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PHTTPServer Class Reference

A TCP/IP socket for the HyperText Transfer Protocol version 1.0. More...

#include <http.h>

Inheritance diagram for PHTTPServer:
Collaboration diagram for PHTTPServer:

Public Types

typedef PNotifierTemplate
< PHTTPConnectionInfo
WebSocketNotifier
 
- Public Types inherited from PHTTP
enum  Commands {
  GET, HEAD, POST, PUT,
  DELETE, TRACE, OPTIONS, CONNECT,
  NumCommands
}
 
enum  StatusCode {
  BadResponse = 1, ContentProcessorError, UnknownTransferEncoding, TransportConnectError,
  TransportWriteError, TransportReadError, Continue = 100, SwitchingProtocols,
  RequestOK = 200, Created, Accepted, NonAuthoritativeInformation,
  NoContent, ResetContent, PartialContent, MultipleChoices = 300,
  MovedPermanently, MovedTemporarily, SeeOther, NotModified,
  UseProxy, BadRequest = 400, UnAuthorised, PaymentRequired,
  Forbidden, NotFound, MethodNotAllowed, NoneAcceptable,
  ProxyAuthenticationRequired, RequestTimeout, Conflict, Gone,
  LengthRequired, UnlessTrue, InternalServerError = 500, NotImplemented,
  BadGateway, ServiceUnavailable, GatewayTimeout
}
 
- Public Types inherited from PChannel
enum  PXBlockType { PXReadBlock, PXWriteBlock, PXAcceptBlock, PXConnectBlock }
 
enum  Errors {
  NoError, NotFound, FileExists, DiskFull,
  AccessDenied, DeviceInUse, BadParameter, NoMemory,
  NotOpen, Timeout, Interrupted, BufferTooSmall,
  Miscellaneous, ProtocolFailure, Unavailable, NumNormalisedErrors
}
 Normalised error codes. More...
 
enum  ErrorGroup { LastReadError, LastWriteError, LastGeneralError, NumErrorGroups }
 Error groups. More...
 
typedef PNotifierTemplate
< PChannel::AsyncContext & > 
AsyncNotifier
 
enum  ShutdownValue { ShutdownRead = 0, ShutdownWrite = 1, ShutdownReadAndWrite = 2 }
 
- Public Types inherited from PObject
enum  Comparison { LessThan = -1, EqualTo = 0, GreaterThan = 1 }
 Result of the comparison operation performed by the Compare() function. More...
 

Public Member Functions

 PHTTPServer ()
 Create a TCP/IP HTTP protocol socket channel. More...
 
 PHTTPServer (const PHTTPSpace &urlSpace)
 
virtual PString GetServerName () const
 Get the name of the server. More...
 
PHTTPSpaceGetURLSpace ()
 Get the name space being used by the HTTP server socket. More...
 
void SetURLSpace (const PHTTPSpace &space)
 Use a new URL name space for this HTTP socket. More...
 
virtual PBoolean ProcessCommand ()
 Process commands, dispatching to the appropriate virtual function. More...
 
virtual bool OnGET (const PHTTPConnectionInfo &conInfo)
 Handle a GET command from a client. More...
 
virtual bool OnHEAD (const PHTTPConnectionInfo &conInfo)
 Handle a HEAD command from a client. More...
 
virtual bool OnPOST (const PHTTPConnectionInfo &conInfo)
 Handle a POST command from a client. More...
 
virtual PBoolean OnProxy (const PHTTPConnectionInfo &conInfo)
 Handle a proxy command request from a client. More...
 
virtual PString ReadEntityBody ()
 Read the entity body associated with a HTTP request, and close the socket if not a persistent connection. More...
 
virtual PBoolean OnUnknown (const PCaselessString &command, const PHTTPConnectionInfo &connectInfo)
 Handle an unknown command. More...
 
bool StartResponse (StatusCode code, PMIMEInfo &headers, long bodySize)
 Write a command reply back to the client, and construct some of the outgoing MIME fields. More...
 
bool SendResponse (StatusCode code, const PString &body=PString::Empty())
 Send a response to client. More...
 
bool SendResponse (StatusCode code, PMIMEInfo &headers, const PString &body=PString::Empty())
 
virtual PBoolean OnError (StatusCode code, const PCaselessString &extra, const PHTTPConnectionInfo &connectInfo)
 Write an error response for the specified code. More...
 
void SetDefaultMIMEInfo (PMIMEInfo &info, const PHTTPConnectionInfo &connectInfo) const
 Set the default mime info. More...
 
