/* -------------------------------------------------------------------------
- * Project: GSocket (Generic Socket)
- * Name: gsocket.h
- * Author: Guilhem Lavaux
- * Guillermo Rodriguez Garcia <guille@iies.es> (maintainer)
- * Purpose: GSocket include file (system independent)
- * CVSID: $Id$
+ * Project: GSocket (Generic Socket)
+ * Name: gsocket.h
+ * Author: Guilhem Lavaux
+ * Guillermo Rodriguez Garcia <guille@iies.es>
+ * Copyright: (c) Guilhem Lavaux
+ * (c) 2007,2008 Vadim Zeitlin <vadim@wxwidgets.org>
+ * Licence: wxWindows Licence
+ * Purpose: GSocket include file (system independent)
+ * CVSID: $Id$
* -------------------------------------------------------------------------
*/
-#ifndef __GSOCKET_H
-#define __GSOCKET_H
+#ifndef _WX_GSOCKET_H_
+#define _WX_GSOCKET_H_
-#ifndef __GSOCKET_STANDALONE__
-#include "wx/setup.h"
-#include "wx/platform.h"
+#include "wx/defs.h"
-#include "wx/dlimpexp.h" // for WXDLLIMPEXP_NET
+#if wxUSE_SOCKETS
-#endif
-
-#if wxUSE_SOCKETS || defined(__GSOCKET_STANDALONE__)
+#include "wx/dlimpexp.h" /* for WXDLLIMPEXP_NET */
#include <stddef.h>
/*
- Including sys/types.h under cygwin results in the warnings about "fd_set
+ Including sys/types.h under Cygwin results in the warnings about "fd_set
having been defined in sys/types.h" when winsock.h is included later and
doesn't seem to be necessary anyhow. It's not needed under Mac neither.
*/
#include <stdlib.h>
#endif
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-typedef struct _GSocket GSocket;
-typedef struct _GAddress GAddress;
-
-typedef enum {
+enum GAddressType
+{
GSOCK_NOFAMILY = 0,
GSOCK_INET,
GSOCK_INET6,
GSOCK_UNIX
-} GAddressType;
+};
-typedef enum {
+enum GSocketStream
+{
GSOCK_STREAMED,
GSOCK_UNSTREAMED
-} GSocketStream;
+};
-typedef enum {
+enum GSocketError
+{
GSOCK_NOERROR = 0,
GSOCK_INVOP,
GSOCK_IOERR,
GSOCK_INVPORT,
GSOCK_WOULDBLOCK,
GSOCK_TIMEDOUT,
- GSOCK_MEMERR
-} GSocketError;
+ GSOCK_MEMERR,
+ GSOCK_OPTERR
+};
/* See below for an explanation on how events work.
*/
-typedef enum {
+enum GSocketEvent
+{
GSOCK_INPUT = 0,
GSOCK_OUTPUT = 1,
GSOCK_CONNECTION = 2,
GSOCK_LOST = 3,
GSOCK_MAX_EVENT = 4
-} GSocketEvent;
+};
-enum {
+enum
+{
GSOCK_INPUT_FLAG = 1 << GSOCK_INPUT,
GSOCK_OUTPUT_FLAG = 1 << GSOCK_OUTPUT,
GSOCK_CONNECTION_FLAG = 1 << GSOCK_CONNECTION,
typedef int GSocketEventFlags;
+struct GAddress;
+class GSocket;
+
typedef void (*GSocketCallback)(GSocket *socket, GSocketEvent event,
char *cdata);
-
-/* Functions tables for internal use by GSocket code: */
-
-#ifndef __WINDOWS__
-struct GSocketBaseFunctionsTable
+/*
+ Class providing hooks abstracting the differences between console and GUI
+ applications for socket code.
+
+ We also have different implementations of this class for different platforms
+ allowing us to keep more things in the common code but the main reason for
+ its existence is that we want the same socket code work differently
+ depending on whether it's used from a console or a GUI program. This is
+ achieved by implementing the virtual methods of this class differently in
+ the objects returned by wxConsoleAppTraits::GetSocketFunctionsTable() and
+ the same method in wxGUIAppTraits.
