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@@ -1,637 +0,0 @@
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-{
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- $Id$
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-
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- HTTP: Classes for dealing with HTTP requests
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- Copyright (C) 2000 by Sebastian Guenther ([email protected])
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-
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- See the file COPYING.FPC, included in this distribution,
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- for details about the copyright.
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-
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- This program is distributed in the hope that it will be useful,
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- but WITHOUT ANY WARRANTY; without even the implied warranty of
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- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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-}
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-
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-
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-{$MODE objfpc}
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-{$H+}
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-
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-unit HTTP;
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-
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-interface
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-
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-uses Classes, AsyncIO, SSockets;
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-
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-const
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-
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- fieldAccept = 'Accept';
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- fieldAcceptCharset = 'Accept-Charset';
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- fieldAcceptEncoding = 'Accept-Encoding';
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- fieldAcceptLanguage = 'Accept-Language';
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- fieldAuthorization = 'Authorization';
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- fieldContentEncoding = 'Content-Encoding';
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- fieldContentLanguage = 'Content-Language';
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- fieldContentLength = 'Content-Length';
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- fieldContentType = 'Content-Type';
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- fieldCookie = 'Cookie';
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- fieldDate = 'Date';
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- fieldExpires = 'Expires';
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- fieldFrom = 'From';
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- fieldIfModifiedSince = 'If-Modified-Since';
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- fieldLastModified = 'Last-Modified';
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- fieldLocation = 'Location';
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- fieldPragma = 'Pragma';
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- fieldReferer = 'Referer';
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- fieldRetryAfter = 'Retry-After';
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- fieldServer = 'Server';
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- fieldSetCookie = 'Set-Cookie';
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- fieldUserAgent = 'User-Agent';
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- fieldWWWAuthenticate = 'WWW-Authenticate';
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-
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-type
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-
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- PHttpField = ^THttpField;
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- THttpField = record
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- Name, Value: String;
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- end;
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-
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-
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- THttpHeader = class
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- protected
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- FReader: TAsyncStreamLineReader;
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- FWriter: TAsyncWriteStream;
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- FOnCompleted: TNotifyEvent;
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- FFields: TList;
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- CmdReceived: Boolean;
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-
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- procedure ParseFirstHeaderLine(const line: String); virtual; abstract;
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- procedure LineReceived(const line: String);
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- function GetFirstHeaderLine: String; virtual; abstract;
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- procedure WriterCompleted(ASender: TObject);
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-
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- function GetFieldCount: Integer;
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- function GetFields(AIndex: Integer): String;
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- function GetFieldNames(AIndex: Integer): String;
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- procedure SetFieldNames(AIndex: Integer; const AName: String);
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- function GetFieldValues(AIndex: Integer): String;
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- procedure SetFieldValues(AIndex: Integer; const AValue: String);
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-
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-
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- function GetAccept: String;
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- procedure SetAccept(const AValue: String);
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- function GetAcceptCharset: String;
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- procedure SetAcceptCharset(const AValue: String);
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- function GetAcceptEncoding: String;
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- procedure SetAcceptEncoding(const AValue: String);
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- function GetAcceptLanguage: String;
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- procedure SetAcceptLanguage(const AValue: String);
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- function GetAuthorization: String;
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- procedure SetAuthorization(const AValue: String);
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- function GetContentEncoding: String;
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- procedure SetContentEncoding(const AValue: String);
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- function GetContentLanguage: String;
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- procedure SetContentLanguage(const AValue: String);
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- function GetContentLength: Integer;
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- procedure SetContentLength(AValue: Integer);
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- function GetContentType: String;
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- procedure SetContentType(const AValue: String);
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- function Get_Cookie: String;
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- procedure Set_Cookie(const AValue: String);
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- function GetDate: String;
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- procedure SetDate(const AValue: String);
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- function GetExpires: String;
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- procedure SetExpires(const AValue: String);
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- function GetFrom: String;
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- procedure SetFrom(const AValue: String);
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- function GetIfModifiedSince: String;
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- procedure SetIfModifiedSince(const AValue: String);
