sockets.h

Open DMT Client C Source code

// ----------------------------------------------------------------------------
// Copyright 2006-2007, Martin D. Flynn
// All rights reserved
// ----------------------------------------------------------------------------
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// 
// http://www.apache.org/licenses/LICENSE-2.0
// 
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// ----------------------------------------------------------------------------

#ifndef _SOCKET_H
#define _SOCKET_H
#ifdef __cplusplus
extern "C" {
#endif

#if defined(TARGET_WINCE)
#include <winsock2.h>
#else
#include <sys/socket.h>
#endif

#include "tools/stdtypes.h"

// ----------------------------------------------------------------------------

// uncomment to enable server-side sockets (UDP/TCP)
// This implementation accepts only a single client at a time
//#define ENABLE_SERVER_SOCKET

// ----------------------------------------------------------------------------

typedef struct {
    int             type;       // SOCK_STREAM, SOCK_DGRAM
#if defined(ENABLE_SERVER_SOCKET)
#if defined(TARGET_WINCE)
    SOCKET          serverfd;
#else
    int             serverfd;   // '-1' for client side sockets
#endif
#endif
#if defined(TARGET_WINCE)
    SOCKET          sockfd;
#else
    int             sockfd;
#endif
    utBool          nonBlock;
    int             avail;
    char            host[32];
    utBool          hostInit;
    UInt8           hostAddr[6];
    int             port;
} Socket_t;

// ----------------------------------------------------------------------------
// Internal socket error codes

#define COMERR_SUCCESS              0       // success
#define COMERR_SOCKET_FILENO        -401    // socket invalid fileno
#define COMERR_SOCKET_OPEN          -411    // socket open error
#define COMERR_SOCKET_OPTION        -412    // socket unable to set option
#define COMERR_SOCKET_HOST          -421    // socket invalid host
#define COMERR_SOCKET_BIND          -422    // socket unable to bind address
#define COMERR_SOCKET_CONNECT       -423    // socket unable to connect
#define COMERR_SOCKET_ACCEPT        -424    // socket unable to accept client
#define COMERR_SOCKET_READ          -431    // socket read error
#define COMERR_SOCKET_WRITE         -432    // socket write error
#define COMERR_SOCKET_TIMEOUT       -433    // socket read/write timeout

// ----------------------------------------------------------------------------

void socketInitStruct(Socket_t *sock, const char *host, int port, int type);

int socketOpenUDPClient(Socket_t *sock, const char *host, int port);
int socketOpenTCPClient(Socket_t *sock, const char *host, int port);
utBool socketIsOpenClient(Socket_t *sock);

int socketCloseClient(Socket_t *sock);

utBool socketEnableNonBlockingClient(Socket_t *sock, utBool enabled);
utBool socketIsNonBlockingClient(Socket_t *sock);

int socketReadTCP(Socket_t *sock, UInt8 *buf, int bufSize, long timeoutMS);

int socketWriteTCP(Socket_t *sock, const UInt8 *buf, int bufLen);
int socketWriteUDP(Socket_t *sock, const UInt8 *buf, int bufLen);

// ----------------------------------------------------------------------------

#if defined(ENABLE_SERVER_SOCKET)
int socketOpenUDPServer(Socket_t *sock, int port);
int socketOpenTCPServer(Socket_t *sock, int port);
utBool socketIsOpenServer(Socket_t *sock);
int socketAcceptTCPClient(Socket_t *sock);
int socketCloseServer(Socket_t *sock);
int socketReadUDP(Socket_t *sock, UInt8 *buf, int bufSize, long timeoutMS);
#endif

// ----------------------------------------------------------------------------

#ifdef __cplusplus
}
#endif
#endif