98781fa30e
Renamed GSOCK_TRYAGAIN to GSOCK_WOULDBLOCK Added GSOCK_TIMEOUT Enabled the replacement code for timeout handling in gsocket.c Renamed some var in gsockunx & gsocket git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@3327 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
245 lines
6.5 KiB
C
245 lines
6.5 KiB
C
/* -------------------------------------------------------------------------
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* Project: GSocket (Generic Socket)
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* Name: gsocket.h
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* Purpose: GSocket include file (system independent)
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* CVSID: $Id$
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* -------------------------------------------------------------------------
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*/
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#ifndef __GSOCKET_H
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#define __GSOCKET_H
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#include "wx/setup.h"
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#if wxUSE_SOCKETS
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#include <stddef.h>
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#include <sys/types.h>
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#if !defined(__cplusplus)
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typedef int bool;
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#endif
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#ifndef TRUE
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#define TRUE 1
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#endif
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#ifndef FALSE
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#define FALSE 0
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#endif
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typedef struct _GSocket GSocket;
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typedef struct _GAddress GAddress;
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typedef enum {
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GSOCK_NOFAMILY = 0,
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GSOCK_INET,
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GSOCK_INET6,
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GSOCK_UNIX
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} GAddressType;
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typedef enum {
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GSOCK_STREAMED,
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GSOCK_UNSTREAMED
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} GSocketStream;
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typedef enum {
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GSOCK_NOERROR = 0,
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GSOCK_INVOP,
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GSOCK_IOERR,
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GSOCK_INVADDR,
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GSOCK_INVSOCK,
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GSOCK_NOHOST,
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GSOCK_INVPORT,
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GSOCK_WOULDBLOCK,
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GSOCK_TIMEOUT,
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GSOCK_MEMERR
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} GSocketError;
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typedef enum {
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GSOCK_INPUT = 0,
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GSOCK_OUTPUT = 1,
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GSOCK_CONNECTION = 2,
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GSOCK_LOST = 3,
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GSOCK_MAX_EVENT = 4
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} GSocketEvent;
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enum {
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GSOCK_INPUT_FLAG = 1 << GSOCK_INPUT,
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GSOCK_OUTPUT_FLAG = 1 << GSOCK_OUTPUT,
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GSOCK_CONNECTION_FLAG = 1 << GSOCK_CONNECTION,
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GSOCK_LOST_FLAG = 1 << GSOCK_LOST
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};
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typedef int GSocketEventFlags;
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typedef void (*GSocketCallback)(GSocket *socket, GSocketEvent event,
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char *cdata);
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Global initialisers */
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/* GSocket_Init() must be called at the beginning */
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bool GSocket_Init();
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/* GSocket_Cleanup() must be called at the ending */
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void GSocket_Cleanup();
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/* Constructors / Destructors */
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GSocket *GSocket_new();
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void GSocket_destroy(GSocket *socket);
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/* This will disable all IO calls to this socket but errors are still available */
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void GSocket_Shutdown(GSocket *socket);
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/* Address handling */
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GSocketError GSocket_SetLocal(GSocket *socket, GAddress *address);
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GSocketError GSocket_SetPeer(GSocket *socket, GAddress *address);
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GAddress *GSocket_GetLocal(GSocket *socket);
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GAddress *GSocket_GetPeer(GSocket *socket);
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/* Non-oriented connections handlers */
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GSocketError GSocket_SetNonOriented(GSocket *socket);
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/* Server specific parts */
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/*
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GSocket_SetServer() setups the socket as a server. It uses the "Local" field
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of GSocket. "Local" must be set by GSocket_SetLocal() before
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GSocket_SetServer() is called. In the other case, it returns GSOCK_INVADDR.
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*/
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GSocketError GSocket_SetServer(GSocket *socket);
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/*
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GSocket_WaitConnection() waits for an incoming client connection.
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*/
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GSocket *GSocket_WaitConnection(GSocket *socket);
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/* Client specific parts */
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/*
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GSocket_Connect() establishes a client connection to a server using the "Peer"
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field of GSocket. "Peer" must be set by GSocket_SetPeer() before
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GSocket_Connect() is called. In the other case, it returns GSOCK_INVADDR.
