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zmqapi.pas
2798 lines (2431 loc) · 68.7 KB
/
zmqapi.pas
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{
Copyright (c) 2012 Varga Balázs (bb.varga@gmail.com)
This file is part of 0MQ Delphi binding
0MQ Delphi binding is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 3 of the
License, or (at your option) any later version.
0MQ Delphi binding is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
}
unit zmqapi;
{$ifdef FPC}
{$mode delphi}{$H+}
{$endif}
{$I zmq.inc}
interface
uses
{$ifdef UNIX}
BaseUnix,
{$else}
Windows,
{$endif}
Classes
, SysUtils
, zmq
;
const
ZMQEAGAIN = 11;
{$ifdef UNIX}
ZMQEINTR = ESysEINTR;
{$endif}
type
{$ifdef zmq3}
TZMQMonitorEvent = (
meConnected,
meConnectDelayed,
meConnectRetried,
meListening,
meBindFailed,
meAccepted,
meAcceptFailed,
meClosed,
meCloseFailed,
meDisconnected
);
TZMQMonitorEvents = set of TZMQMonitorEvent;
const
cZMQMonitorEventsAll = [ meConnected,
meConnectDelayed,
meConnectRetried,
meListening,
meBindFailed,
meAccepted,
meAcceptFailed,
meClosed,
meCloseFailed,
meDisconnected
];
type
{$endif}
UInt64 = Int64;
EZMQException = class( Exception )
private
errnum: Integer;
public
constructor Create; overload;
constructor Create( lerrn: Integer ); overload;
property Num: Integer read errnum;
end;
TZMQContext = class;
TZMQSocket = class;
TZMQSendFlag = ( {$ifdef zmq3}sfDontWait{$else}sfNoBlock{$endif}, sfSndMore );
TZMQSendFlags = set of TZMQSendFlag;
TZMQRecvFlag = ( {$ifdef zmq3}rfDontWait{$else}rfNoBlock{$endif} );
TZMQRecvFlags = set of TZMQRecvFlag;
TZMQMessageProperty = ( mpMore );
TZMQFrame = class
private
fMessage: zmq_msg_t;
function getAsInteger: Integer;
procedure setAsInteger(const Value: Integer);
function getAsHexString: AnsiString;
procedure setAsHexString(const Value: AnsiString);
procedure CheckResult( rc: Integer );
{$ifdef zmq3}
function getProperty( prop: TZMQMessageProperty ): Integer;
procedure setProperty( prop: TZMQMessageProperty; value: Integer );
{$endif}
function getAsUtf8String: Utf8String;
procedure setAsUtf8String(const Value: Utf8String);
public
constructor create; overload;
constructor create( size: size_t ); overload;
constructor create( data: Pointer; size: size_t; ffn: free_fn; hint: Pointer = nil ); overload;
destructor Destroy; override;
procedure rebuild; overload;
procedure rebuild( size: size_t ); overload;
procedure rebuild( data: Pointer; size: size_t; ffn: free_fn; hint: Pointer = nil ); overload;
procedure move( msg: TZMQFrame );
procedure copy( msg: TZMQFrame );
function data: Pointer;
function size: size_t;
{$ifdef zmq3}
function more: Boolean;
{$endif}
function dup: TZMQFrame;
// convert the data into a readable string.
function dump: Utf8String;
// copy the whole content of the stream to the message.
procedure LoadFromStream( strm: TStream );
procedure SaveToStream( strm: TStream );
property asUtf8String: Utf8String read getAsUtf8String write setAsUtf8String;
property asHexString: AnsiString read getAsHexString write setAsHexString;
property asInteger: Integer read getAsInteger write setAsInteger;
end;
// for multipart message
TZMQMsg = class
private
msgs: TList;
csize: Cardinal;
cursor: Integer;
function getItem(indx: Integer): TZMQFrame;
protected
public
constructor create;
destructor Destroy; override;
// Return size of message, i.e. number of frames (0 or more).
function size: Integer;
// Return size of message, i.e. number of frames (0 or more).
function content_size: Integer;
// Push frame to the front of the message, i.e. before all other frames.
