Enum ProtocolVersion 

pub enum ProtocolVersion {
    V0,
    V2,
}

Which version of the smart protocol a connection speaks.

The server does not choose. Over SSH the client asks by sending GIT_PROTOCOL=version=2 as an environment variable, and a client that cannot, or a transport that drops it, gets v0. gunnar-ssh reads the variable off the channel and passes the answer in.

Variants

V0

The original protocol: a reference advertisement, then want/have.

V2

Command-oriented, capability-negotiated protocol v2.

Implementations

impl ProtocolVersion

pub fn from_git_protocol(value: Option<&str>) -> Self

Parse the GIT_PROTOCOL environment variable.

The value is a colon-separated list of key=value, of which gunnar only cares about version. Anything that is not version=2 is v0: absent, malformed, version=1.

Protocol v1 is deliberately treated as v0 rather than rejected: v1 is v0 preceded by a single version 1 pkt-line, and git’s own version discovery treats a missing one as v0 and carries on. Answering a v1 request with a v0 advertisement therefore works, where refusing it would break a client for no benefit.

pub fn number(&self) -> u8

The number as it appears in version=<n>.

Trait Implementations

impl Clone for ProtocolVersion

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ProtocolVersion

impl Debug for ProtocolVersion

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

Formats the value using the given formatter.

impl Default for ProtocolVersion

fn default() -> Self

Returns the “default value” for a type.

impl Eq for ProtocolVersion

impl PartialEq for ProtocolVersion

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ProtocolVersion