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*/
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GSocketError GSocket_Connect(GSocket *socket, GSocketStream stream);
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/* Generic IO */
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/* Like recv(), send(), ... */
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/*
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NOTE: In case we read from a non-oriented connection, the incoming (outgoing)
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connection address is stored in the "Local" ("Peer") field.
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*/
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int GSocket_Read(GSocket *socket, char *buffer, int size);
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int GSocket_Write(GSocket *socket, const char *buffer,
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int size);
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bool GSocket_DataAvailable(GSocket *socket);
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/* Flags/Parameters */
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/*
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GSocket_SetTimeout() sets the timeout for reading and writing IO call. Time
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is expressed in milliseconds.
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*/
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void GSocket_SetTimeout(GSocket *socket, unsigned long millisec);
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/*
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GSocket_SetBlocking() puts the socket in non-blocking mode. This is useful
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if we don't want to wait.
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*/
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void GSocket_SetNonBlocking(GSocket *socket, bool non_block);
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/*
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GSocket_GetError() returns the last error occured on the socket stream.
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*/
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GSocketError GSocket_GetError(GSocket *socket);
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/* Callbacks */
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/*
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Only one fallback is possible for each event (INPUT, OUTPUT, CONNECTION, LOST)
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INPUT: The function is called when there is at least a byte in the
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input buffer
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OUTPUT: The function is called when the system is sure the next write call
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will not block
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CONNECTION: Two cases is possible:
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Client socket -> the connection is established
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Server socket -> a client request a connection
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LOST: the connection is lost
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SetCallback accepts a combination of these flags so a same callback can
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receive different events.
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An event is generated only once and its state is reseted when the relative
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IO call is requested.
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For example: INPUT -> GSocket_Read()
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CONNECTION -> GSocket_Accept()
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*/
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void GSocket_SetCallback(GSocket *socket, GSocketEventFlags event,
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GSocketCallback fallback, char *cdata);
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/*
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UnsetCallback will disables all fallbacks specified by "event".
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NOTE: event may be a combination of flags
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*/
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void GSocket_UnsetCallback(GSocket *socket, GSocketEventFlags event);
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/* GAddress */
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GAddress *GAddress_new();
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GAddress *GAddress_copy(GAddress *address);
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void GAddress_destroy(GAddress *address);
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void GAddress_SetFamily(GAddress *address, GAddressType type);
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GAddressType GAddress_GetFamily(GAddress *address);
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/*
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The use of any of the next functions will set the address family to the adapted
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one. For example if you use GAddress_INET_SetHostName, address family will be AF_INET
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implicitely
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*/
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GSocketError GAddress_INET_SetHostName(GAddress *address, const char *hostname);
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GSocketError GAddress_INET_SetHostAddress(GAddress *address,
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unsigned long hostaddr);
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GSocketError GAddress_INET_SetPortName(GAddress *address, const char *port,
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const char *protocol);
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GSocketError GAddress_INET_SetPort(GAddress *address, unsigned short port);
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GSocketError GAddress_INET_GetHostName(GAddress *address, char *hostname,
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size_t sbuf);
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unsigned long GAddress_INET_GetHostAddress(GAddress *address);
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unsigned short GAddress_INET_GetPort(GAddress *address);
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/* TODO: Define specific parts (INET6, UNIX) */
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GSocketError GAddress_UNIX_SetPath(GAddress *address, const char *path);
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GSocketError GAddress_UNIX_GetPath(GAddress *address, char *path, size_t sbuf);
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/*
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* System specific functions
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*/
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/* On systems needing an event id */
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void GSocket_SetEventID(GSocket *socket, unsigned long evt_id);
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/* On systems which don't have background refresh */
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void GSocket_DoEvent(unsigned long evt_id);
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#ifdef __cplusplus
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};
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#endif /* __cplusplus */
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#endif
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/* wxUSE_SOCKETS */
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#endif
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/* __GSOCKET_H */
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