// Message takes ownership of frame, will destroy it when message is sent.
// Set the cursor to 0
// Returns 0 on success, -1 on error.
function push( msg: TZMQFrame ): Integer;
function pushstr( str: Utf8String ): Integer;
// Remove first frame from message, if any. Returns frame, or NULL. Caller
// now owns frame and must destroy it when finished with it.
// Set the cursor to 0
function pop: TZMQFrame;
function popstr: Utf8String;
function popint: Integer;
// Add frame to the end of the message, i.e. after all other frames.
// Message takes ownership of frame, will destroy it when message is sent.
// Set the cursor to 0
// Returns 0 on success
function add( msg: TZMQFrame ): Integer;
function addstr( msg: Utf8String ): Integer;
function addint( msg: Integer ): Integer;
// Push frame plus empty frame to front of message, before first frame.
// Message takes ownership of frame, will destroy it when message is sent.
procedure wrap( msg: TZMQFrame );
// Pop frame off front of message, caller now owns frame
// If next frame is empty, pops and destroys that empty frame.
function unwrap: TZMQFrame;
// Remove specified frame from list, if present. Does not destroy frame.
// Set the cursor to 0
procedure remove( msg: TZMQFrame );
// Set cursor to first frame in message. Returns frame, or NULL.
function first: TZMQFrame;
// Return the next frame. If there are no more frames, returns NULL. To move
// to the first frame call zmsg_first(). Advances the cursor.
function next: TZMQFrame;
// Return the last frame. If there are no frames, returns NULL.
// Set the cursor to the last
function last: TZMQFrame;
// Create copy of message, as new message object
function dup: TZMQMsg;
// dumpt message
function dump: Utf8String;
function saveasHex: Utf8String;
procedure loadfromHex( data: Utf8String );
procedure Clear;
property item[indx: Integer]: TZMQFrame read getItem; default;
end;
TZMQSocketType = ( stPair, stPub, stSub, stReq, stRep, stDealer,
stRouter, stPull, stPush, stXPub, stXSub );
TZMQPollEvent = ( pePollIn, pePollOut, pePollErr );
TZMQPollEvents = set of TZMQPollEvent;
{$ifdef zmq3}
TZMQKeepAlive = ( kaDefault, kaFalse, kaTrue );
TZMQEvent = record
event: TZMQMonitorEvent;
addr: AnsiString;
case TZMQMonitorEvent of
meConnected,
meListening,
meAccepted,
meClosed,
meDisconnected:
(
fd: Integer;
);
meConnectDelayed,
meBindFailed,
meAcceptFailed,
meCloseFailed:
(
err: Integer;
);
meConnectRetried: ( //connect_retried
interval: Integer;
);
end;
TZMQMonitorProc = procedure( event: TZMQEvent ) of object;
PZMQMonitorRec = ^TZMQMonitorRec;
TZMQMonitorRec = record
terminated: Boolean;
context: TZMQContext;
addr: AnsiString;
proc: TZMQMonitorProc;
end;
{$endif}
TZMQSocket = class
// low level
protected
fSocket: Pointer;
fContext: TZMQContext;
private
fRaiseEAgain: Boolean;
{$ifdef zmq3}
fAcceptFilter: TStringList;
fMonitorRec: PZMQMonitorRec;
fMonitorThread: THandle;
{$endif}
procedure close;
procedure setSockOpt( option: Integer; optval: Pointer; optvallen: size_t );
procedure getSockOpt( option: Integer; optval: Pointer; var optvallen: size_t );
function send( var msg: TZMQFrame; flags: Integer = 0 ): Integer; overload;
