Struct ProtocolSupport 

pub struct ProtocolSupport { /* private fields */ }

Exact, ordered protocol-version allow-list for one runtime component.

ProtocolSupport::default enables every version compiled into the crate. Use ProtocolSupport::try_new to narrow an individual server or client. The order is preserved and is used as the advertised preference order.

use tower_mcp::ProtocolSupport;

let support = ProtocolSupport::try_new(["2025-11-25"])?;
assert!(support.contains("2025-11-25"));
assert!(!support.contains("2025-03-26"));

Implementations

impl ProtocolSupport

pub fn compiled() -> Self

Enable every protocol implementation compiled into this build.

pub fn stable() -> Self

Enable only the stable-by-default compatibility set.

This excludes opt-in protocol implementations even when their Cargo features are compiled.

pub fn try_new<I, S>(versions: I) -> Result<Self, ProtocolSupportError>

where I: IntoIterator<Item = S>, S: Into<String>,

Construct an exact runtime allow-list.

Versions must be compiled into the crate, must not be duplicated, and the list must not be empty.

pub fn versions(&self) -> &[String]

Enabled versions in advertised preference order.

pub fn contains(&self, version: &str) -> bool

Whether this runtime component should accept a version.

pub fn preferred(&self) -> &str

Most-preferred enabled version.

Trait Implementations

impl Clone for ProtocolSupport

fn clone(&self) -> ProtocolSupport

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ProtocolSupport

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for ProtocolSupport

fn default() -> Self

Returns the “default value” for a type.

impl Eq for ProtocolSupport

impl PartialEq for ProtocolSupport

fn eq(&self, other: &ProtocolSupport) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for ProtocolSupport