Enum ServerMessage 

pub enum ServerMessage {
    RegisterAck {
        keepalive_seconds: u32,
        secondary_keepalive_seconds: u32,
        protocol: ProtocolVersion,
        features: PhoneFeatures,
        date_template: DateTemplate,
    },
    RegisterReject {
        reason: String,
    },
    KeepAliveAck,
    UnregisterAck,
    CapabilitiesRequest,
    EnunciatorCommand,
    ConfigStatus(ConfigurationStatus),
    LineStatus {
        instance: u32,
        number: String,
        display_name: String,
    },
    ButtonTemplate {
        offset: u32,
        total: u32,
        buttons: Vec<ButtonTemplateEntry>,
    },
    Version {
        firmware: String,
    },
    ServerResponse {
        servers: Vec<SignalingServerEndpoint>,
    },
    TimeDate {
        year: u32,
        month: u32,
        weekday: u32,
        day: u32,
        hour: u32,
        minute: u32,
        second: u32,
        milliseconds: u32,
        unix_seconds: u32,
    },
    SoftKeyTemplate {
        actions: Vec<SoftKey>,
    },
    SoftKeySet {
        profile: SoftKeyProfile,
    },
    SelectSoftKeys {
        line_instance: u32,
        call_reference: u32,
        set: KeyMode,
        valid_mask: u32,
    },
    CallState {
        state: CallState,
        line_instance: u32,
        call_reference: u32,
    },
    CallInfo {
        info: CallInfo,
        line_instance: u32,
        call_reference: u32,
    },
    DisplayPrompt {
        timeout_seconds: u32,
        text: String,
        line_instance: u32,
        call_reference: u32,
    },
    ClearPrompt {
        line_instance: u32,
        call_reference: u32,
    },
    DisplayNotify {
        timeout_seconds: u32,
        text: String,
    },
    ClearNotify,
    DisplayPriorityNotify {
        timeout_seconds: u32,
        priority: NotificationPriority,
        text: String,
    },
    ClearPriorityNotify {
        priority: NotificationPriority,
    },
    NotifyDtmfTone(DtmfToneControl),
    SendDtmfTone(DtmfToneControl),
    StartAnnouncement {
        announcements: Vec<AnnouncementEntry>,
        end_of_ack: u32,
        conference_id: u32,
        matrix_conference_party_ids: Vec<u32>,
        hearing_conference_party_mask: u32,
        play_mode: u32,
    },
    StopAnnouncement {
        conference_id: u32,
    },
    AnnouncementFinish {
        conference_id: u32,
        play_status: u32,
    },
    ClearConference {
        conference_id: ConferenceId,
        service_number: u32,
    },
    CreateConferenceRequest(CreateConferenceRequest),
    DeleteConferenceRequest {
        conference_id: ConferenceId,
    },
    ModifyConferenceRequest(ModifyConferenceRequest),
    AuditConferenceRequest,
    AddParticipantRequest(AddParticipantRequest),
    DropParticipantRequest {
        conference_id: ConferenceId,
        call_reference: CallReference,
    },
    AuditParticipantRequest {
        conference_id: ConferenceId,
    },
    ChangeParticipantRequest(ChangeParticipantRequest),
    StopMultimediaTransmission(MultimediaStreamControl),
    FlowControlCommand(VideoFlowControl),
    CloseMultimediaReceiveChannel(MultimediaStreamControl),
    VideoDisplayCommand {
        conference_id: ConferenceId,
        call_reference: CallReference,
        layout_id: u32,
    },
    FlowControlNotify(VideoFlowControl),
    ActivateCallPlane {
        line_instance: u32,
    },
    DeactivateCallPlane,
    BackspaceResponse {
        line_instance: u32,
        call_reference: u32,
    },
    RegisterTokenAck,
    RegisterTokenReject {
        backoff_seconds: u32,
    },
    SpcpRegisterTokenAck {
        features: u32,
    },
    SpcpRegisterTokenReject {
        backoff_seconds: u32,
    },
    SetRinger {
        mode: RingerMode,
        duration: RingDuration,
        line_instance: u32,
        call_reference: u32,
    },
    SetLamp {
        stimulus: ButtonType,