function recv( var msg: TZMQFrame; flags: Integer = 0 ): Integer; overload;
public
procedure bind( addr: AnsiString );
procedure connect( addr: AnsiString );
{$ifdef zmq3}
procedure unbind( addr: AnsiString );
procedure disconnect( addr: AnsiString );
{$endif}
// helpers
private
function CheckResult( rc: Integer ): Integer;
function getSockOptInt64( option: Integer ): Int64;
function getSockOptInteger( option: Integer ): Integer;
procedure setSockOptInt64( option: Integer; const Value: Int64 );
procedure setSockOptInteger( option: Integer; const Value: Integer );
public
constructor Create;
destructor Destroy; override;
function getSocketType: TZMQSocketType;
function getrcvMore: Boolean;
function getRcvTimeout: Integer;
function getSndTimeout: Integer;
function getAffinity: UInt64;
function getIdentity: ShortString;
function getRate: {$ifdef zmq3}Integer{$else}int64{$endif};
function getRecoveryIvl: {$ifdef zmq3}Integer{$else}int64{$endif};
function getSndBuf: {$ifdef zmq3}Integer{$else}UInt64{$endif};
function getRcvBuf: {$ifdef zmq3}Integer{$else}UInt64{$endif};
function getLinger: Integer;
function getReconnectIvl: Integer;
function getReconnectIvlMax: Integer;
function getBacklog: Integer;
function getFD: Pointer;
function getEvents: TZMQPollEvents;
function getHWM: {$ifdef zmq3}Integer{$else}UInt64{$endif};
{$ifdef zmq3}
function getSndHWM: Integer;
function getRcvHWM: Integer;
procedure setSndHWM( const Value: Integer );
procedure setRcvHWM( const Value: Integer );
procedure setMaxMsgSize( const Value: Int64 );
function getMaxMsgSize: Int64;
function getMulticastHops: Integer;
procedure setMulticastHops( const Value: Integer );
function getIPv4Only: Boolean;
procedure setIPv4Only( const Value: Boolean );
function getLastEndpoint: AnsiString;
function getKeepAlive: TZMQKeepAlive;
procedure setKeepAlive( const Value: TZMQKeepAlive );
function getKeepAliveIdle: Integer;
procedure setKeepAliveIdle( const Value: Integer );
function getKeepAliveCnt: Integer;
procedure setKeepAliveCnt( const Value: Integer );
function getKeepAliveIntvl: Integer;
procedure setKeepAliveIntvl( const Value: Integer );
function getAcceptFilter( indx: Integer ): AnsiString;
procedure setAcceptFilter( indx: Integer; const Value: AnsiString );
procedure setRouterMandatory( const Value: Boolean );
{$else}
function getSwap: Int64;
function getRecoveryIvlMSec: Int64;
function getMCastLoop: Int64;
procedure setSwap( const Value: Int64 );
procedure setRecoveryIvlMSec( const Value: Int64 );
procedure setMCastLoop( const Value: Int64 );
{$endif}
procedure setHWM( const Value: {$ifdef zmq3}Integer{$else}UInt64{$endif} );
procedure setRcvTimeout( const Value: Integer );
procedure setSndTimeout( const Value: Integer );
procedure setAffinity( const Value: UInt64 );
procedure setIdentity( const Value: ShortString );
procedure setRate( const Value: {$ifdef zmq3}Integer{$else}int64{$endif} );
procedure setRecoveryIvl( const Value: {$ifdef zmq3}Integer{$else}int64{$endif} );
procedure setSndBuf( const Value: {$ifdef zmq3}Integer{$else}UInt64{$endif} );
procedure setRcvBuf( const Value: {$ifdef zmq3}Integer{$else}UInt64{$endif} );
