from_be_bytes(len_buf);
if len < 0 || len > 0xFFFFFF {
return Err(Error::InvalidMessageSize(len));
}
// This protocol isn't talkative, its ok to allocate here.
let mut data = vec![0; len as usize];
read.read_exact(&mut data)?;
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