        instance: u32,
        mode: LampMode,
    },
    SetHookFlashDetect,
    StartTone {
        tone: Tone,
        direction: ToneDirection,
        line_instance: u32,
        call_reference: u32,
    },
    StopTone {
        line_instance: u32,
        call_reference: u32,
    },
    StartMulticastMediaReception(MulticastMediaReception),
    StartMulticastMediaTransmission(MulticastMediaTransmission),
    StopMulticastMediaReception {
        conference_id: ConferenceId,
        passthrough_party_id: PassthroughPartyId,
        call_reference: CallReference,
    },
    StopMulticastMediaTransmission {
        conference_id: ConferenceId,
        passthrough_party_id: PassthroughPartyId,
        call_reference: CallReference,
    },
    OpenReceiveChannel {
        call_reference: u32,
        passthrough_party_id: u32,
        packet_ms: u32,
        codec: Codec,
        echo_cancellation: EchoCancellation,
        telephone_event_payload: u8,
        source_address: IpAddr,
        source_port: u16,
        encryption: Option<MediaEncryption>,
        wire: Option<OpenReceiveChannelWire>,
    },
    CloseReceiveChannel(AudioStreamControl),
    ConnectionStatisticsRequest {
        directory_number: String,
        call_reference: u32,
        processing: StatisticsProcessing,
    },
    StartMediaTransmission {
        call_reference: u32,
        passthrough_party_id: u32,
        endpoint: MediaEndpoint,
        silence_suppression: SilenceSuppression,
        traffic_class: MediaTrafficClass,
        encryption: Option<MediaEncryption>,
        wire: Option<StartMediaTransmissionWire>,
    },
    StopMediaTransmission(AudioStreamControl),
    StartMediaReception,
    StopMediaReception {
        conference_id: ConferenceId,
        passthrough_party_id: PassthroughPartyId,
    },
    SubscribeDtmfPayloadRequest(DtmfPayloadRequest),
    SubscribeDtmfPayloadError(DtmfPayloadIdentity),
    UnsubscribeDtmfPayloadRequest(DtmfPayloadRequest),
    UnsubscribeDtmfPayloadError(DtmfPayloadIdentity),
    SetSpeakerMode(SpeakerMode),
    SetMicrophoneMode(MicrophoneMode),
    Reset(ResetType),
    DisplayText {
        text: String,
    },
    ClearDisplay,
    ForwardStatus {
        line_instance: u32,
        forward_all: Option<String>,
        forward_busy: Option<String>,
        forward_no_answer: Option<String>,
    },
    SpeedDialStatus {
        instance: u32,
        number: String,
        display_name: String,
    },
    DialedNumber {
        number: String,
        line_instance: u32,
        call_reference: u32,
    },
    StartMediaFailureDetection(MediaFailureDetection),
    UserToDeviceData(UserDataMessage),
    UserToDeviceDataV1(UserDataV1Message),
    FeatureStatus {
        instance: u32,
        button_type: ButtonType,
        label: String,
        state: u32,
    },
    ServiceUrlStatus {
        index: u32,
        url: String,
        label: String,
        extension_text: String,
    },
    CallSelectStatus {
        status: u32,
        call_reference: u32,
        line_instance: u32,
    },
    PortRequest(PortRequest),
    PortClose(PortClose),
    OpenMultimediaChannel(OpenMultimediaChannel),
    StartMultimediaTransmission(StartMultimediaTransmission),
    MiscellaneousCommand(MiscellaneousCommand),
    SubscriptionStatus {
        transaction_id: u32,
        feature_id: u32,
        timer_seconds: u32,
        cause: SubscriptionCause,
    },
    Notification {
        transaction_id: u32,
        feature_id: u32,
        status: BusyLampFieldState,
        text: String,
    },
    CallHistoryDisposition {
        disposition: CallHistoryDisposition,
        line_instance: u32,
        call_reference: u32,
    },
    CallCountResponse,
    RecordingStatus {
        call_reference: u32,
        active: bool,
    },
    KnownOpaque(KnownOpaqueMessage),
    Unknown(RawMessage),
}