procedure setLinger( const Value: Integer );
procedure setReconnectIvl( const Value: Integer );
procedure setReconnectIvlMax( const Value: Integer );
procedure setBacklog( const Value: Integer );
procedure Subscribe( filter: AnsiString );
procedure unSubscribe( filter: AnsiString );
function send( var msg: TZMQFrame; flags: TZMQSendFlags = [] ): Integer; overload;
function send( strm: TStream; size: Integer; flags: TZMQSendFlags = [] ): Integer; overload;
function send( msg: Utf8String; flags: TZMQSendFlags = [] ): Integer; overload;
function send( var msgs: TZMQMsg; dontwait: Boolean = false ): Integer; overload;
function send( msg: Array of Utf8String; dontwait: Boolean = false ): Integer; overload;
function send( msg: TStrings; dontwait: Boolean = false ): Integer; overload;
{$ifdef zmq3}
function sendBuffer( const Buffer; len: Size_t; flags: TZMQSendFlags = [] ): Integer;
{$endif}
function recv( msg: TZMQFrame; flags: TZMQRecvFlags = [] ): Integer; overload;
function recv( strm: TStream; flags: TZMQRecvFlags = [] ): Integer; overload;
function recv( var msg: Utf8String; flags: TZMQRecvFlags = [] ): Integer; overload;
function recv( var msgs: TZMQMsg; flags: TZMQRecvFlags = [] ): Integer; overload;
function recv( msg: TStrings; flags: TZMQRecvFlags = [] ): Integer; overload;
{$ifdef zmq3}
function recvBuffer( var Buffer; len: size_t; flags: TZMQRecvFlags = [] ): Integer;
procedure RegisterMonitor( proc: TZMQMonitorProc; events: TZMQMonitorEvents = cZMQMonitorEventsAll );
procedure DeRegisterMonitor;
{$endif}
property SocketType: TZMQSocketType read getSocketType;
property RcvMore: Boolean read getRcvMore;
{$ifdef zmq3}
property SndHWM: Integer read getSndHWM write setSndHwm;
property RcvHWM: Integer read getRcvHWM write setRcvHwm;
property MaxMsgSize: Int64 read getMaxMsgSize write setMaxMsgSize;
property MulticastHops: Integer read getMulticastHops write setMulticastHops;
property IPv4Only: Boolean read getIPv4Only write setIPv4Only;
property LastEndpoint: AnsiString read getLastEndpoint;
property KeepAlive: TZMQKeepAlive read getKeepAlive write setKeepAlive;
property KeepAliveIdle: Integer read getKeepAliveIdle write setKeepAliveIdle;
property KeepAliveCnt: Integer read getKeepAliveCnt write setKeepAliveCnt;
property KeepAliveIntvl: Integer read getKeepAliveIntvl write setKeepAliveIntvl;
procedure AddAcceptFilter( addr: AnsiString );
property AcceptFilter[indx: Integer]: AnsiString read getAcceptFilter write setAcceptFilter;
property RouterMandatory: Boolean write setRouterMandatory;
{$else}
property Swap: Int64 read getSwap write setSwap;
property RecoveryIvlMSec: Int64 read getRecoveryIvlMSec write setRecoveryIvlMSec;
property MCastLoop: Int64 read getMCastLoop write setMCastLoop;
{$endif}
property HWM: {$ifdef zmq3}Integer{$else}UInt64{$endif} read getHWM write setHWM;
property RcvTimeout: Integer read getRcvTimeout write setRcvTimeout;
property SndTimeout: Integer read getSndTimeout write setSndTimeout;
property Affinity: UInt64 read getAffinity write setAffinity;
property Identity: ShortString read getIdentity write setIdentity;
property Rate: {$ifdef zmq3}Integer{$else}int64{$endif} read getRate write setRate;