PHTTPConnectionInfoGetConnectionInfo ()
 Get the connection info for this connection. More...
 
virtual bool OnCommand (PINDEX cmd, const PURL &url, const PString &args, PHTTPConnectionInfo &connectInfo)
 Called when a request is received. More...
 
virtual bool OnWebSocket (PHTTPConnectionInfo &connectInfo)
 Called when a request indicates a swtch to WebSocket protocol. More...
 
void SetWebSocketNotifier (const PString &protocol, const WebSocketNotifier &notifier)
 Set the handler for WebSocket sub-protocol. More...
 
void ClearWebSocketNotifier (const PString &protocol)
 Remove a WebSocket notifier. More...
 
void SetServiceStartTime (const PTime &startTime)
 Set start of service time. More...
 
const PTimeGetServiceStartTime () const
 Get start of service time. More...
 
const PTimeGetLastCommandTime () const
 Get time last command was read. More...
 
- Public Member Functions inherited from PInternetProtocol
virtual PBoolean Read (void *buf, PINDEX len)
 Low level read from the channel. More...
 
virtual int ReadChar ()
 Read a single 8 bit byte from the channel. More...
 
virtual PBoolean Write (const void *buf, PINDEX len)
 Low level write to the channel. More...
 
void SetReadLineTimeout (const PTimeInterval &t)
 Set the maximum timeout between characters within a line. More...
 
virtual PBoolean Connect (const PString &address, WORD port=0)
 Connect a socket to a remote host for the internet protocol. More...
 
virtual PBoolean Connect (const PString &address, const PString &service)
 
virtual PBoolean Accept (PSocket &listener)
 Accept a server socket to a remote host for the internet protocol. More...
 
const PStringGetDefaultService () const
 Get the default service name or port number to use in socket connections. More...
 
PIPSocketGetSocket () const
 Get the eventual socket for the series of indirect channels that may be between the current protocol and the actual I/O channel. More...
 
virtual PBoolean WriteLine (const PString &line)
 Write a string to the socket channel followed by a CR/LF pair. More...
 
virtual PBoolean ReadLine (PString &line, PBoolean allowContinuation=false)
 Read a string from the socket channel up to a CR/LF pair. More...
 
virtual void UnRead (int ch)
 Put back the characters into the data stream so that the next Read() function call will return them first. More...
 
virtual void UnRead (const PString &str)
 
virtual void UnRead (const void *buffer, PINDEX len)
 
virtual bool WriteCommand (PINDEX cmdNumber, const PString &param=PString::Empty())
 Write a single line for a command. More...
 
virtual bool WriteCommand (PINDEX cmdNumber, const PString &param, const PMIMEInfo &mime)
 
virtual PBoolean ReadCommand (PINDEX &num, PString &args)
 Read a single line of a command which ends with a CR/LF pair. More...
 
virtual PBoolean ReadCommand (PINDEX &num, PString &args, PMIMEInfo &mime)
 
virtual PBoolean WriteResponse (unsigned numericCode, const PString &info)
 Write a response code followed by a text string describing the response to a command. More...
 
virtual PBoolean WriteResponse (const PString &code, const PString &info)
 
virtual PBoolean ReadResponse ()
 Read a response code followed by a text string describing the response to a command. More...
 
virtual PBoolean ReadResponse (int &code, PString &info)
 
virtual PBoolean ReadResponse (int &code, PString &info, PMIMEInfo &mime)
 
virtual int ExecuteCommand (PINDEX cmdNumber)
 Write a command to the socket, using WriteCommand() and await a response using ReadResponse(). More...
 
virtual int ExecuteCommand (PINDEX cmdNumber, const PString &param)
 
int GetLastResponseCode () const
 Return the code associated with the last response received by the socket. More...
 
