1 files changed, 53 insertions, 0 deletions
diff --git a/third_party/rust/h2/src/proto/error.rs b/third_party/rust/h2/src/proto/error.rs
new file mode 100644
index 0000000000..c3ee20d03d
--- /dev/null
+++ b/third_party/rust/h2/src/proto/error.rs
@@ -0,0 +1,53 @@
+use crate::codec::{RecvError, SendError};
+use crate::frame::Reason;
+
+use std::io;
+
+/// Either an H2 reason  or an I/O error
+#[derive(Debug)]
+pub enum Error {
+    Proto(Reason),
+    Io(io::Error),
+}
+
+impl Error {
+    /// Clone the error for internal purposes.
+    ///
+    /// `io::Error` is not `Clone`, so we only copy the `ErrorKind`.
+    pub(super) fn shallow_clone(&self) -> Error {
+        match *self {
+            Error::Proto(reason) => Error::Proto(reason),
+            Error::Io(ref io) => Error::Io(io::Error::from(io.kind())),
+        }
+    }
+}
+
+impl From<Reason> for Error {
+    fn from(src: Reason) -> Self {
+        Error::Proto(src)
+    }
+}
+
+impl From<io::Error> for Error {
+    fn from(src: io::Error) -> Self {
+        Error::Io(src)
+    }
+}
+
+impl From<Error> for RecvError {
+    fn from(src: Error) -> RecvError {
+        match src {
+            Error::Proto(reason) => RecvError::Connection(reason),
+            Error::Io(e) => RecvError::Io(e),
+        }
+    }
+}
+
+impl From<Error> for SendError {
+    fn from(src: Error) -> SendError {
+        match src {
+            Error::Proto(reason) => SendError::Connection(reason),
+            Error::Io(e) => SendError::Io(e),
+        }
+    }
+}