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- function GetLastModified: String;
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- procedure SetLastModified(const AValue: String);
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- function GetLocation: String;
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- procedure SetLocation(const AValue: String);
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- function GetPragma: String;
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- procedure SetPragma(const AValue: String);
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- function GetReferer: String;
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- procedure SetReferer(const AValue: String);
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- function GetRetryAfter: String;
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- procedure SetRetryAfter(const AValue: String);
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- function GetServer: String;
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- procedure SetServer(const AValue: String);
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- function Get_SetCookie: String;
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- procedure Set_SetCookie(const AValue: String);
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- function GetUserAgent: String;
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- procedure SetUserAgent(const AValue: String);
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- function GetWWWAuthenticate: String;
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- procedure SetWWWAuthenticate(const AValue: String);
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-
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- public
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- HttpVersion: String;
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-
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- constructor Create;
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- destructor Destroy; override;
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- procedure SetFieldByName(const AName, AValue: String);
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- function GetFieldByName(const AName: String): String;
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-
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- procedure AsyncSend(AManager: TAsyncIOManager; AStream: THandleStream);
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- procedure AsyncReceive(AManager: TAsyncIOManager; AStream: THandleStream);
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-
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- property Reader: TAsyncStreamLineReader read FReader;
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- property Writer: TAsyncWriteStream read FWriter;
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- property FieldCount: Integer read GetFieldCount;
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- property Fields[AIndex: Integer]: String read GetFields;
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- property FieldNames[AIndex: Integer]: String read GetFieldNames write SetFieldNames;
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- property FieldValues[AIndex: Integer]: String read GetFieldValues write SetFieldValues;
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-
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- property OnCompleted: TNotifyEvent read FOnCompleted write FOnCompleted;
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-
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- property Accept: String read GetAccept write SetAccept;
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- property AcceptCharset: String read GetAcceptCharset write SetAcceptCharset;
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- property AcceptEncoding: String read GetAcceptEncoding write SetAcceptEncoding;
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- property AcceptLanguage: String read GetAcceptLanguage write SetAcceptLanguage;
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- property Authorization: String read GetAuthorization write SetAuthorization;
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- property ContentEncoding: String read GetContentEncoding write SetContentEncoding;
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- property ContentLanguage: String read GetContentLanguage write SetContentLanguage;
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- property ContentLength: Integer read GetContentLength write SetContentLength;
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- property ContentType: String read GetContentType write SetContentType;
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- property Cookie: String read Get_Cookie write Set_Cookie;
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- property Date: String read GetDate write SetDate;
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- property Expires: String read GetExpires write SetExpires;
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- property From: String read GetFrom write SetFrom;
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- property IfModifiedSince: String read GetIfModifiedSince write SetIfModifiedSince;
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- property LastModified: String read GetLastModified write SetLastModified;
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- property Location: String read GetLocation write SetLocation;
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- property Pragma: String read GetPragma write SetPragma;
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- property Referer: String read GetReferer write SetReferer;
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- property RetryAfter: String read GetRetryAfter write SetRetryAfter;
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- property Server: String read GetServer write SetServer;
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- property SetCookie: String read Get_SetCookie write Set_SetCookie;
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- property UserAgent: String read GetUserAgent write SetUserAgent;
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- property WWWAuthenticate: String read GetWWWAuthenticate write SetWWWAuthenticate;
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- end;
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-
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-
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- THttpRequestHeader = class(THttpHeader)
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- protected
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- procedure ParseFirstHeaderLine(const line: String); override;
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- function GetFirstHeaderLine: String; override;
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- public
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- CommandLine: String;
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- Command: String;
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- URI: String; // Uniform Resource Identifier
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- end;
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-
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-
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- THttpAnswerHeader = class(THttpHeader)
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- protected
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- procedure ParseFirstHeaderLine(const line: String); override;
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- function GetFirstHeaderLine: String; override;
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- public
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- Code: Integer;
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- CodeText: String;
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- constructor Create;
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- end;
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-
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-
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- TCustomHttpConnection = class
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- protected
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- FManager: TAsyncIOManager;
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- FSocket: TInetSocket;
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- SendBuffer: TAsyncWriteStream;
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- FOnHeaderSent, FOnStreamSent, FOnHeaderReceived, FOnStreamReceived: TNotifyEvent;
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- RecvSize: Integer; // How many bytes are still to be read. -1 if unknown.