PString GetLastResponseInfo () const
 Return the last response received by the socket. More...
 
- Public Member Functions inherited from PIndirectChannel
 PIndirectChannel ()
 Create a new indirect channel without any channels to redirect to. More...
 
 ~PIndirectChannel ()
 Close the indirect channel, deleting read/write channels if desired. More...
 
Comparison Compare (const PObject &obj) const
 Determine if the two objects refer to the same indirect channel. More...
 
virtual PString GetName () const
 Get the name of the channel. More...
 
virtual P_INT_PTR GetHandle () const
 Get the OS specific handle for the PSoundChannel. More...
 
virtual PBoolean Close ()
 Close the channel. More...
 
virtual PBoolean IsOpen () const
 Determine if the channel is currently open and read and write operations can be executed on it. More...
 
virtual PBoolean Shutdown (ShutdownValue option)
 Close one or both of the data streams associated with a channel. More...
 
virtual bool SetLocalEcho (bool localEcho)
 Set local echo mode. More...
 
virtual PChannelGetBaseReadChannel () const
 This function returns the eventual base channel for reading of a series of indirect channels provided by descendents of PIndirectChannel. More...
 
virtual PChannelGetBaseWriteChannel () const
 This function returns the eventual base channel for writing of a series of indirect channels provided by descendents of PIndirectChannel. More...
 
virtual bool CloseBaseReadChannel ()
 Close the base channel of channel indirection using PIndirectChannel. More...
 
virtual bool CloseBaseWriteChannel ()
 Close the base channel of channel indirection using PIndirectChannel. More...
 
virtual PString GetErrorText (ErrorGroup group=NumErrorGroups) const
 Get error message description. More...
 
PBoolean Open (PChannel &channel)
 Set the channel for both read and write operations. More...
 
PBoolean Open (PChannel *channel, PBoolean autoDelete=true)
 Set the channel for both read and write operations. More...
 
PBoolean Open (PChannel *readChannel, PChannel *writeChannel, PBoolean autoDeleteRead=true, PBoolean autoDeleteWrite=true)
 Set the channel for both read and write operations. More...
 
PChannelDetach (ShutdownValue option=ShutdownReadAndWrite)
 Detach without closing the read/write channel. More...
 
PChannelGetReadChannel () const
 Get the channel used for read operations. More...
 
bool SetReadChannel (PChannel *channel, bool autoDelete=true, bool closeExisting=false)
 Set the channel for read operations. More...
 
PChannelGetWriteChannel () const
 Get the channel used for write operations. More...
 
PBoolean SetWriteChannel (PChannel *channel, bool autoDelete=true, bool closeExisting=false)
 Set the channel for read operations. More...
 
template<class ChannelClass >
ChannelClass * FindChannel ()
 Locate a channel of a specific class in the indirect chain. More...
 
- Public Member Functions inherited from PChannel
PBoolean SetErrorValues (Errors errorCode, int osError, ErrorGroup group=LastGeneralError)
 Set error values to those specified. More...
 
virtual PINDEX HashFunction () const
 Calculate a hash value for use in sets and dictionaries. More...
 
FILE * FDOpen (const char *mode)
 Re-open the device using the stdio library. More...
 
void SetReadTimeout (const PTimeInterval &time)
 Set the timeout for read operations. More...
 
PTimeInterval GetReadTimeout () const
 Get the timeout for read operations. More...
 
virtual PINDEX GetLastReadCount () const
 Get the number of bytes read by the last Read() call. More...
 
virtual PINDEX SetLastReadCount (PINDEX count)
 
PBoolean ReadBlock (void *buf, PINDEX len)
 Read len bytes into the buffer from the channel. More...
 
PString ReadString (PINDEX len)
 Read len character into a string from the channel. More...
 
void SetWriteTimeout (const PTimeInterval &time)
 Set the timeout for write operations to complete. More...
 
