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Add public constant for header size #66

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Oct 22, 2024
Merged

Add public constant for header size #66

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2 changes: 1 addition & 1 deletion src/forward_traffic.rs
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Expand Up @@ -21,7 +21,7 @@ use tokio::time::timeout;
/// read operation would ever return. We are going to use that extra space
/// to store our 2 byte udp-over-tcp header.
pub const MAX_DATAGRAM_SIZE: usize = u16::MAX as usize;
const HEADER_LEN: usize = mem::size_of::<u16>();
pub const HEADER_LEN: usize = mem::size_of::<u16>();

/// Forward traffic between the given UDP and TCP sockets in both directions.
/// This async function runs until one of the sockets are closed or there is an error.
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3 changes: 3 additions & 0 deletions src/lib.rs
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Expand Up @@ -93,6 +93,9 @@ mod tcp_options;

pub use tcp_options::{ApplyTcpOptionsError, ApplyTcpOptionsErrorKind, TcpOptions};

/// Size of the header (in bytes) that is prepended to each datagram in the TCP stream.
pub use forward_traffic::HEADER_LEN;

/// Helper trait for `Result<Infallible, E>` types. Allows getting the `E` value
/// in a way that is guaranteed to not panic.
pub trait NeverOkResult<E> {
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