Typed messages emitted toward a station connection.

Use Self::encode_for_session after registration so both protocol version and negotiated feature bits participate in layout selection. The simpler Self::encode applies version-only selection. User-visible strings can be encoded through the explicit legacy-code-page entry points when required.

Variants

RegisterAck

Accepts station registration and supplies session parameters. Carries keepalive intervals, protocol features, and the date template.

Fields

keepalive_seconds: u32

secondary_keepalive_seconds: u32

protocol: ProtocolVersion

features: PhoneFeatures

date_template: DateTemplate

RegisterReject

Rejects a station registration attempt. Returns a human-readable reason for refusing the registration.

Fields

reason: String

KeepAliveAck

Acknowledges a station keepalive message. Confirms that the signaling session remains active.

UnregisterAck

Acknowledges a station unregister request. Confirms that the server has released the registration.

CapabilitiesRequest

Requests the station’s supported media capabilities. Prompts a capability response used for media negotiation.

EnunciatorCommand

Invokes the station’s legacy announcement enunciator. Applies to the station rather than a particular line or call.

ConfigStatus(ConfigurationStatus)

Supplies the station’s provisioned device configuration. Carries user, service, and device settings needed after registration.

LineStatus

Supplies the configured identity of one station line. Maps a line instance to its directory number and display name.

Fields

instance: u32

number: String

display_name: String

ButtonTemplate

Supplies one chunk of the station’s logical button layout. Uses offset and total counts to span layouts across multiple frames.

Fields

offset: u32

total: u32

buttons: Vec<ButtonTemplateEntry>

Version

Supplies the firmware or load version assigned to the station. Answers the station’s version request during provisioning.

Fields

firmware: String

ServerResponse

Supplies the station’s signaling-server list. Provides primary and failover endpoints for server discovery.

Fields

servers: Vec<SignalingServerEndpoint>

TimeDate

Supplies the server’s current date and time. Synchronizes the station clock with calendar and Unix time fields.

Fields

year: u32

month: u32

weekday: u32

day: u32

hour: u32

minute: u32

second: u32

milliseconds: u32

unix_seconds: u32

SoftKeyTemplate

Supplies the soft-key actions supported by the server. Defines the action identifiers referenced by soft-key sets.

Fields

actions: Vec<SoftKey>

SoftKeySet

Supplies the station’s soft-key set profile. Maps call modes to ordered soft-key action lists.

Fields

profile: SoftKeyProfile

SelectSoftKeys

Selects the soft-key set shown for a call. Uses a validity mask to enable positions in the selected set.

Fields

line_instance: u32

call_reference: u32

set: KeyMode

valid_mask: u32

Bit mask over positions in the selected soft-key set.

CallState

Updates the station’s state for a call appearance. Associates the new call state with a line and call reference.

Fields

state: CallState

line_instance: u32

call_reference: u32

CallInfo

Supplies calling and called party information for a call. Updates the station’s call-information display and metadata.

Fields

info: CallInfo

line_instance: u32

call_reference: u32

DisplayPrompt

Displays a call-specific prompt on the station. Sets its text, timeout, line, and call context.

Fields

timeout_seconds: u32

text: String

line_instance: u32

call_reference: u32

ClearPrompt

Clears a call-specific prompt from the station. Targets the prompt associated with a line and call reference.

Fields

line_instance: u32

call_reference: u32

DisplayNotify

Displays a transient notification on the station. Supplies notification text and its timeout.

Fields

timeout_seconds: u32

text: String

ClearNotify

Clears the station’s transient notification. Removes the notification created by a display-notify message.

DisplayPriorityNotify

Displays a prioritized transient notification. Supplies its priority, text, and timeout.

Fields

timeout_seconds: u32

priority: NotificationPriority

text: String

ClearPriorityNotify

Clears notifications at a specified priority. Leaves notifications at other priorities unaffected.

Fields

priority: NotificationPriority

NotifyDtmfTone(DtmfToneControl)

Notifies the station of a DTMF tone state. Carries digit and call context without requesting local tone generation.

SendDtmfTone(DtmfToneControl)

Instructs the station to send a DTMF tone. Carries the digit and call context for media signaling.

StartAnnouncement

Starts an announcement for a conference. Carries the announcement sequence, participants, mask, and play mode.

Fields

announcements: Vec<AnnouncementEntry>

end_of_ack: u32

conference_id: u32

matrix_conference_party_ids: Vec<u32>

hearing_conference_party_mask: u32

play_mode: u32

StopAnnouncement

Stops the active announcement for a conference. Targets the announcement by conference identifier.