PTimeInterval GetWriteTimeout () const
 Get the timeout for write operations to complete. More...
 
virtual PBoolean Write (const void *buf, PINDEX len, const void *)
 Low level write to the channel with marker. More...
 
virtual PINDEX GetLastWriteCount () const
 Get the number of bytes written by the last Write() call. More...
 
virtual PINDEX SetLastWriteCount (PINDEX count)
 
PBoolean WriteChar (int c)
 Write a single character to the channel. More...
 
PBoolean WriteString (const PString &str)
 Write a string to the channel. More...
 
 ~PChannel ()
 Close down the channel. More...
 
Errors GetErrorCode (ErrorGroup group=NumErrorGroups) const
 Get normalised error code. More...
 
int GetErrorNumber (ErrorGroup group=NumErrorGroups) const
 Get OS errro code. More...
 
virtual bool ReadAsync (AsyncContext &context)
 Begin an asynchronous read from channel. More...
 
virtual void OnReadComplete (AsyncContext &context)
 User callback function for when a ReadAsync() call has completed or timed out. More...
 
virtual bool WriteAsync (AsyncContext &context)
 Begin an asynchronous write from channel. More...
 
virtual void OnWriteComplete (AsyncContext &context)
 User callback function for when a WriteAsync() call has completed or timed out. More...
 
virtual bool FlowControl (const void *flowData)
 Flow Control information Pass data to the channel for flowControl determination. More...
 
PBoolean SetBufferSize (PINDEX newSize)
 Set the iostream buffer size for reads and writes. More...
 
PBoolean SendCommandString (const PString &command)
 Send a command meta-string. More...
 
void AbortCommandString ()
 Abort a command string that is in progress. More...
 
- Public Member Functions inherited from PObject
__inline unsigned GetTraceContextIdentifier () const
 Get PTRACE context identifier. More...
 
__inline void SetTraceContextIdentifier (unsigned id)
 
__inline void SetTraceContextIdentifier (const PObject &obj)
 
__inline void SetTraceContextIdentifier (const PObject *obj)
 
__inline void CopyTraceContextIdentifier (PObject &obj) const
 
__inline void CopyTraceContextIdentifier (PObject *obj) const
 
virtual ~PObject ()
 
__inline const char * GetClass () const
 
__inline bool IsClass (const char *name) const
 
__inline const PObjectPTraceObjectInstance () const
 
virtual PObjectClone () const
 Create a copy of the class on the heap. More...
 
template<class CLS >
CLS * CloneAs () const
 As for Clone() but converts to specified type. More...
 
virtual Comparison CompareObjectMemoryDirect (const PObject &obj) const
 Determine the byte wise comparison of two objects. More...
 
bool operator== (const PObject &obj) const
 Compare the two objects. More...
 
bool operator!= (const PObject &obj) const
 Compare the two objects. More...
 
bool operator< (const PObject &obj) const
 Compare the two objects. More...
 
bool operator> (const PObject &obj) const
 Compare the two objects. More...
 
bool operator<= (const PObject &obj) const
 Compare the two objects. More...
 
bool operator>= (const PObject &obj) const
 Compare the two objects. More...
 
virtual void PrintOn (ostream &strm) const
 Output the contents of the object to the stream. More...
 
virtual void ReadFrom (istream &strm)
 Input the contents of the object from the stream. More...
 

Protected Types

typedef std::map< std::string,
WebSocketNotifier
WebSocketNotifierMap
 
- Protected Types inherited from PInternetProtocol
enum  StuffState {
  DontStuff, StuffIdle, StuffCR, StuffCRLF,
  StuffCRLFdot, StuffCRLFdotCR
}
 

Protected Member Functions

void Construct ()
 
 P_REMOVE_VIRTUAL (PBoolean, OnGET(const PURL &, const PMIMEInfo &, const PHTTPConnectionInfo &), false)
 
 P_REMOVE_VIRTUAL (PBoolean, OnHEAD(const PURL &, const PMIMEInfo &, const PHTTPConnectionInfo &), false)
 
 P_REMOVE_VIRTUAL (PBoolean, OnPOST(const PURL &, const PMIMEInfo &, const PStringToString &, const PHTTPConnectionInfo &), false)
 
- Protected Member Functions inherited from PHTTP
 PHTTP ()
 Create a TCP/IP HTTP protocol channel. More...
 