property RecoveryIvl: {$ifdef zmq3}Integer{$else}int64{$endif} read getRecoveryIvl write setRecoveryIvl;
property SndBuf: {$ifdef zmq3}Integer{$else}UInt64{$endif} read getSndBuf write setSndBuf;
property RcvBuf: {$ifdef zmq3}Integer{$else}UInt64{$endif} read getRcvBuf write setRcvBuf;
property Linger: Integer read getLinger write setLinger;
property ReconnectIvl: Integer read getReconnectIvl write setReconnectIvl;
property ReconnectIvlMax: Integer read getReconnectIvlMax write setReconnectIvlMax;
property Backlog: Integer read getBacklog write setBacklog;
property FD: Pointer read getFD;
property Events: TZMQPollEvents read getEvents;
property Context: TZMQContext read fContext;
property SocketPtr: Pointer read fSocket;
property RaiseEAgain: Boolean read fRaiseEAgain write fRaiseEAgain;
end;
TZMQContext = class
private
fContext: Pointer;
fSockets: TList;
fLinger: Integer;
{$ifdef zmq3}
function getOption( option: Integer ): Integer;
procedure setOption( option, optval: Integer );
function getIOThreads: Integer;
procedure setIOThreads( const Value: Integer );
function getMaxSockets: Integer;
procedure setMaxSockets( const Value: Integer );
{$endif}
protected
fTerminated: Boolean;
fMainThread: Boolean;
constructor createShadow( context: TZMQContext );
procedure CheckResult( rc: Integer );
procedure RemoveSocket( lSocket: TZMQSocket );
public
constructor create{$ifndef zmq3}( io_threads: Integer = 1 ){$endif};
destructor Destroy; override;
function Shadow: TZMQContext;
function Socket( stype: TZMQSocketType ): TZMQSocket;
procedure Terminate;
property ContextPtr: Pointer read fContext;
// < -1 means dont change linger when destroy
property Linger: Integer read fLinger write fLinger;
property Terminated: Boolean read fTerminated;
{$ifdef zmq3}
property IOThreads: Integer read getIOThreads write setIOThreads;
property MaxSockets: Integer read getMaxSockets write setMaxSockets;
{$endif}
end;
type
TZMQFree = zmq.free_fn;
TZMQPollItem = record
socket: TZMQSocket;
events: TZMQPollEvents;
revents: TZMQPollEvents;
end;
TZMQPollItemA = array of TZMQPollItem;
TZMQPollEventProc = procedure( socket: TZMQSocket; event: TZMQPollEvents ) of object;
TZMQExceptionProc = procedure( exception: Exception ) of object;
TZMQPoller = class( TThread )
private
fContext: TZMQContext;
fOwnContext: Boolean;
sPair: TZMQSocket;
fAddr: AnsiString;
fPollItem: array of zmq.pollitem_t;
fPollSocket: array of TZMQSocket;
fPollItemCapacity,
fPollItemCount: Integer;
fTimeOut: Integer;
fPollNumber: Integer;
cs: TRTLCriticalSection;
fSync: Boolean;
fonException: TZMQExceptionProc;
fonTimeOut: TNotifyEvent;
fonEvent: TZMQPollEventProc;
function getPollItem(indx: Integer): TZMQPollItem;
procedure CheckResult( rc: Integer );
procedure AddToPollItems( socket: TZMQSocket; events: TZMQPollEvents );
procedure DelFromPollItems( socket: TZMQSocket; events: TZMQPollEvents; indx: Integer );
function getPollResult(indx: Integer): TZMQPollItem;
protected
procedure Execute; override;
public
constructor Create( lSync: Boolean = false; lContext: TZMQContext = nil );
destructor Destroy; override;
procedure Register( socket: TZMQSocket; events: TZMQPollEvents; bWait: Boolean = false );