Fields

conference_id: u32

AnnouncementFinish

Reports or confirms announcement completion to the station. Carries the conference identifier and final play status.

Fields

conference_id: u32

play_status: u32

ClearConference

Clears conference state maintained by the station. Identifies the conference and associated service number.

Fields

conference_id: ConferenceId

service_number: u32

CreateConferenceRequest(CreateConferenceRequest)

Requests creation of a station-managed conference. Carries the conference attributes and correlation identifiers.

DeleteConferenceRequest

Requests deletion of a station-managed conference. Targets the conference by identifier.

Fields

conference_id: ConferenceId

ModifyConferenceRequest(ModifyConferenceRequest)

Requests changes to a station-managed conference. Carries the updated conference attributes and identifiers.

AuditConferenceRequest

Requests the station’s current conference state. Prompts an audit response for conference reconciliation.

AddParticipantRequest(AddParticipantRequest)

Requests adding a participant to a conference. Carries the conference, call, and participant details.

DropParticipantRequest

Requests removal of a participant from a conference. Targets the participant by conference and call reference.

Fields

conference_id: ConferenceId

call_reference: CallReference

AuditParticipantRequest

Requests the station’s state for conference participants. Targets the participant set associated with a conference.

Fields

conference_id: ConferenceId

ChangeParticipantRequest(ChangeParticipantRequest)

Requests changes to a conference participant. Carries updated participant attributes and identifiers.

StopMultimediaTransmission(MultimediaStreamControl)

Stops a station multimedia transmit stream. Identifies the conference, party, and call owning the stream.

FlowControlCommand(VideoFlowControl)

Commands a station video stream to change its flow. Carries the requested bit rate and stream identifiers.

CloseMultimediaReceiveChannel(MultimediaStreamControl)

Closes a station multimedia receive channel. Identifies the conference, party, and call owning the channel.

VideoDisplayCommand

Selects the station’s video display layout for a call. Carries conference, call, and layout identifiers.

Fields

conference_id: ConferenceId

call_reference: CallReference

layout_id: u32

FlowControlNotify(VideoFlowControl)

Notifies the station of video flow-control state. Reports stream identifiers and the applicable bit rate.

ActivateCallPlane

Activates the station call-control plane for a line. Makes the selected line instance the active call plane.

Fields

line_instance: u32

DeactivateCallPlane

Deactivates the station call-control plane. Removes the currently active call-plane selection.

BackspaceResponse

Confirms processing of a dial-string backspace. Associates the response with its line and call context.

Fields

line_instance: u32

call_reference: u32

RegisterTokenAck

Accepts a station registration-token request. Allows the station to proceed with full registration.

RegisterTokenReject

Rejects a station registration-token request. Supplies the delay before the station should retry.

Fields

backoff_seconds: u32

SpcpRegisterTokenAck

Accepts an SPCP registration-token request with a feature word. Allows the station to continue its SPCP registration sequence.

Fields

features: u32

SpcpRegisterTokenReject

Rejects an SPCP registration-token request temporarily. Supplies the delay before the station should request another token.

Fields

backoff_seconds: u32

SetRinger

Sets the station ringer behavior for a call. Carries mode, duration, line, and call context.

Fields

mode: RingerMode

duration: RingDuration

line_instance: u32

call_reference: u32

SetLamp

Sets the lamp state for a station button. Targets a button type and instance with the requested lamp mode.

Fields

stimulus: ButtonType

instance: u32

mode: LampMode

SetHookFlashDetect

Enables hook-flash detection on stations that expose that capability. Causes subsequent hook-flash actions to be reported to call control.

StartTone

Starts local tone generation on the station. Selects the tone, direction, line, and call context.

Fields

tone: Tone

direction: ToneDirection

line_instance: u32

call_reference: u32

StopTone

Stops local tone generation for a call. Targets the tone associated with a line and call reference.

Fields

line_instance: u32

call_reference: u32

StartMulticastMediaReception(MulticastMediaReception)

Starts station reception of a multicast media stream. Supplies multicast endpoint, codec, and stream identifiers.

StartMulticastMediaTransmission(MulticastMediaTransmission)

Starts station transmission to a multicast media stream. Supplies multicast endpoint, codec, and stream identifiers.