 PHTTP (const char *defaultServiceName)
 
virtual PINDEX ParseResponse (const PString &line)
 Parse a response line string into a response code and any extra info on the line. More...
 
- Protected Member Functions inherited from PInternetProtocol
 PInternetProtocol (const char *defaultServiceName, PINDEX cmdCount, char const *const *cmdNames)
 
bool SetLastResponse (int code, const PString &info, ErrorGroup group=LastGeneralError)
 
- Protected Member Functions inherited from PIndirectChannel
virtual PBoolean OnOpen ()
 This callback is executed when the Open() function is called with open channels. More...
 
 PDECLARE_READ_WRITE_MUTEX (channelPointerMutex)
 Race condition prevention on closing channel. More...
 
- Protected Member Functions inherited from PChannel
 PChannel (const PChannel &)
 
PChanneloperator= (const PChannel &)
 
virtual PBoolean ConvertOSError (P_INT_PTR libcReturnValue, ErrorGroup group=LastGeneralError)
 Convert an operating system error into platform independent error. More...
 
int ReadCharWithTimeout (PTimeInterval &timeout)
 Read a character with specified timeout. More...
 
PBoolean ReceiveCommandString (int nextChar, const PString &reply, PINDEX &pos, PINDEX start)
 
bool CheckNotOpen ()
 
virtual int os_errno () const
 
PBoolean PXSetIOBlock (PXBlockType type, const PTimeInterval &timeout)
 
P_INT_PTR GetOSHandleAsInt () const
 
int PXClose ()
 
 PDECLARE_MUTEX (px_threadMutex)
 
 PDECLARE_MUTEX (px_writeMutex)
 
 PChannel ()
 Create the channel. More...
 
- Protected Member Functions inherited from PObject
 PObject ()
 Constructor for PObject, made protected so cannot ever create one on its own. More...
 

Protected Attributes

PTime m_serviceStartTime
 
PTime m_lastCommandTime
 
PHTTPSpace m_urlSpace
 
PHTTPConnectionInfo m_connectInfo
 
unsigned m_transactionCount
 
PTimeInterval m_nextTimeout
 
WebSocketNotifierMap m_webSocketNotifiers
 
- Protected Attributes inherited from PInternetProtocol
PString defaultServiceName
 
PStringArray commandNames
 
PCharArray unReadBuffer
 
PINDEX unReadCount
 
PTimeInterval readLineTimeout
 
enum PInternetProtocol::StuffState stuffingState
 
PBoolean newLineToCRLF
 
int m_lastResponseCode
 
PString m_lastResponseInfo
 
- Protected Attributes inherited from PIndirectChannel
PChannelreadChannel
 Channel for read operations. More...
 
PBoolean readAutoDelete
 Automatically delete read channel on destruction. More...
 
PChannelwriteChannel
 Channel for write operations. More...
 
PBoolean writeAutoDelete
 Automatically delete write channel on destruction. More...
 
- Protected Attributes inherited from PChannel
PTimeInterval readTimeout
 Timeout for read operations. More...
 
PTimeInterval writeTimeout
 Timeout for write operations. More...
 
atomic< P_INT_PTRos_handle
 The operating system file handle return by standard open() function. More...
 
PThreadLocalStorage< Statusm_status [NumErrorGroups+1]
 
PXBlockType px_lastBlockType
 
PThreadpx_readThread
 
PThreadpx_writeThread
 
PThreadpx_selectThread [3]
 
PCriticalSection px_selectMutex [3]
 