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-
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- procedure HeaderToSendCompleted(Sender: TObject);
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- procedure StreamToSendCompleted(Sender: TObject);
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- procedure ReceivedHeaderCompleted(Sender: TObject);
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- procedure DataAvailable(Sender: TObject);
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- procedure ReceivedStreamCompleted(Sender: TObject);
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-
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- property OnHeaderSent: TNotifyEvent read FOnHeaderSent write FOnHeaderSent;
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- property OnStreamSent: TNotifyEvent read FOnStreamSent write FOnStreamSent;
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- property OnHeaderReceived: TNotifyEvent read FOnHeaderReceived write FOnHeaderReceived;
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- property OnStreamReceived: TNotifyEvent read FOnStreamReceived write FOnStreamReceived;
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-
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- public
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- HeaderToSend: THttpHeader;
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- StreamToSend: TStream;
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- ReceivedHeader: THttpHeader;
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- ReceivedStream: TStream;
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-
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- constructor Create(AManager: TAsyncIOManager; ASocket: TInetSocket);
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- destructor Destroy; override;
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- procedure Start;
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- end;
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-
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- THttpConnection = class(TCustomHttpConnection)
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- public
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- property OnHeaderSent;
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- property OnStreamSent;
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- property OnHeaderReceived;
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- property OnStreamReceived;
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- end;
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-
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-
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-
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-// ===================================================================
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-// ===================================================================
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-
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-implementation
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-
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-uses SysUtils;
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-
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-
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-// -------------------------------------------------------------------
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-// THttpHeader
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-// -------------------------------------------------------------------
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-
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-procedure THttpHeader.LineReceived(const line: String);
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-var
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- i: Integer;
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-begin
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- if Length(line) = 0 then
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- begin
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- FReader.OnLine := nil; // Stop receiving
