Reduce bridge spamminess

Truncated messages are just a fact of life, we handle them correctly
Same for clients disconnecting with ECONNRESET, both were useful debug
aids, but now they are just useless spam that can look like an error to
an unknowing user.

Signed-off-by: Sasha Finkelstein <[email protected]>

Author: WhatAmISupposedToPutHere

crates/muvm/src/guest/bridge/common.rs

@@ -11,6 +11,7 @@ use std::rc::{Rc, Weak};
 use std::{env, fs, mem, slice, thread};
 
 use anyhow::Result;
+use log::debug;
 use nix::errno::Errno;
 use nix::libc::{c_int, c_void, off_t, O_RDWR};
 use nix::sys::epoll::{Epoll, EpollCreateFlags, EpollEvent, EpollFlags, EpollTimeout};
@@ -849,9 +850,15 @@ impl<'a, P: ProtocolHandler> Client<'a, P> {
         if fd == self.socket.as_raw_fd() as u64 {
             let event = self
                 .process_socket(events)
-                .map_err(|e| {
-                    eprintln!("Client {fd} disconnected with error: {e:?}");
-                    e
+                .map_err(|err| {
+                    if let Some(errno) = err.downcast_ref::<Errno>() {
+                        if errno == &Errno::ECONNRESET {
+                            debug!("Client {fd} disconnected with error: {err:?}");
+                            return err;
+                        }
+                    }
+                    eprintln!("Client {fd} disconnected with error: {err:?}");
+                    err
                 })
                 .unwrap_or(ClientEvent::Close);
             match event {

crates/muvm/src/guest/bridge/pipewire.rs

@@ -4,6 +4,7 @@ use std::os::fd::{AsFd, AsRawFd, OwnedFd};
 use std::{env, mem};
 
 use anyhow::Result;
+use log::debug;
 use nix::errno::Errno;
 use nix::sys::epoll::EpollFlags;
 use nix::sys::eventfd::{EfdFlags, EventFd};
@@ -249,7 +250,7 @@ impl ProtocolHandler for PipeWireProtocolHandler {
         resources: &mut VecDeque<CrossDomainResource>,
     ) -> Result<StreamRecvResult> {
         if data.len() < PipeWireHeader::SIZE {
-            eprintln!(
+            debug!(
                 "Pipewire message truncated (expected at least 16 bytes, got {})",
                 data.len(),
             );
@@ -288,7 +289,7 @@ impl ProtocolHandler for PipeWireProtocolHandler {
         data: &mut [u8],
     ) -> Result<StreamSendResult<Self::ResourceFinalizer>> {
         if data.len() < PipeWireHeader::SIZE {
-            eprintln!(
+            debug!(
                 "Pipewire message truncated (expected at least 16 bytes, got {})",
                 data.len(),
             );

crates/muvm/src/guest/bridge/x11.rs

@@ -12,6 +12,7 @@ use std::thread::JoinHandle;
 use std::{fs, mem, ptr, thread};
 
 use anyhow::Result;
+use log::debug;
 use nix::errno::Errno;
 use nix::fcntl::readlink;
 use nix::libc::{
@@ -177,7 +178,7 @@ impl ProtocolHandler for X11ProtocolHandler {
             });
         }
         if data.len() < 32 {
-            eprintln!(
+            debug!(
                 "X11 message truncated (expected at least 32 bytes, got {})",
                 data.len(),
             );
@@ -228,7 +229,7 @@ impl ProtocolHandler for X11ProtocolHandler {
             });
         }
         if buf.len() < 4 {
-            eprintln!(
+            debug!(
                 "X11 message truncated (expected at least 4 bytes, got {})",
                 buf.len(),
             );
@@ -237,7 +238,7 @@ impl ProtocolHandler for X11ProtocolHandler {
         let mut req_len = u16::from_ne_bytes(buf[2..4].try_into().unwrap()) as usize * 4;
         if req_len == 0 {
             if buf.len() < 8 {
-                eprintln!(
+                debug!(
                     "X11 message truncated (expected at least 8 bytes, got {})",
                     buf.len(),
                 );