- Protected Attributes inherited from PObject
unsigned m_traceContextIdentifier
 

Additional Inherited Members

- Static Public Member Functions inherited from PHTTP
static const PCaselessStringHostTag ()
 
static const PCaselessStringAllowTag ()
 
static const PCaselessStringAuthorizationTag ()
 
static const PCaselessStringContentEncodingTag ()
 
static const PCaselessStringContentLengthTag ()
 
static const PCaselessStringContentTypeTag ()
 
static const PCaselessStringDateTag ()
 
static const PCaselessStringExpiresTag ()
 
static const PCaselessStringFromTag ()
 
static const PCaselessStringIfModifiedSinceTag ()
 
static const PCaselessStringLastModifiedTag ()
 
static const PCaselessStringLocationTag ()
 
static const PCaselessStringPragmaTag ()
 
static const PCaselessStringPragmaNoCacheTag ()
 
static const PCaselessStringRefererTag ()
 
static const PCaselessStringServerTag ()
 
static const PCaselessStringUserAgentTag ()
 
static const PCaselessStringWWWAuthenticateTag ()
 
static const PCaselessStringMIMEVersionTag ()
 
static const PCaselessStringConnectionTag ()
 
static const PCaselessStringKeepAliveTag ()
 
static const PCaselessStringUpgradeTag ()
 
static const PCaselessStringWebSocketTag ()
 
static const PCaselessStringWebSocketKeyTag ()
 
static const PCaselessStringWebSocketAcceptTag ()
 
static const PCaselessStringWebSocketProtocolTag ()
 
static const PCaselessStringWebSocketVersionTag ()
 
static const PCaselessStringTransferEncodingTag ()
 
static const PCaselessStringChunkedTag ()
 
static const PCaselessStringProxyConnectionTag ()
 
static const PCaselessStringProxyAuthorizationTag ()
 
static const PCaselessStringProxyAuthenticateTag ()
 
static const PCaselessStringForwardedTag ()
 
static const PCaselessStringSetCookieTag ()
 
static const PCaselessStringCookieTag ()
 
static const PCaselessStringFormUrlEncoded ()
 
- Static Public Member Functions inherited from PChannel
static PString GetErrorText (Errors lastError, int osError=0)
 Get error message description. More...
 
- Static Public Member Functions inherited from PObject
static __inline void CopyTraceContextIdentifier (PObject &to, const PObject &from)
 
static __inline void CopyTraceContextIdentifier (PObject &to, const PObject *from)
 
static __inline void CopyTraceContextIdentifier (PObject *to, const PObject &from)
 
static __inline void CopyTraceContextIdentifier (PObject *to, const PObject *from)
 
static __inline const char * Class ()
 
static __inline const PObjectPTraceObjectInstance (const char *)
 
static __inline const PObjectPTraceObjectInstance (const PObject *obj)
 
template<typename T >
static Comparison Compare2 (T v1, T v2)
 Compare two types, returning Comparison type. More...
 
static Comparison InternalCompareObjectMemoryDirect (const PObject *obj1, const PObject *obj2, PINDEX size)
 Internal function caled from CompareObjectMemoryDirect() More...
 

Detailed Description

A TCP/IP socket for the HyperText Transfer Protocol version 1.0.

The server socket thread would continuously call the ProcessCommand() function until it returns false. This will then call the appropriate virtual function on parsing the HTTP protocol.


PTCPSocket socket(80);
if (!socket.Listen())
  return;
PHTTPSpace httpNameSpace;
httpNameSpace.AddResource(new PHTTPDirectory("data", "data"))
PHTTServer httpServer(httpNameSpace);
if (!httpServer.Open(socket))
  return;
while (httpServer.ProcessCommand())
  ;

Member Typedef Documentation

typedef std::map<std::string, WebSocketNotifier> PHTTPServer::WebSocketNotifierMap
protected

Constructor & Destructor Documentation

PHTTPServer::PHTTPServer ( )

Create a TCP/IP HTTP protocol socket channel.

The form with the single port parameter creates an unopened socket, the form with the address parameter makes a connection to a remote system, opening the socket. The form with the socket parameter opens the socket to an incoming call from a "listening" socket.

PHTTPServer::PHTTPServer ( const PHTTPSpace urlSpace)
Parameters
urlSpaceName space to use for URLs received.

Member Function Documentation

void PHTTPServer::ClearWebSocketNotifier ( const PString protocol)

Remove a WebSocket notifier.

void PHTTPServer::Construct ( )
protected
PHTTPConnectionInfo& PHTTPServer::GetConnectionInfo ( )
inline

Get the connection info for this connection.