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- if Assigned(FOnCompleted) then
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- FOnCompleted(Self);
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- FReader.Free;
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- FReader := nil;
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- end else
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- if not CmdReceived then
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- begin
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- CmdReceived := True;
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- ParseFirstHeaderLine(line);
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- end else
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- begin
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- i := Pos(':', line);
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- SetFieldByName(Trim(Copy(line, 1, i - 1)), Trim(Copy(line, i + 1, Length(line))));
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- end;
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-end;
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-
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-procedure THttpHeader.WriterCompleted(ASender: TObject);
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-begin
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- if Assigned(FOnCompleted) then
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- FOnCompleted(Self);
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-end;
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-
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-function THttpHeader.GetFieldCount: Integer;
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-begin
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- Result := FFields.Count;
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-end;
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-
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-function THttpHeader.GetFields(AIndex: Integer): String;
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-begin
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- Result := FieldNames[AIndex] + ': ' + FieldValues[AIndex];
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-end;
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-
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-function THttpHeader.GetFieldNames(AIndex: Integer): String;
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-begin
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- Result := PHttpField(FFields.Items[AIndex])^.Name;
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-end;
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-
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-procedure THttpHeader.SetFieldNames(AIndex: Integer; const AName: String);
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-begin
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- PHttpField(FFields.Items[AIndex])^.Name := AName;
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-end;
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-
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-function THttpHeader.GetFieldValues(AIndex: Integer): String;
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-begin
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- Result := PHttpField(FFields.Items[AIndex])^.Value;
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-end;
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-
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-procedure THttpHeader.SetFieldValues(AIndex: Integer; const AValue: String);
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-begin
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- PHttpField(FFields.Items[AIndex])^.Name := AValue;
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-end;
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-
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-function THttpHeader.GetAccept: String; begin Result := GetFieldByName(fieldAccept) end;
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-procedure THttpHeader.SetAccept(const AValue: String); begin SetFieldByName(fieldAccept, AValue) end;