+ */
+class GSocketManager
{
- void (*Detected_Read)(GSocket *socket);
- void (*Detected_Write)(GSocket *socket);
-};
-#endif
+public:
+ // set the manager to use, we don't take ownership of it
+ //
+ // this should be called before GSocket_Init(), i.e. before the first
+ // wxSocket object is created, otherwise the manager returned by
+ // wxAppTraits::GetSocketManager() will be used
+ static void Set(GSocketManager *manager);
-struct GSocketGUIFunctionsTable
-{
- int (*GUI_Init)(void);
- void (*GUI_Cleanup)(void);
- int (*GUI_Init_Socket)(GSocket *socket);
- void (*GUI_Destroy_Socket)(GSocket *socket);
-#ifndef __WINDOWS__
- void (*Install_Callback)(GSocket *socket, GSocketEvent event);
- void (*Uninstall_Callback)(GSocket *socket, GSocketEvent event);
-#endif
- void (*Enable_Events)(GSocket *socket);
- void (*Disable_Events)(GSocket *socket);
-};
+ // return the manager to use
+ //
+ // this initializes the manager at first use
+ static GSocketManager *Get()
+ {
+ if ( !ms_manager )
+ Init();
+ return ms_manager;
+ }
-/* Global initializers */
+ // called before the first wxSocket is created and should do the
+ // initializations needed in order to use the network
+ //
+ // return true if initialized successfully
+ virtual bool OnInit() = 0;
-/* Sets GUI functions callbacks. Must be called *before* GSocket_Init
- if the app uses async sockets. */
-void GSocket_SetGUIFunctions(struct GSocketGUIFunctionsTable *guifunc);
+ // undo the initializations of OnInit()
+ virtual void OnExit() = 0;
-/* GSocket_Init() must be called at the beginning */
-int GSocket_Init(void);
-
-/* GSocket_Cleanup() must be called at the end */
-void GSocket_Cleanup(void);
+ // do manager-specific socket initializations (and undo it): this is called
+ // in the beginning/end of the socket initialization/destruction
+ virtual bool Init_Socket(GSocket *socket) = 0;
+ virtual void Destroy_Socket(GSocket *socket) = 0;
-/* Constructors / Destructors */
+ virtual void Install_Callback(GSocket *socket, GSocketEvent event) = 0;
+ virtual void Uninstall_Callback(GSocket *socket, GSocketEvent event) = 0;
-GSocket *GSocket_new(void);
-void GSocket_destroy(GSocket *socket);
+ virtual void Enable_Events(GSocket *socket) = 0;
+ virtual void Disable_Events(GSocket *socket) = 0;
+ virtual ~GSocketManager() { }
+private:
+ // get the manager to use if we don't have it yet
+ static void Init();
-/* GSocket_Shutdown:
- * Disallow further read/write operations on this socket, close
- * the fd and disable all callbacks.
- */
-void GSocket_Shutdown(GSocket *socket);
-
-/* Address handling */
-
-/* GSocket_SetLocal:
- * GSocket_GetLocal:
- * GSocket_SetPeer:
- * GSocket_GetPeer:
- * Set or get the local or peer address for this socket. The 'set'
- * functions return GSOCK_NOERROR on success, an error code otherwise.
- * The 'get' functions return a pointer to a GAddress object on success,
- * or NULL otherwise, in which case they set the error code of the
- * corresponding GSocket.
- *
- * Error codes:
- * GSOCK_INVSOCK - the socket is not valid.
- * GSOCK_INVADDR - the address is not valid.
- */
-GSocketError GSocket_SetLocal(GSocket *socket, GAddress *address);
-GSocketError GSocket_SetPeer(GSocket *socket, GAddress *address);
-GAddress *GSocket_GetLocal(GSocket *socket);
-GAddress *GSocket_GetPeer(GSocket *socket);
-
-/* Server specific parts */
-
-/* GSocket_SetServer:
- * Sets up this socket as a server. The local address must have been
- * set with GSocket_SetLocal() before GSocket_SetServer() is called.
- * Returns GSOCK_NOERROR on success, one of the following otherwise:
- *
- * Error codes:
- * GSOCK_INVSOCK - the socket is in use.
- * GSOCK_INVADDR - the local address has not been set.
- * GSOCK_IOERR - low-level error.
- */
-GSocketError GSocket_SetServer(GSocket *socket);
-
-/* GSocket_WaitConnection:
- * Waits for an incoming client connection. Returns a pointer to
- * a GSocket object, or NULL if there was an error, in which case
- * the last error field will be updated for the calling GSocket.
- *
- * Error codes (set in the calling GSocket)
- * GSOCK_INVSOCK - the socket is not valid or not a server.
- * GSOCK_TIMEDOUT - timeout, no incoming connections.
