Enum dhcp4r::options::MessageType [−][src]
pub enum MessageType {
Discover,
Offer,
Request,
Decline,
Ack,
Nak,
Release,
Inform,
}
Expand description
DHCP Message Type.
Standards
The semantics of the various DHCP message types are described in RFC 2131 (see Table 2). Their numeric values are described in Section 9.6 of RFC 2132, which begins:
This option is used to convey the type of the DHCP message. The code for this option is 53, and its length is 1.
Variants
Client broadcast to locate available servers.
Server to client in response to DHCPDISCOVER with offer of configuration parameters.
Client message to servers either (a) requesting offered parameters from one server and implicitly declining offers from all others, (b) confirming correctness of previously allocated address after, e.g., system reboot, or (c) extending the lease on a particular network address.
Client to server indicating network address is already in use.
Server to client with configuration parameters, including committed network address.
Server to client indicating client’s notion of network address is incorrect (e.g., client has moved to new subnet) or client’s lease as expired.
Client to server relinquishing network address and cancelling remaining lease.
Client to server, asking only for local configuration parameters; client already has externally configured network address.
Implementations
Trait Implementations
Converts an u64
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned. Read more
Converts an i64
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned. Read more
Converts an isize
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned. Read more
Converts an i8
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned. Read more
Converts an i16
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned. Read more
Converts an i32
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned. Read more
Converts an i128
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned. Read more
Converts a usize
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned. Read more
Converts an u8
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned. Read more
Converts an u16
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned. Read more
Converts an u32
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned. Read more
Converts an u128
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned. Read more
Converts a f32
to return an optional value of this type. If the
value cannot be represented by this type, then None
is returned. Read more
Converts the value of self
to a u64
. If the value cannot be
represented by a u64
, then None
is returned. Read more
Converts the value of self
to an i64
. If the value cannot be
represented by an i64
, then None
is returned. Read more
Converts the value of self
to an isize
. If the value cannot be
represented by an isize
, then None
is returned. Read more
Converts the value of self
to an i8
. If the value cannot be
represented by an i8
, then None
is returned. Read more
Converts the value of self
to an i16
. If the value cannot be
represented by an i16
, then None
is returned. Read more
Converts the value of self
to an i32
. If the value cannot be
represented by an i32
, then None
is returned. Read more
Converts the value of self
to an i128
. If the value cannot be
represented by an i128
(i64
under the default implementation), then
None
is returned. Read more
Converts the value of self
to a usize
. If the value cannot be
represented by a usize
, then None
is returned. Read more
Converts the value of self
to a u8
. If the value cannot be
represented by a u8
, then None
is returned. Read more
Converts the value of self
to a u16
. If the value cannot be
represented by a u16
, then None
is returned. Read more
Converts the value of self
to a u32
. If the value cannot be
represented by a u32
, then None
is returned. Read more
Converts the value of self
to a u128
. If the value cannot be
represented by a u128
(u64
under the default implementation), then
None
is returned. Read more
Converts the value of self
to an f32
. Overflows may map to positive
or negative inifinity, otherwise None
is returned if the value cannot
be represented by an f32
. Read more
Auto Trait Implementations
impl RefUnwindSafe for MessageType
impl Send for MessageType
impl Sync for MessageType
impl Unpin for MessageType
impl UnwindSafe for MessageType
Blanket Implementations
Mutably borrows from an owned value. Read more