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-function THttpHeader.GetAcceptCharset: String; begin Result := GetFieldByName(fieldAcceptCharset) end;
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-procedure THttpHeader.SetAcceptCharset(const AValue: String); begin SetFieldByName(fieldAcceptCharset, AValue) end;
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-function THttpHeader.GetAcceptEncoding: String; begin Result := GetFieldByName(fieldAcceptEncoding) end;
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-procedure THttpHeader.SetAcceptEncoding(const AValue: String); begin SetFieldByName(fieldAcceptEncoding, AValue) end;
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-function THttpHeader.GetAcceptLanguage: String; begin Result := GetFieldByName(fieldAcceptLanguage) end;
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-procedure THttpHeader.SetAcceptLanguage(const AValue: String); begin SetFieldByName(fieldAcceptLanguage, AValue) end;
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-function THttpHeader.GetAuthorization: String; begin Result := GetFieldByName(fieldAuthorization) end;
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-procedure THttpHeader.SetAuthorization(const AValue: String); begin SetFieldByName(fieldAuthorization, AValue) end;
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-function THttpHeader.GetContentEncoding: String; begin Result := GetFieldByName(fieldContentEncoding) end;
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-procedure THttpHeader.SetContentEncoding(const AValue: String); begin SetFieldByName(fieldContentEncoding, AValue) end;
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-function THttpHeader.GetContentLanguage: String; begin Result := GetFieldByName(fieldContentLanguage) end;
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-procedure THttpHeader.SetContentLanguage(const AValue: String); begin SetFieldByName(fieldContentLanguage, AValue) end;
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-function THttpHeader.GetContentLength: Integer; var s: String; begin s := GetFieldByName(fieldContentLength); if Length(s) = 0 then Result := -1 else Result := StrToInt(s) end;
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-procedure THttpHeader.SetContentLength(AValue: Integer); begin SetFieldByName(fieldContentLength, IntToStr(AValue)) end;
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-function THttpHeader.GetContentType: String; begin Result := GetFieldByName(fieldContentType) end;
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-procedure THttpHeader.SetContentType(const AValue: String); begin SetFieldByName(fieldContentType, AValue) end;
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-function THttpHeader.Get_Cookie: String; begin Result := GetFieldByName(fieldCookie) end;
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-procedure THttpHeader.Set_Cookie(const AValue: String); begin SetFieldByName(fieldCookie, AValue) end;
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-function THttpHeader.GetDate: String; begin Result := GetFieldByName(fieldDate) end;
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-procedure THttpHeader.SetDate(const AValue: String); begin SetFieldByName(fieldDate, AValue) end;
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-function THttpHeader.GetExpires: String; begin Result := GetFieldByName(fieldExpires) end;
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-procedure THttpHeader.SetExpires(const AValue: String); begin SetFieldByName(fieldExpires, AValue) end;
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-function THttpHeader.GetFrom: String; begin Result := GetFieldByName(fieldFrom) end;
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-procedure THttpHeader.SetFrom(const AValue: String); begin SetFieldByName(fieldFrom, AValue) end;
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-function THttpHeader.GetIfModifiedSince: String; begin Result := GetFieldByName(fieldIfModifiedSince) end;
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-procedure THttpHeader.SetIfModifiedSince(const AValue: String); begin SetFieldByName(fieldIfModifiedSince, AValue) end;