References m_connectInfo.

const PTime& PHTTPServer::GetLastCommandTime ( ) const
inline

Get time last command was read.

References m_lastCommandTime.

virtual PString PHTTPServer::GetServerName ( ) const
virtual

Get the name of the server.

Returns
String name of the server.
const PTime& PHTTPServer::GetServiceStartTime ( ) const
inline

Get start of service time.

References m_serviceStartTime.

PHTTPSpace& PHTTPServer::GetURLSpace ( )
inline

Get the name space being used by the HTTP server socket.

Returns
URL name space tree.

References m_urlSpace.

virtual bool PHTTPServer::OnCommand ( PINDEX  cmd,
const PURL url,
const PString args,
PHTTPConnectionInfo connectInfo 
)
virtual

Called when a request is received.

By default, this intercepts the GET, HEAD and POST commands and calls OnGET, OnHEAD and OnPOST. For all other command, OnUnknown is called

virtual PBoolean PHTTPServer::OnError ( StatusCode  code,
const PCaselessString extra,
const PHTTPConnectionInfo connectInfo 
)
virtual

Write an error response for the specified code.

Depending on the code parameter this function will also send a HTML version of the status code for display on the remote client viewer.

Returns
true if the connection may persist, false if the connection must close
Parameters
codeStatus code for the error response.
extraExtra information included in the response.
connectInfoHTTP connection information
virtual bool PHTTPServer::OnGET ( const PHTTPConnectionInfo conInfo)
virtual

Handle a GET command from a client.

The default implementation looks up the URL in the name space declared by the PHTTPSpace class tree and despatches to the PHTTPResource object contained therein.

Returns
true if the connection may persist, false if the connection must close If there is no ContentLength field in the response, this value must be false for correct operation.
Parameters
conInfoHTTP connection information
virtual bool PHTTPServer::OnHEAD ( const PHTTPConnectionInfo conInfo)
virtual

Handle a HEAD command from a client.

The default implemetation looks up the URL in the name space declared by the PHTTPSpace class tree and despatches to the PHTTPResource object contained therein.

Returns
true if the connection may persist, false if the connection must close If there is no ContentLength field in the response, this value must be false for correct operation.
Parameters
conInfoHTTP connection information
virtual bool PHTTPServer::OnPOST ( const PHTTPConnectionInfo conInfo)
virtual

Handle a POST command from a client.

The default implementation looks up the URL in the name space declared by the PHTTPSpace class tree and despatches to the PHTTPResource object contained therein.

Returns
true if the connection may persist, false if the connection must close If there is no ContentLength field in the response, this value must be false for correct operation.
Parameters
conInfoHTTP connection information
virtual PBoolean PHTTPServer::OnProxy ( const PHTTPConnectionInfo conInfo)
virtual

Handle a proxy command request from a client.

This will only get called if the request was not for this particular server. If it was a proxy request for this server (host and port number) then the appropriate OnGET(), OnHEAD() or OnPOST() command is called.

The default implementation returns OnError(BadGateway).

Returns
true if the connection may persist, false if the connection must close If there is no ContentLength field in the response, this value must be false for correct operation.
Parameters
conInfoHTTP connection information
virtual PBoolean PHTTPServer::OnUnknown ( const PCaselessString command,
const PHTTPConnectionInfo connectInfo 
)
virtual

Handle an unknown command.

Returns
true if the connection may persist, false if the connection must close
Parameters
commandComplete command line received.
connectInfoHTTP connection information
virtual bool PHTTPServer::OnWebSocket ( PHTTPConnectionInfo connectInfo)
virtual

Called when a request indicates a swtch to WebSocket protocol.

This will complete the WebSocket handshake if m_webSocketNotifiers contains and entry for an offered protocol. If none, a 404 is returned and the socket remains in HTTP mode.

After the start up handshake has completed, if there is a notifier and it is non-null, then the notifier is called. The notifier, may then call connectInfo.ClearWebSocket() if it wishes to return to HTTP mode. That is, ProcessCommand() will return true and the normal persistence rules apply. If ClearWebSocket() is not called then ProcessCommand() will return false.