- * GSOCK_WOULDBLOCK - the call would block and the socket is nonblocking.
- * GSOCK_MEMERR - couldn't allocate memory.
- * GSOCK_IOERR - low-level error.
- */
-GSocket *GSocket_WaitConnection(GSocket *socket);
-
-
-/* Client specific parts */
-
-/* GSocket_Connect:
- * For stream (connection oriented) sockets, GSocket_Connect() tries
- * to establish a client connection to a server using the peer address
- * as established with GSocket_SetPeer(). Returns GSOCK_NOERROR if the
- * connection has been succesfully established, or one of the error
- * codes listed below. Note that for nonblocking sockets, a return
- * value of GSOCK_WOULDBLOCK doesn't mean a failure. The connection
- * request can be completed later; you should use GSocket_Select()
- * to poll for GSOCK_CONNECTION | GSOCK_LOST, or wait for the
- * corresponding asynchronous events.
- *
- * For datagram (non connection oriented) sockets, GSocket_Connect()
- * just sets the peer address established with GSocket_SetPeer() as
- * default destination.
- *
- * Error codes:
- * GSOCK_INVSOCK - the socket is in use or not valid.
- * GSOCK_INVADDR - the peer address has not been established.
- * GSOCK_TIMEDOUT - timeout, the connection failed.
- * GSOCK_WOULDBLOCK - connection in progress (nonblocking sockets only)
- * GSOCK_MEMERR - couldn't allocate memory.
- * GSOCK_IOERR - low-level error.
- */
-GSocketError GSocket_Connect(GSocket *socket, GSocketStream stream);
-
-
-/* Datagram sockets */
+ static GSocketManager *ms_manager;
+};
-/* GSocket_SetNonOriented:
- * Sets up this socket as a non-connection oriented (datagram) socket.
- * Before using this function, the local address must have been set
- * with GSocket_SetLocal(), or the call will fail. Returns GSOCK_NOERROR
- * on success, or one of the following otherwise.
- *
- * Error codes:
- * GSOCK_INVSOCK - the socket is in use.
- * GSOCK_INVADDR - the local address has not been set.
- * GSOCK_IOERR - low-level error.
- */
-GSocketError GSocket_SetNonOriented(GSocket *socket);
+#if defined(__WINDOWS__)
+ #include "wx/msw/gsockmsw.h"
+#else
+ #include "wx/unix/gsockunx.h"
+#endif
-/* Generic IO */
+/* Global initializers */
-/* Like recv(), send(), ... */
-
-/* For datagram sockets, the incoming / outgoing addresses
- * are stored as / read from the 'peer' address field.
- */
-int GSocket_Read(GSocket *socket, char *buffer, int size);
-int GSocket_Write(GSocket *socket, const char *buffer,
- int size);
-
-/* GSocket_Select:
- * Polls the socket to determine its status. This function will
- * check for the events specified in the 'flags' parameter, and
- * it will return a mask indicating which operations can be
- * performed. This function won't block, regardless of the
- * mode (blocking | nonblocking) of the socket.
- */
-GSocketEventFlags GSocket_Select(GSocket *socket, GSocketEventFlags flags);
+/* GSocket_Init() must be called at the beginning (but after calling
+ * GSocketManager::Set() if a custom manager should be used) */
+bool GSocket_Init();
+/* GSocket_Cleanup() must be called at the end */
+void GSocket_Cleanup();
-/* Attributes */
-/* GSocket_SetNonBlocking:
- * Sets the socket to non-blocking mode. All IO calls will return
- * immediately.
- */
-void GSocket_SetNonBlocking(GSocket *socket, int non_block);
+/* Constructors / Destructors */
-/* GSocket_SetTimeout:
- * Sets the timeout for blocking calls. Time is expressed in
- * milliseconds.
- */
-void GSocket_SetTimeout(GSocket *socket, unsigned long millisec);
+GSocket *GSocket_new();
-/* GSocket_GetError:
- * Returns the last error occured for this socket. Note that successful
- * operations do not clear this back to GSOCK_NOERROR, so use it only
- * after an error.
- */
-GSocketError WXDLLIMPEXP_NET GSocket_GetError(GSocket *socket);
-
-
-/* Callbacks */
-
-/* GSOCK_INPUT:
- * There is data to be read in the input buffer. If, after a read
- * operation, there is still data available, the callback function will
- * be called again.