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-function THttpHeader.GetLastModified: String; begin Result := GetFieldByName(fieldLastModified) end;
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-procedure THttpHeader.SetLastModified(const AValue: String); begin SetFieldByName(fieldLastModified, AValue) end;
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-function THttpHeader.GetLocation: String; begin Result := GetFieldByName(fieldLocation) end;
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-procedure THttpHeader.SetLocation(const AValue: String); begin SetFieldByName(fieldLocation, AValue) end;
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-function THttpHeader.GetPragma: String; begin Result := GetFieldByName(fieldPragma) end;
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-procedure THttpHeader.SetPragma(const AValue: String); begin SetFieldByName(fieldPragma, AValue) end;
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-function THttpHeader.GetReferer: String; begin Result := GetFieldByName(fieldReferer) end;
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-procedure THttpHeader.SetReferer(const AValue: String); begin SetFieldByName(fieldReferer, AValue) end;
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-function THttpHeader.GetRetryAfter: String; begin Result := GetFieldByName(fieldRetryAfter) end;
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-procedure THttpHeader.SetRetryAfter(const AValue: String); begin SetFieldByName(fieldRetryAfter, AValue) end;
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-function THttpHeader.GetServer: String; begin Result := GetFieldByName(fieldServer) end;
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-procedure THttpHeader.SetServer(const AValue: String); begin SetFieldByName(fieldServer, AValue) end;
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-function THttpHeader.Get_SetCookie: String; begin Result := GetFieldByName(fieldSetCookie) end;
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-procedure THttpHeader.Set_SetCookie(const AValue: String); begin SetFieldByName(fieldSetCookie, AValue) end;
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-function THttpHeader.GetUserAgent: String; begin Result := GetFieldByName(fieldUserAgent) end;
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-procedure THttpHeader.SetUserAgent(const AValue: String); begin SetFieldByName(fieldUserAgent, AValue) end;
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-function THttpHeader.GetWWWAuthenticate: String; begin Result := GetFieldByName(fieldWWWAuthenticate) end;
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-procedure THttpHeader.SetWWWAuthenticate(const AValue: String); begin SetFieldByName(fieldWWWAuthenticate, AValue) end;
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-
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-constructor THttpHeader.Create;
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-begin
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- inherited Create;
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- FFields := TList.Create;
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- HttpVersion := '1.0';
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-end;
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-
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-destructor THttpHeader.Destroy;
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-var
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- i: Integer;
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- field: PHttpField;
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-begin
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- FReader.Free;
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- FWriter.Free;
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- for i := 0 to FFields.Count - 1 do begin
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- field := PHttpField(FFields.Items[i]);
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- SetLength(field^.Name, 0);
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- SetLength(field^.Value, 0);
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- Dispose(field);
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- end;
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- FFields.Free;