StopMulticastMediaReception

Stops station reception of a multicast media stream. Targets the stream by conference, party, and call identifiers.

Fields

conference_id: ConferenceId

passthrough_party_id: PassthroughPartyId

call_reference: CallReference

StopMulticastMediaTransmission

Stops station transmission to a multicast media stream. Targets the stream by conference, party, and call identifiers.

Fields

conference_id: ConferenceId

passthrough_party_id: PassthroughPartyId

call_reference: CallReference

OpenReceiveChannel

Opens a station audio receive channel. Supplies codec, packetization, source, encryption, and stream details.

Fields

call_reference: u32

passthrough_party_id: u32

packet_ms: u32

codec: Codec

echo_cancellation: EchoCancellation

telephone_event_payload: u8

Dynamic RTP payload type used for telephone-event DTMF, or zero for signaling DTMF.

source_address: IpAddr

source_port: u16

encryption: Option<MediaEncryption>

wire: Option<OpenReceiveChannelWire>

Exact auxiliary wire fields, or encoder defaults when absent on a runtime-created message.

CloseReceiveChannel(AudioStreamControl)

Closes a station audio receive channel. Identifies the conference, party, and call owning the stream.

ConnectionStatisticsRequest

Requests media connection statistics from the station. Selects the call, directory number, and statistics processing mode.

Fields

directory_number: String

call_reference: u32

processing: StatisticsProcessing

StartMediaTransmission

Starts station audio transmission to a media endpoint. Supplies endpoint, traffic class, encryption, and stream details.

Fields

call_reference: u32

passthrough_party_id: u32

endpoint: MediaEndpoint

silence_suppression: SilenceSuppression

traffic_class: MediaTrafficClass

Full traffic-class octet; configuration DSCP is shifted left by two.

encryption: Option<MediaEncryption>

wire: Option<StartMediaTransmissionWire>

Exact auxiliary wire fields, or encoder defaults when absent on a runtime-created message.

StopMediaTransmission(AudioStreamControl)

Stops a station audio transmit stream. Identifies the conference, party, and call owning the stream.

StartMediaReception

Starts the station’s legacy receive-side media function. Carries no stream identity, endpoint, or codec parameters.

StopMediaReception

Stops a legacy media-reception path for one conference party. Identifies the active reception by conference and passthrough party.

Fields

conference_id: ConferenceId

passthrough_party_id: PassthroughPartyId

SubscribeDtmfPayloadRequest(DtmfPayloadRequest)

Requests subscription to an RTP DTMF payload. Carries the payload and transaction identity to subscribe.

SubscribeDtmfPayloadError(DtmfPayloadIdentity)

Reports failure to establish a DTMF payload subscription. Identifies the payload and transaction that failed.

UnsubscribeDtmfPayloadRequest(DtmfPayloadRequest)

Requests removal of an RTP DTMF payload subscription. Carries the payload and transaction identity to remove.

UnsubscribeDtmfPayloadError(DtmfPayloadIdentity)

Reports failure to remove a DTMF payload subscription. Identifies the payload and transaction that failed.

SetSpeakerMode(SpeakerMode)

Sets the station speakerphone mode. Controls whether the station speaker audio path is active.

SetMicrophoneMode(MicrophoneMode)

Sets the station microphone mode. Controls whether the station microphone audio path is active.

Reset(ResetType)

Requests a station reset or restart. Selects the reset behavior defined by the reset type.

DisplayText

Displays text in the station’s general display area. Replaces the current non-call-specific display text.

Fields

text: String

ClearDisplay

Clears the station’s general display area. Removes text previously sent with a display-text message.

ForwardStatus

Supplies call-forwarding state for one line. Carries destinations for all, busy, and no-answer forwarding.

Fields

line_instance: u32

forward_all: Option<String>

forward_busy: Option<String>

forward_no_answer: Option<String>

SpeedDialStatus

Supplies the contents of one station speed-dial entry. Maps an entry instance to its number and display name.

Fields

instance: u32

number: String

display_name: String

DialedNumber

Displays or records the dialed number for a call. Associates the number with its line and call reference.

Fields

number: String

line_instance: u32

call_reference: u32

StartMediaFailureDetection(MediaFailureDetection)

Starts station monitoring for media-path failure. Supplies thresholds and stream identifiers used for detection.

