package nbd

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package nbd

nbd
- Nbd
  - Channel
  - Client
  - Mirror
    
    Make
    
    Primary
    
    Secondary
  - Mux
    
    Make
    
    R
    
    RPC
  - Protocol
    
    Announcement
    
    ClientFlag
    
    Command
    
    DiskInfo
    
    Error
    
    ExportName
    
    GlobalFlag
    
    Negotiate
    
    NegotiateResponse
    
    Option
    
    OptionRequestHeader
    
    OptionResponse
    
    OptionResponseHeader
    
    PerExportFlag
    
    Reply
    
    Request
    
    Server
  - S
    
    CLIENT
    
    SERVER
  - Server

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type transport

The transport mechanism used to send and receive messages

type id

Each request_hdr and response_hdr carries an id that is used to match responses to requests.

type request_hdr

type request_body

type response_hdr

type response_body

val recv_hdr : transport -> (id option * response_hdr) Lwt.t

val recv_body : 
  transport ->
  request_hdr ->
  response_hdr ->
  response_body ->
  (unit, Protocol.Error.t) result Lwt.t

recv_body transport request_hdr response_hdr response_body returns Ok () and receives and writes the body of the response into response_body if the request has been successful, otherwise returns an Error. The request_hdr parameter is the output of a preceding recv_hdr call.

val send_one : transport -> request_hdr -> request_body -> unit Lwt.t

Send a single request. Invocations of this function will not be interleaved because they are protected by a mutex

val id_of_request : request_hdr -> id

val handle_unrequested_packet : transport -> response_hdr -> unit Lwt.t