Socket Parameters

The socket parameters used by eXtremeDB network communications are defined by the following structure defined in header file mconet.h:

     
    typedef struct mco_sock_params_t_
    {
        int             mode;       /* bit set of MCO_SOCK_OPEN_MODE */
        int             linger;
        int             sndbuf;     /* size of socket send buffer in bytes */
        int             rcvbuf;     /* size of socket receive buffer in bytes */

	int             compression_level; /* level of compression */
        MCO_SOCK_DOMAIN domain;     /* socket domain (may be flag in open_mode ?) */
        MCO_SOCK_TYPE   type;       /* TCP / UDP )may be flag in open_mode ? */
        const char     *mcast_addr; /* used only if type == MCO_SOCK_MCAST */
        void           *ssl_params; /* used for SSL sockets when OpenSSL is supported */
        MCO_RET         last_error; /* OUT : eXtremeDB's error code if mco_create_socket() has failed */
        int             last_errno; /* OUT : value of errno if mco_create_socket() has failed */
    } mco_sock_params_t;
 

The mode element is a bitmask that can be set with a combination of the following values:

 
    typedef enum MCO_SOCK_OPEN_MODE_E_ 
    {
        MCO_SOCK_NODELAY = 1,
        MCO_SOCK_DO_NOT_REUSE_ADDRESS = 2,
        MCO_SOCK_NON_BLOCKING = 4,
        MCO_SOCK_KEEP_ALIVE = 8,
        MCO_SOCK_DO_NOT_CLOEXEC = 16
     
    } MCO_SOCK_OPEN_MODE;
     

The domain element must be one of the following:

 
    typedef enum MCO_SOCK_DOMAIN_E_ 
    {
        MCO_SOCK_INET_DOMAIN,    /* IPv4 or IPv6 */
        MCO_SOCK_INETV4_DOMAIN,  /* IPv4 only */
        MCO_SOCK_INETV6_DOMAIN,  /* IPv6 only */
        MCO_SOCK_LOCAL_DOMAIN,
        MCO_SOCK_SDP_DOMAIN
     
    } MCO_SOCK_DOMAIN;
 

The type element must be one of the following:

 
    typedef enum MCO_SOCK_TYPE_E_ 
    {
        MCO_SOCK_STREAM,
        MCO_SOCK_DGRAM,
        MCO_SOCK_MCAST,
     
    } MCO_SOCK_TYPE;