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- inherited Destroy;
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-end;
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|
-
|
|
|
-function THttpHeader.GetFieldByName(const AName: String): String;
|
|
|
-var
|
|
|
- i: Integer;
|
|
|
- name: String;
|
|
|
-begin
|
|
|
- name := UpperCase(AName);
|
|
|
- for i := 0 to FFields.Count - 1 do
|
|
|
- if UpperCase(FieldNames[i]) = name then begin
|
|
|
- Result := FieldValues[i];
|
|
|
- exit;
|
|
|
- end;
|
|
|
- SetLength(Result, 0);
|
|
|
-end;
|
|
|
-
|
|
|
-procedure THttpHeader.SetFieldByName(const AName, AValue: String);
|
|
|
-var
|
|
|
- i: Integer;
|
|
|
- name: String;
|
|
|
- field: PHttpField;
|
|
|
-begin
|
|
|
- name := UpperCase(AName);
|
|
|
- for i := 0 to FFields.Count - 1 do
|
|
|
- if UpperCase(FieldNames[i]) = name then begin
|
|
|
- FieldNames[i] := AName; // preserve case
|
|
|
- FieldValues[i] := AValue;
|
|
|
- exit;
|
|
|
- end;
|
|
|
- New(field);
|
|
|
- FillChar(field^, SizeOf(field^), 0);
|
|
|
- field^.Name := AName;
|
|
|
- field^.Value := AValue;
|
|
|
- FFields.Add(field);
|
|
|
-end;
|
|
|
-
|
|
|
-procedure THttpHeader.AsyncSend(AManager: TAsyncIOManager; AStream: THandleStream);
|
|
|
-var
|
|
|
- i: Integer;
|
|
|
-begin
|
|
|
- FWriter.Free;
|
|
|
- FWriter := TAsyncWriteStream.Create(AManager, AStream);
|
|
|
- FWriter.OnBufferEmpty := @WriterCompleted;
|
|
|
- FWriter.EndOfLineMarker := #13#10;
|
|
|
- FWriter.WriteLine(GetFirstHeaderLine);
|
|
|
- for i := 0 to FFields.Count - 1 do
|
|
|
- FWriter.WriteLine(Fields[i]);
|
|
|
- FWriter.WriteLine('');
|
|
|
-end;
|
|
|
-
|
|
|
-procedure THttpHeader.AsyncReceive(AManager: TAsyncIOManager; AStream: THandleStream);
|
|
|
-begin
|
|
|
- CmdReceived := False;
|
|
|
- FReader.Free;
|
|
|
- FReader := TAsyncStreamLineReader.Create(AManager, AStream);
|
|
|
- FReader.OnLine := @LineReceived;
|
|
|
-end;
|
|
|
-
|
|
|
-
|
|
|
-// -------------------------------------------------------------------
|
|
|
-// THttpRequestHeader
|
|
|
-// -------------------------------------------------------------------
|
|
|
-
|
|
|
-procedure THttpRequestHeader.ParseFirstHeaderLine(const line: String);
|
|
|
-var
|
|
|
- i: Integer;
|
|
|
-begin
|
|
|
- CommandLine := line;
|
|
|
- i := Pos(' ', line);
|
|
|
- Command := Copy(line, 1, i - 1);
|
|
|
- URI := Copy(line, i + 1, Length(line));
|
|
|
- i := Pos(' ', URI);
|
|
|
- if i > 0 then begin
|
|
|
- HttpVersion := Copy(URI, i + 1, Length(URI));
|
|
|
- URI := Copy(URI, 1, i - 1);
|
|
|
- HttpVersion := Copy(HttpVersion, Pos('/', HttpVersion) + 1, Length(HttpVersion));
|
|
|
- end;
|
|
|
-end;
|
|
|
-
|
|
|
-function THttpRequestHeader.GetFirstHeaderLine: String;
|
|
|
-begin
|
|
|
- Result := Command + ' ' + URI;
|
|
|
- if Length(HttpVersion) > 0 then
|
|
|
- Result := Result + ' HTTP/' + HttpVersion;
|
|
|
-end;
|
|
|
-
|
|
|
-
|
|
|
-// -------------------------------------------------------------------
|
|
|
-// THttpAnswerHeader
|
|
|
-// -------------------------------------------------------------------
|
|
|
-
|
|
|
-procedure THttpAnswerHeader.ParseFirstHeaderLine(const line: String);
|
|
|
-var
|
|
|
- i: Integer;
|
|
|
- s: String;
|
|
|
-begin
|
|
|
- i := Pos('/', line);
|
|
|
- s := Copy(line, i + 1, Length(line));
|
|
|
- i := Pos(' ', s);
|
|
|
- HttpVersion := Copy(s, 1, i - 1);
|
|
|
- s := Copy(s, i + 1, Length(s));
|
|
|
- i := Pos(' ', s);
|
|
|
- if i > 0 then begin
|
|
|
- CodeText := Copy(s, i + 1, Length(s));
|
|
|
- s := Copy(s, 1, i - 1);
|
|
|
- end;
|
|
|
- Code := StrToInt(s);
|
|
|
-end;
|
|
|
-
|
|
|
-function THttpAnswerHeader.GetFirstHeaderLine: String;
|
|
|
-begin
|
|
|
- Result := Format('HTTP/%s %d %s', [HttpVersion, Code, CodeText]);
|
|
|
-end;
|
|
|
-
|
|
|
-constructor THttpAnswerHeader.Create;
|
|
|
-begin
|
|
|
- inherited Create;
|
|
|
- Code := 200;
|
|
|
- CodeText := 'OK';
|
|
|
-end;
|
|
|
-
|
|
|
-
|
|
|
-// -------------------------------------------------------------------
|
|
|
-// TCustomHttpConnection
|
|
|
-// -------------------------------------------------------------------
|
|
|
-
|
|
|
-procedure TCustomHttpConnection.HeaderToSendCompleted(Sender: TObject);
|
|
|
-begin
|
|
|
- //WriteLn('TCustomHttpConnection.HeaderToSendCompleted');