- * GSOCK_OUTPUT:
- * The socket is available for writing. That is, the next write call
- * won't block. This event is generated only once, when the connection is
- * first established, and then only if a call failed with GSOCK_WOULDBLOCK,
- * when the output buffer empties again. This means that the app should
- * assume that it can write since the first OUTPUT event, and no more
- * OUTPUT events will be generated unless an error occurs.
- * GSOCK_CONNECTION:
- * Connection succesfully established, for client sockets, or incoming
- * client connection, for server sockets. Wait for this event (also watch
- * out for GSOCK_LOST) after you issue a nonblocking GSocket_Connect() call.
- * GSOCK_LOST:
- * The connection is lost (or a connection request failed); this could
- * be due to a failure, or due to the peer closing it gracefully.
- */
-/* GSocket_SetCallback:
- * Enables the callbacks specified by 'flags'. Note that 'flags'
- * may be a combination of flags OR'ed toghether, so the same
- * callback function can be made to accept different events.
- * The callback function must have the following prototype:
- *
- * void function(GSocket *socket, GSocketEvent event, char *cdata)
- */
-void GSocket_SetCallback(GSocket *socket, GSocketEventFlags flags,
- GSocketCallback fallback, char *cdata);
+/* GAddress */
-/* GSocket_UnsetCallback:
- * Disables all callbacks specified by 'flags', which may be a
- * combination of flags OR'ed toghether.
- */
-void GSocket_UnsetCallback(GSocket *socket, GSocketEventFlags flags);
+// Represents a socket endpoint, i.e. -- in spite of its name -- not an address
+// but an (address, port) pair
+struct GAddress
+{
+ struct sockaddr *m_addr;
+ size_t m_len;
+ GAddressType m_family;
+ int m_realfamily;
-/* GAddress */
+ GSocketError m_error;
+};
-GAddress *GAddress_new(void);
+GAddress *GAddress_new();
GAddress *GAddress_copy(GAddress *address);
void GAddress_destroy(GAddress *address);
*/
GSocketError GAddress_INET_SetHostName(GAddress *address, const char *hostname);
+GSocketError GAddress_INET_SetBroadcastAddress(GAddress *address);
GSocketError GAddress_INET_SetAnyAddress(GAddress *address);
GSocketError GAddress_INET_SetHostAddress(GAddress *address,
unsigned long hostaddr);
unsigned long GAddress_INET_GetHostAddress(GAddress *address);
unsigned short GAddress_INET_GetPort(GAddress *address);
-/* TODO: Define specific parts (INET6, UNIX) */
+GSocketError _GAddress_translate_from(GAddress *address,
+ struct sockaddr *addr, int len);
+GSocketError _GAddress_translate_to (GAddress *address,
+ struct sockaddr **addr, int *len);
+GSocketError _GAddress_Init_INET(GAddress *address);
-GSocketError GAddress_UNIX_SetPath(GAddress *address, const char *path);
-GSocketError GAddress_UNIX_GetPath(GAddress *address, char *path, size_t sbuf);
+#if wxUSE_IPV6
+
+GSocketError GAddress_INET6_SetHostName(GAddress *address, const char *hostname);
+GSocketError GAddress_INET6_SetAnyAddress(GAddress *address);
+GSocketError GAddress_INET6_SetHostAddress(GAddress *address,
+ struct in6_addr hostaddr);
+GSocketError GAddress_INET6_SetPortName(GAddress *address, const char *port,
+ const char *protocol);
+GSocketError GAddress_INET6_SetPort(GAddress *address, unsigned short port);
-#ifdef __cplusplus
-}
-#endif /* __cplusplus */
+GSocketError GAddress_INET6_GetHostName(GAddress *address, char *hostname,
+ size_t sbuf);
+GSocketError GAddress_INET6_GetHostAddress(GAddress *address,struct in6_addr *hostaddr);
+unsigned short GAddress_INET6_GetPort(GAddress *address);
+#endif // wxUSE_IPV6
+
+// these functions are available under all platforms but only implemented under
+// Unix ones, elsewhere they just return GSOCK_INVADDR
+GSocketError _GAddress_Init_UNIX(GAddress *address);
+GSocketError GAddress_UNIX_SetPath(GAddress *address, const char *path);
+GSocketError GAddress_UNIX_GetPath(GAddress *address, char *path, size_t sbuf);
-#endif /* wxUSE_SOCKETS || defined(__GSOCKET_STANDALONE__) */
+#endif /* wxUSE_SOCKETS */
-#endif /* __GSOCKET_H */
+#endif /* _WX_GSOCKET_H_ */
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