UserToDeviceData(UserDataMessage)

Carries legacy application data from the server to the station. Uses the fixed-format user-to-device data layout.

UserToDeviceDataV1(UserDataV1Message)

Carries version-one application data from the server. Supports the extended variable-length user-data layout.

FeatureStatus

Supplies the state of a provisioned feature button. Carries its type, label, instance, and feature-specific state.

Fields

instance: u32

button_type: ButtonType

label: String

state: u32

Feature-specific state word interpreted according to button_type.

ServiceUrlStatus

Supplies the configured service URL at an index. Carries its URL, label, and optional extension text.

Fields

index: u32

url: String

label: String

extension_text: String

Additional dynamic-layout text; empty in layouts that do not carry it.

CallSelectStatus

Updates whether a call is selected on the station. Associates the selection state with its line and call.

Fields

status: u32

Selection-state word retained as an extensible numeric value.

call_reference: u32

line_instance: u32

PortRequest(PortRequest)

Requests endpoint information for a station port. Carries the port identity and addressing parameters to resolve.

PortClose(PortClose)

Requests closure of a station port endpoint. Identifies the endpoint and port resources to release.

OpenMultimediaChannel(OpenMultimediaChannel)

Opens a station multimedia receive channel. Supplies codec, endpoint, and stream negotiation details.

StartMultimediaTransmission(StartMultimediaTransmission)

Starts station transmission of multimedia. Supplies destination, codec, bandwidth, and stream identifiers.

MiscellaneousCommand(MiscellaneousCommand)

Sends a stream-specific multimedia control command. Carries command data for video, picture, or recovery behavior.

SubscriptionStatus

Supplies the result or state of a feature subscription. Carries transaction, feature, timer, and cause values.

Fields

transaction_id: u32

feature_id: u32

timer_seconds: u32

cause: SubscriptionCause

Notification

Sends a feature-subscription notification to the station. Carries transaction state, feature state, and display text.

Fields

transaction_id: u32

feature_id: u32

status: BusyLampFieldState

text: String

CallHistoryDisposition

Sets how a call is represented in station call history. Associates the disposition with its line and call reference.

Fields

disposition: CallHistoryDisposition

line_instance: u32

call_reference: u32

CallCountResponse

Returns the server’s current call-count response. Answers the corresponding station call-count request.

RecordingStatus

Updates the station’s recording indicator for a call. Carries the call reference and whether recording is active.

Fields

call_reference: u32

active: bool

KnownOpaque(KnownOpaqueMessage)

Preserves a recognized server-to-station message without typed decoding. Retains its catalog identifier and payload bytes for lossless handling.

Unknown(RawMessage)

Preserves an unrecognized server-to-station message. Retains the unknown identifier and raw payload for diagnostics or forwarding.

Implementations

impl ServerMessage

pub fn decode( frame: Frame, protocol: ProtocolVersion, ) -> Result<Self, CodecError>

Decode a server-to-phone message using the negotiated version for layouts whose frame header is zero or otherwise ambiguous.

pub fn encode(&self, protocol: ProtocolVersion) -> Result<Vec<u8>, CodecError>

Encodes a control-to-station message using version-only layout selection.

When negotiated feature flags also select layouts, use Self::encode_for_session.

pub fn encode_for_session( &self, session: StationSessionContext, ) -> Result<Vec<u8>, CodecError>

Encodes a control-to-station message with complete session layout inputs.

pub fn encode_for_legacy_station( &self, protocol: ProtocolVersion, code_page: LegacyCodePage, ) -> Result<Vec<u8>, CodecError>

Encode station-facing labels in a legacy single-byte code page.

Version-only layout selection is used. See Self::encode_for_legacy_session when feature flags also matter.

pub fn encode_for_legacy_session( &self, session: StationSessionContext, code_page: LegacyCodePage, ) -> Result<Vec<u8>, CodecError>

Encodes a station message with session-aware layout selection and a legacy single-byte code page for user-visible labels.

Trait Implementations

impl Clone for ServerMessage

fn clone(&self) -> ServerMessage

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ServerMessage

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

Formats the value using the given formatter.

impl Eq for ServerMessage

impl PartialEq for ServerMessage

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ServerMessage