Note, that the latter case does not mean that the underlying socket is necessarily closed, it could subsequently be disconnected from the PHTTPServer objects and passed to PWebSocket for processing.

Returns
true if want to persist with HTTP connection.
PHTTPServer::P_REMOVE_VIRTUAL ( PBoolean  ,
OnGET(const PURL &, const PMIMEInfo &, const PHTTPConnectionInfo &)  ,
false   
)
protected
PHTTPServer::P_REMOVE_VIRTUAL ( PBoolean  ,
OnHEAD(const PURL &, const PMIMEInfo &, const PHTTPConnectionInfo &)  ,
false   
)
protected
PHTTPServer::P_REMOVE_VIRTUAL ( PBoolean  ,
OnPOST(const PURL &, const PMIMEInfo &, const PStringToString &, const PHTTPConnectionInfo &)  ,
false   
)
protected
virtual PBoolean PHTTPServer::ProcessCommand ( )
virtual

Process commands, dispatching to the appropriate virtual function.

This is used when the socket is acting as a server.

Returns
true if the request specified persistent mode and the request version allows it, false if the socket closed, timed out, the protocol does not allow persistent mode, or the client did not request it timed out
virtual PString PHTTPServer::ReadEntityBody ( )
virtual

Read the entity body associated with a HTTP request, and close the socket if not a persistent connection.

Returns
The entity body of the command
bool PHTTPServer::SendResponse ( StatusCode  code,
const PString body = PString::Empty() 
)

Send a response to client.

Returns
true if write successful.
Parameters
codeStatus code for the response.
bodyBody to send in response
bool PHTTPServer::SendResponse ( StatusCode  code,
PMIMEInfo headers,
const PString body = PString::Empty() 
)
Parameters
codeStatus code for the response.
headersMIME variables included in response.
bodyBody to send in response
void PHTTPServer::SetDefaultMIMEInfo ( PMIMEInfo info,
const PHTTPConnectionInfo connectInfo 
) const

Set the default mime info.

Parameters
infoExtra MIME information in command.
connectInfoConnection information
void PHTTPServer::SetServiceStartTime ( const PTime startTime)
inline

Set start of service time.

References m_serviceStartTime.

void PHTTPServer::SetURLSpace ( const PHTTPSpace space)

Use a new URL name space for this HTTP socket.

Parameters
spaceNew URL name space to use.
void PHTTPServer::SetWebSocketNotifier ( const PString protocol,
const WebSocketNotifier notifier 
)

Set the handler for WebSocket sub-protocol.

A NULL notifier may be set which indiates that the protocol is supported, but that ProcessCommand() is to simply return false as the caller will handle the channel from then on.

bool PHTTPServer::StartResponse ( StatusCode  code,
PMIMEInfo headers,
long  bodySize 
)

Write a command reply back to the client, and construct some of the outgoing MIME fields.

The MIME fields are not sent.

The bodySize parameter determines the size of the entity body associated with the response. If bodySize is >= 0, then a ContentLength field will be added to the outgoing MIME headers if one does not already exist.

If bodySize is < 0, then it is assumed that the size of the entity body is unknown, or has already been added, and no ContentLength field will be constructed.

If the version of the request is less than 1.0, then this function does nothing.

Returns
true if requires v1.1 chunked transfer encoding.
Parameters
codeStatus code for the response.
headersMIME variables included in response.
bodySizeSize of the rest of the response.

Member Data Documentation

PHTTPConnectionInfo PHTTPServer::m_connectInfo
protected

Referenced by GetConnectionInfo().

PTime PHTTPServer::m_lastCommandTime
protected

Referenced by GetLastCommandTime().

PTimeInterval PHTTPServer::m_nextTimeout
protected
PTime PHTTPServer::m_serviceStartTime
protected
unsigned PHTTPServer::m_transactionCount
protected
PHTTPSpace PHTTPServer::m_urlSpace
protected

Referenced by GetURLSpace().

WebSocketNotifierMap PHTTPServer::m_webSocketNotifiers
protected

The documentation for this class was generated from the following file: