* Name: gsocket.h
* Purpose: GSocket include file (system independent)
* CVSID: $Id$
- * Log: $Log$
- * Log: Revision 1.1 1999/07/22 17:51:47 GL
- * Log: Added GSocket for Unix (only GTK for the moment)
- * Log: Updated wxSocket to use GSocket API
- * Log: Added a progress bar to client.cpp
- * Log: Added CopyTo to wxMemoryOutputStream to copy the internal buffer to a specified buffer.
- * Log: Various changes/fixes to the high-level protocols FTP/HTTP
- * Log: Various Unicode fixes
- * Log: Removed sckint.*
- * Log:
- * Log: Revision 1.2 1999/07/18 15:54:28 guilhem
- * Log: Copyright, etc.
- * Log:
* -------------------------------------------------------------------------
*/
#ifndef __GSOCKET_H
#define __GSOCKET_H
+#include "wx/setup.h"
+
+#if wxUSE_SOCKETS
+
+#include <stddef.h>
#include <sys/types.h>
#if !defined(__cplusplus)
-
typedef int bool;
-
#endif
#ifndef TRUE
#define FALSE 0
#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
typedef struct _GSocket GSocket;
typedef struct _GAddress GAddress;
GSOCK_INVADDR,
GSOCK_INVSOCK,
GSOCK_NOHOST,
- GSOCK_INVPORT
+ GSOCK_INVPORT,
+ GSOCK_WOULDBLOCK,
+ GSOCK_TIMEDOUT,
+ GSOCK_MEMERR
} GSocketError;
typedef enum {
GSOCK_INPUT_FLAG = 1 << GSOCK_INPUT,
GSOCK_OUTPUT_FLAG = 1 << GSOCK_OUTPUT,
GSOCK_CONNECTION_FLAG = 1 << GSOCK_CONNECTION,
- GSOCK_LOST_FLAG = 1 << GSOCK_LOST,
+ GSOCK_LOST_FLAG = 1 << GSOCK_LOST
};
typedef int GSocketEventFlags;
-typedef void (*GSocketFallback)(GSocket *socket, GSocketEvent event,
- char *cdata);
+typedef void (*GSocketCallback)(GSocket *socket, GSocketEvent event,
+ char *cdata);
-#ifdef __cplusplus
-extern "C" {
-#endif
+
+/* Global initializers */
+
+/* GSocket_Init() must be called at the beginning */
+bool GSocket_Init();
+/* GSocket_Cleanup() must be called at the ending */
+void GSocket_Cleanup();
/* Constructors / Destructors */
GSocket *GSocket_new();
void GSocket_destroy(GSocket *socket);
-/* This will disable all IO calls to this socket but errors are still available */
+/* This will disable all further IO calls to this socket */
void GSocket_Shutdown(GSocket *socket);
/* Address handling */
/* Server specific parts */
-/*
- GSocket_SetServer() setup the socket as a server. It uses the "Local" field
- of GSocket. "Local" must be set by GSocket_SetLocal() before
- GSocket_SetServer() is called. In the other case, it returns GSOCK_INVADDR.
-*/
+/* GSocket_SetServer:
+ * Sets up the socket as a server. It uses the "Local" field of GSocket.
+ * "Local" must be set by GSocket_SetLocal() before GSocket_SetServer()
+ * is called. Possible error codes are: GSOCK_INVSOCK if socket has not
+ * been initialized, GSOCK_INVADDR if the local address has not been
+ * defined and GSOCK_IOERR for other internal errors.
+ */
GSocketError GSocket_SetServer(GSocket *socket);
-/*
- GSocket_WaitConnection() waits for an incoming client connection.
-*/
+/* GSocket_WaitConnection:
+ * Waits for an incoming client connection.
+ */
GSocket *GSocket_WaitConnection(GSocket *socket);
/* Client specific parts */
-/*
- GSocket_Connect() establishes a client connection to a server using the "Peer"
- field of GSocket. "Peer" must be set by GSocket_SetPeer() before
- GSocket_Connect() is called. In the other case, it returns GSOCK_INVADDR.
-*/
+/* GSocket_Connect:
+ * Establishes a client connection to a server using the "Peer"
+ * field of GSocket. "Peer" must be set by GSocket_SetPeer() before
+ * GSocket_Connect() is called. Possible error codes are GSOCK_INVSOCK,
+ * GSOCK_INVADDR, GSOCK_TIMEDOUT, GSOCK_WOULDBLOCK and GSOCK_IOERR.
+ * If a socket is nonblocking and Connect() returns GSOCK_WOULDBLOCK,
+ * the connection request can be completed later. Use GSocket_Select()
+ * to check it, or wait for a GSOCK_CONNECTION event.
+ */
GSocketError GSocket_Connect(GSocket *socket, GSocketStream stream);
/* Generic IO */
/* Like recv(), send(), ... */
-/*
- NOTE: In case we read from a non-oriented connection, the incoming (outgoing)
- connection address is stored in the "Local" ("Peer") field.
-*/
+
+/* NOTE: In case we read from a non-oriented connection, the incoming
+ * (outgoing) connection address is stored in the "Local" ("Peer")
+ * field.
+ */
int GSocket_Read(GSocket *socket, char *buffer, int size);
int GSocket_Write(GSocket *socket, const char *buffer,
- int size);
-bool GSocket_DataAvailable(GSocket *socket);
+ 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);
-/* Flags */
+/* Flags/Parameters */
-/*
- GSocket_SetBlocking() puts the socket in non-blocking mode. This is useful
- if we don't want to wait.
-*/
-void GSocket_SetBlocking(GSocket *socket, bool block);
+/* GSocket_SetTimeout:
+ * Sets the timeout for blocking calls. Time is
+ * expressed in milliseconds.
+ */
+void GSocket_SetTimeout(GSocket *socket, unsigned long millisec);
-/*
- GSocket_GetError() returns the last error occured on the socket stream.
-*/
+/* GSocket_SetNonBlocking:
+ * Sets the socket to non-blocking mode. This is useful if
+ * we don't want to wait.
+ */
+void GSocket_SetNonBlocking(GSocket *socket, bool non_block);
+/* GSocket_GetError:
+ * Returns the last error occured for this socket.
+ */
GSocketError GSocket_GetError(GSocket *socket);
/* Callbacks */
-/*
- Only one fallback is possible for each event (INPUT, OUTPUT, CONNECTION, LOST)
- INPUT: The function is called when there is at least a byte in the
- input buffer
- OUTPUT: The function is called when the system is sure the next write call
- will not block
- CONNECTION: Two cases is possible:
- Client socket -> the connection is established
- Server socket -> a client request a connection
- LOST: the connection is lost
-
- SetFallback accepts a combination of these flags so a same callback can
- receive different events.
-
- An event is generated only once and its state is reseted when the relative
- IO call is requested.
- For example: INPUT -> GSocket_Read()
- CONNECTION -> GSocket_Accept()
-*/
-void GSocket_SetFallback(GSocket *socket, GSocketEventFlags event,
- GSocketFallback fallback, char *cdata);
-
-/*
- UnsetFallback will disables all fallbacks specified by "event".
- NOTE: event may be a combination of flags
-*/
-void GSocket_UnsetFallback(GSocket *socket, GSocketEventFlags event);
+/* Only one callback is possible for each event (INPUT, OUTPUT, CONNECTION
+ * and LOST). The callbacks are called in the following situations:
+ *
+ * INPUT: There is at least one byte in the input buffer
+ * OUTPUT: The system is sure that the next write call will not block
+ * CONNECTION: Two cases are possible:
+ * Client socket -> the connection is established
+ * Server socket -> a client requests a connection
+ * LOST: The connection is lost
+ *
+ * An event is generated only once and its state is reseted when the
+ * relative IO call is requested.
+ * For example: INPUT -> GSocket_Read()
+ * CONNECTION -> GSocket_Accept()
+ */
+
+/* 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);
+
+/* 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);
/* GAddress */
void GAddress_SetFamily(GAddress *address, GAddressType type);
GAddressType GAddress_GetFamily(GAddress *address);
-/*
- The use of any of the next functions will set the address family to the adapted
- one. For example if you use GAddress_INET_SetHostName, address family will be AF_INET
- implicitely
-*/
+/* The use of any of the next functions will set the address family to
+ * the specific one. For example if you use GAddress_INET_SetHostName,
+ * address family will be implicitly set to AF_INET.
+ */
GSocketError GAddress_INET_SetHostName(GAddress *address, const char *hostname);
GSocketError GAddress_INET_SetHostAddress(GAddress *address,
unsigned long hostaddr);
-GSocketError GAddress_INET_SetPortName(GAddress *address, const char *port);
+GSocketError GAddress_INET_SetPortName(GAddress *address, const char *port,
+ const char *protocol);
GSocketError GAddress_INET_SetPort(GAddress *address, unsigned short port);
GSocketError GAddress_INET_GetHostName(GAddress *address, char *hostname,
GSocketError GAddress_UNIX_SetPath(GAddress *address, const char *path);
GSocketError GAddress_UNIX_GetPath(GAddress *address, char *path, size_t sbuf);
-/*
- * System specific functions
- */
-
-/* On systems needing an event id */
-void GSocket_SetEventID(GSocket *socket, unsigned long evt_id);
-
-/* On systems which don't have background refresh */
-void GSocket_DoEvent(unsigned long evt_id);
-
#ifdef __cplusplus
};
-#endif
+#endif /* __cplusplus */
-#endif
- /* __GSOCKET_H */
+
+#endif /* wxUSE_SOCKETS */
+
+#endif /* __GSOCKET_H */
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