procedure Deregister( socket: TZMQSocket; events: TZMQPollEvents; bWait: Boolean = false );
procedure setPollNumber( const Value: Integer; bWait: Boolean = false );
function poll( timeout: Longint = -1; lPollNumber: Integer = -1 ): Integer;
property pollResult[indx: Integer]: TZMQPollItem read getPollResult;
property PollNumber: Integer read fPollNumber;
property PollItem[indx: Integer]: TZMQPollItem read getPollItem;
property onEvent: TZMQPollEventProc read fonEvent write fonEvent;
property onException: TZMQExceptionProc read fonException write fonException;
property onTimeOut: TNotifyEvent read fonTimeOut write fonTimeOut;
end;
TZMQDevice = ( dStreamer, dForwarder, dQueue );
TZMQPollRec = record
socket: TZMQSocket;
events: TZMQPollEvents;
end;
TZMQPollRecA = array of TZMQPollRec;
function ZMQPoll( var pia: TZMQPollItemA; piaSize: Integer = -1; timeout: Integer = -1 ): Integer; overload;
function ZMQPoll( var pia: TZMQPollItem; piaSize: Integer = 1; timeout: Integer = -1 ): Integer; overload;
{$ifdef zmq3}
procedure ZMQProxy( frontend, backend, capture: TZMQSocket );
{$endif}
procedure ZMQDevice( device: TZMQDevice; insocket, outsocket: TZMQSocket );
procedure ZMQVersion(var major, minor, patch: Integer);
procedure ZMQTerminate;
var
ZMQTerminated: Boolean = false;
type
// Thread related functions.
TDetachedThreadMeth = procedure( args: Pointer; context: TZMQContext ) of object;
TAttachedThreadMeth = procedure( args: Pointer; Context: TZMQContext; Pipe: TZMQSocket ) of object;
TDetachedThreadProc = procedure( args: Pointer; context: TZMQContext );
TAttachedThreadProc = procedure( args: Pointer; Context: TZMQContext; Pipe: TZMQSocket );
TZMQThread = class( TThread )
private
//attached thread pipe
fPipe: TZMQSocket;
// attached thread pipe in the new thread.
thrPipe: TZMQSocket;
fDetachedMeth: TDetachedThreadMeth;
fAttachedMeth: TAttachedThreadMeth;
fDetachedProc: TDetachedThreadProc;
fAttachedProc: TAttachedThreadProc;
fContext: TZMQContext;
fArgs: Pointer;
public
constructor Create( lArgs: Pointer; ctx: TZMQContext );
constructor CreateAttached( lAttachedMeth: TAttachedThreadMeth; ctx: TZMQContext; lArgs: Pointer );
constructor CreateDetached( lDetachedMeth: TDetachedThreadMeth; lArgs: Pointer );
constructor CreateAttachedProc( lAttachedProc: TAttachedThreadProc; ctx: TZMQContext; lArgs: Pointer );
constructor CreateDetachedProc( lDetachedProc: TDetachedThreadProc; lArgs: Pointer );
destructor Destroy; override;
protected
procedure Execute; override;
procedure DoExecute; virtual;
public
property Pipe: TZMQSocket read fPipe;
property Args: Pointer read fArgs;
property Context: TZMQContext read fContext;
end;
implementation
var
contexts: TList;
cs: TRTLCriticalSection;
{$ifndef UNIX}
function console_handler( dwCtrlType: DWORD ): BOOL; stdcall; forward;
{$endif}
{ EZMQException }
constructor EZMQException.Create;
begin
errnum := zmq_errno;
inherited Create( String( AnsiString( zmq_strerror( errnum ) ) ) );
end;
constructor EZMQException.Create( lerrn: Integer );
begin
errnum := lerrn;
inherited Create( String( AnsiString( zmq_strerror( errnum ) ) ) );
end;
{ TZMQMessage }
constructor TZMQFrame.Create;
begin
CheckResult( zmq_msg_init( fMessage ) );
end;
constructor TZMQFrame.Create( size: size_t );
begin
CheckResult( zmq_msg_init_size( fMessage, size ) );
end;
constructor TZMQFrame.Create( data: Pointer; size: size_t;
ffn: free_fn; hint: Pointer );
begin
CheckResult( zmq_msg_init_data( fMessage, data, size, ffn, hint ) );
end;
destructor TZMQFrame.Destroy;
begin
CheckResult( zmq_msg_close( fMessage ) );
inherited;
end;
procedure TZMQFrame.CheckResult( rc: Integer );
begin
if rc = 0 then
begin
// ok
end else
if rc = -1 then
begin
raise EZMQException.Create;
end else
raise EZMQException.Create('Function result is not 0, or -1!');
end;
procedure TZMQFrame.rebuild;
begin
CheckResult( zmq_msg_close( fMessage ) );
CheckResult( zmq_msg_init( fMessage ) );
end;
procedure TZMQFrame.rebuild( size: size_t );
begin
CheckResult( zmq_msg_close( fMessage ) );
CheckResult( zmq_msg_init_size( fMessage, size ) );
end;
procedure TZMQFrame.rebuild( data: Pointer; size: size_t; ffn: free_fn; hint: Pointer = nil );
begin
CheckResult( zmq_msg_close( fMessage ) );
CheckResult( zmq_msg_init_data( fMessage, data, size, ffn, hint ) );
end;
procedure TZMQFrame.move( msg: TZMQFrame );
begin
CheckResult( zmq_msg_move( fMessage, msg.fMessage ) );
end;
procedure TZMQFrame.copy( msg: TZMQFrame );
begin
CheckResult( zmq_msg_copy( fMessage, msg.fMessage ) );
end;
function TZMQFrame.data: Pointer;
begin
result := zmq_msg_data( fMessage );
end;
function TZMQFrame.size: size_t;
begin
result := zmq_msg_size( fMessage );
end;
{$ifdef zmq3}
function TZMQFrame.getProperty( prop: TZMQMessageProperty ): Integer;
begin
result := zmq_msg_get( fMessage, Byte( prop ) );
if result = -1 then
raise EZMQException.Create
else
raise EZMQException.Create( 'zmq_msg_more return value undefined!' );
end;
procedure TZMQFrame.setProperty( prop: TZMQMessageProperty; value: Integer );
begin
CheckResult( zmq_msg_set( fMessage, Byte( prop ), value ) );
end;
function TZMQFrame.more: Boolean;
var
rc: Integer;
begin
rc := zmq_msg_more( fMessage );
if rc = 0 then
result := false else
if rc = 1 then
result := true else
raise EZMQException.Create( 'zmq_msg_more return value undefined!' );
end;
{$endif}
function TZMQFrame.dup: TZMQFrame;
begin
result := TZMQFrame.create( size );
System.Move( data^, result.data^, size );
end;
function TZMQFrame.dump: Utf8String;
var
sUtf8: Utf8String;
iSize: Integer;
begin
// not complete.
iSize := size;
if iSize = 0 then
result := ''
else if AnsiChar(data^) = #0 then
begin
SetLength( sutf8, iSize * 2 );
BinToHex( data, PAnsiChar(sutf8), iSize );
result := sutf8;
end else
result := asUtf8String;
end;
function TZMQFrame.getAsHexString: AnsiString;
begin
SetLength( result, size * 2 );
BinToHex( data, PAnsiChar(result), size );
end;
function TZMQFrame.getAsInteger: Integer;
begin
result := Integer(data^);
end;
function TZMQFrame.getAsUtf8String: Utf8String;
var
t: AnsiString;
begin
SetString( t, PAnsiChar(data), size );
result := t;
end;
procedure TZMQFrame.setAsHexString( const Value: AnsiString );
var
iSize: Integer;
begin
iSize := Length( Value ) div 2;
rebuild( iSize );
HexToBin( PAnsiChar( value ), data, iSize );
end;
procedure TZMQFrame.setAsInteger( const Value: Integer );
var
iSize: Integer;
begin
iSize := SizeOf( Value );
rebuild( iSize );
Integer(data^) := Value;
end;
procedure TZMQFrame.setAsUtf8String( const Value: Utf8String );
var
iSize: Integer;
begin
iSize := Length( Value );
rebuild( iSize );
System.Move( Value[1], data^, iSize );
end;
procedure TZMQFrame.LoadFromStream( strm: TStream );
begin
strm.Position := 0;
if strm.size <> size then
rebuild( strm.Size );
strm.ReadBuffer( data^, strm.Size );
end;
procedure TZMQFrame.SaveToStream( strm: TStream );
begin
strm.WriteBuffer( data^, size );
end;
{ TZMQMsg }
constructor TZMQMsg.create;
begin
msgs := TList.Create;
csize := 0;
cursor := 0;
end;
destructor TZMQMsg.Destroy;
begin
Clear;
msgs.Free;
inherited;
end;
function TZMQMsg.size: Integer;
begin
result := msgs.Count;
end;
function TZMQMsg.content_size: Integer;
begin
result := csize;
end;
function TZMQMsg.push( msg: TZMQFrame ): Integer;
begin
try
msgs.Insert( 0, msg );
csize := csize + msg.size;
result := 0;
cursor := 0;
except
result := -1
end;
end;
function TZMQMsg.pushstr( str: Utf8String ): Integer;
var
frm: TZMQFrame;
begin
frm := TZMQFrame.create;
frm.asUtf8String := str;
result := push( frm );
end;
function TZMQMsg.pop: TZMQFrame;
begin
if size > 0 then
begin
result := msgs[0];
csize := csize - result.size;
msgs.Delete( 0 );
cursor := 0;
end else
result := nil;
end;
function TZMQMsg.popstr: Utf8String;
var
frame: TZMQFrame;
begin
frame := pop;
try
result := frame.asUtf8String;
finally
frame.Free;
end;
end;
function TZMQMsg.popint: Integer;
var
frame: TZMQFrame;
begin
frame := pop;
try
result := frame.asInteger;
finally
frame.Free;
end;
end;
function TZMQMsg.add( msg: TZMQFrame ): Integer;
begin
try
msgs.Add( msg );
csize := csize + msg.size;
result := 0;
cursor := 0;
except
result := -1;
end;
end;
function TZMQMsg.addstr( msg: Utf8String ): Integer;
var
frame: TZMQFrame;
begin
frame := TZMQFrame.create;
frame.asUtf8String := msg;
result := add( frame );
end;
function TZMQMsg.addint( msg: Integer ): Integer;
var
frame: TZMQFrame;
begin
frame := TZMQFrame.create( sizeOf( Integer ) );
frame.asInteger := msg;
result := add( frame );
end;
procedure TZMQMsg.wrap( msg: TZMQFrame );
begin
push( TZMQFrame.create( 0 ) );
push( msg );
end;
function TZMQMsg.unwrap: TZMQFrame;
begin
result := pop;
if ( size > 0 ) and ( Item[0].size = 0 ) then
pop.Free;
end;
procedure TZMQMsg.remove( msg: TZMQFrame );
var
i: Integer;
begin
i := msgs.IndexOf( msg );
if i > 0 then
begin
csize := csize - Item[i].size;
msgs.Delete( i );
cursor := 0;
end;
end;
function TZMQMsg.first: TZMQFrame;
begin
if size > 0 then
begin
result := msgs[0];
cursor := 1;
end else begin
result := nil;
cursor := 0;
end;
end;
function TZMQMsg.next: TZMQFrame;
begin
if cursor < size then
begin
result := msgs[cursor];
inc( cursor );
end else
result := nil;
end;
function TZMQMsg.last: TZMQFrame;
begin
if size > 0 then
result := msgs[size - 1]
else
result := nil;
cursor := size;
end;
function TZMQMsg.dup: TZMQMsg;
var
msg,
msgnew: TZMQFrame;
iSize: Integer;
begin
result := TZMQMsg.create;
msg := first;
while msg <> nil do
begin
iSize := msg.size;