|
|
|
- if Assigned(FOnHeaderSent) then
|
|
|
- FOnHeaderSent(Self);
|
|
|
- if Assigned(StreamToSend) then begin
|
|
|
- SendBuffer := TAsyncWriteStream.Create(FManager, FSocket);
|
|
|
- SendBuffer.CopyFrom(StreamToSend, StreamToSend.Size);
|
|
|
- SendBuffer.OnBufferEmpty := @StreamToSendCompleted;
|
|
|
- SendBuffer.Run;
|
|
|
- end else
|
|
|
- StreamToSendCompleted(nil);
|
|
|
-end;
|
|
|
-
|
|
|
-procedure TCustomHttpConnection.StreamToSendCompleted(Sender: TObject);
|
|
|
-begin
|
|
|
- if Assigned(FOnStreamSent) then
|
|
|
- FOnStreamSent(Self);
|
|
|
- //WriteLn('TCustomHttpConnection.StreamToSendCompleted');
|
|
|
- SendBuffer.Free;
|
|
|
- SendBuffer := nil;
|
|
|
-end;
|
|
|
-
|
|
|
-procedure TCustomHttpConnection.ReceivedHeaderCompleted(Sender: TObject);
|
|
|
-var
|
|
|
- BytesInBuffer: Integer;
|
|
|
-begin
|
|
|
- //WriteLn('TCustomHttpConnection.ReceivedHeaderCompleted');
|
|
|
- BytesInBuffer := ReceivedHeader.Reader.BytesInBuffer;
|
|
|
- //WriteLn('BytesInBuffer: ', BytesInBuffer, ', Content length: ', ReceivedHeader.ContentLength);
|
|
|
- if Assigned(FOnHeaderReceived) then
|
|
|
- FOnHeaderReceived(Self);
|
|
|
- RecvSize := ReceivedHeader.ContentLength;
|
|
|
- if Assigned(ReceivedStream) then
|
|
|
- begin
|
|
|
- if BytesInBuffer > 0 then
|
|
|
- begin
|
|
|
- ReceivedStream.Write(ReceivedHeader.Reader.Buffer^, BytesInBuffer);
|
|
|
- if RecvSize > 0 then
|
|
|
- Dec(RecvSize, BytesInBuffer);
|
|
|
- if BytesInBuffer = ReceivedHeader.ContentLength then
|
|
|
- begin
|
|
|
- ReceivedStreamCompleted(nil);
|
|
|
- exit;
|
|
|
- end;
|
|
|
- end;
|
|
|
- FManager.SetReadHandler(FSocket.Handle, @DataAvailable, nil);
|
|
|
- end else
|
|
|
- ReceivedStreamCompleted(nil);
|
|
|
-end;
|
|
|
-
|
|
|
-procedure TCustomHttpConnection.DataAvailable(Sender: TObject);
|
|
|
-var
|
|
|
- FirstRun: Boolean;
|
|
|
- ReadNow, BytesRead: Integer;
|
|
|
- buf: array[0..1023] of Byte;
|
|
|
-begin
|
|
|
- FirstRun := True;
|
|
|
- while True do
|
|
|
- begin
|
|
|
- if RecvSize >= 0 then
|
|
|
- begin
|
|
|
- ReadNow := RecvSize;
|
|
|
- if ReadNow > 1024 then
|
|
|
- ReadNow := 1024;
|
|
|
- end else
|
|
|
- ReadNow := 1024;
|
|
|
- BytesRead := FSocket.Read(buf, ReadNow);
|
|
|
- //WriteLn('TCustomHttpConnection.DataAvailable: Read ', BytesRead, ' bytes; RecvSize=', RecvSize);
|
|
|
- if BytesRead <= 0 then
|
|
|
- begin
|
|
|
- if FirstRun then
|
|
|
- ReceivedStreamCompleted(nil);
|
|
|
- break;
|
|
|
- end;
|
|
|
- FirstRun := False;
|
|
|
- ReceivedStream.Write(buf, BytesRead);
|
|
|
- if RecvSize > 0 then
|
|
|
- Dec(RecvSize, BytesRead);
|
|
|
- if RecvSize = 0 then
|
|
|
- begin
|
|
|
- ReceivedStreamCompleted(nil);
|
|
|
- break;
|
|
|
- end;
|
|
|
- end;
|
|
|
-end;
|
|
|
-
|
|
|
-procedure TCustomHttpConnection.ReceivedStreamCompleted(Sender: TObject);
|
|
|
-begin
|
|
|
- //WriteLn('TCustomHttpConnection.ReceivedStreamCompleted');
|
|
|
- if Assigned(FOnStreamReceived) then
|
|
|
- FOnStreamReceived(Self);
|
|
|
- FManager.ClearReadHandler(FSocket.Handle);
|
|
|
-end;
|
|
|
-
|
|
|
-constructor TCustomHttpConnection.Create(AManager: TAsyncIOManager; ASocket: TInetSocket);
|
|
|
-begin
|
|
|
- inherited Create;
|
|
|
- FManager := AManager;
|
|
|
- FSocket := ASocket;
|
|
|
-end;
|
|
|
-
|
|
|
-destructor TCustomHttpConnection.Destroy;
|
|
|
-begin
|
|
|
- FManager.ClearReadHandler(FSocket.Handle);
|
|
|
- inherited Destroy;
|
|
|
-end;
|
|
|
-
|
|
|
-procedure TCustomHttpConnection.Start;
|
|
|
-begin
|
|
|
- // Start receiver
|
|
|
- if Assigned(ReceivedHeader) then begin
|
|
|
- ReceivedHeader.OnCompleted := @ReceivedHeaderCompleted;
|
|
|
- ReceivedHeader.AsyncReceive(FManager, FSocket);
|
|
|
- end;
|
|
|
-
|
|
|
- // Start sender
|
|
|
- if Assigned(HeaderToSend) then begin
|
|
|
- // Set the 'Content-Length' field automatically, if possible
|
|
|
- if (HeaderToSend.ContentLength = -1) and Assigned(StreamToSend) then
|
|
|
- HeaderToSend.ContentLength := StreamToSend.Size;
|
|
|
-
|
|
|
- HeaderToSend.OnCompleted := @HeaderToSendCompleted;
|
|
|
- HeaderToSend.AsyncSend(FManager, FSocket)
|
|
|
- end;
|
|
|
-end;
|
|
|
-
|
|
|
-
|
|
|
-end.
|
|
|
-
|
|
|
-
|
|
|
-{
|
|
|
- $Log$
|
|
|
- Revision 1.2 2000-07-13 11:32:59 michael
|
|
|
- + removed logs
|
|
|
-
|
|
|
-}
|
sg