struct SilcSocketConnectionStruct { ... };

    This object holds information about the connected sockets to the server.
    This is quite important object since this is referenced by the server all
    the time when figuring out what the connection is supposed to be doing
    and to whom we should send a message. This structure is the structure
    for the SilcSocketConnection forward declaration.

    Following short description of the fields:

    int sock

      The actual connected socket. This is usually saved when accepting
      new connection to the server.

    SilcSocketType type

      Type of the socket. This identifies the type of the connection. This
      is mainly used to identify whether the connection is a client or a
      server connection.

    void *user_data

      This is a pointer to a data that is is saved here at the same
      time a new connection object is allocated. Usually this is a
      back-pointer to some important data for fast referencing. For
      SILC server this is a pointer to the ID list and for SILC client
      to object holding active connections (windows).

    SilcProtocol protocol

      Protocol object for the socket. Currently only one protocol can be
      executing at a time for a particular socket.

    SilcUInt32 flags

      Socket flags that indicate the status of the socket. This can
      indicate several different status that can affect the use of the
      socket object.

    int users

      Reference counter. When allocated it is set to one (1) and it won't
      be freed until it hits zero (0).

    SilcSocketConnectionHB hb

      The heartbeat context.  If NULL, heartbeat is not performed.

    SilcBuffer inbuf
    SilcBuffer outbuf

      Incoming and outgoing buffers for the particular socket connection.
      Incoming data from the socket is put after decryption in to the
      inbuf buffer and outgoing data after encryption is put to the outbuf
      buffer.

    char *hostname
    char *ip
    SilcUInt16 port

      Resolved hostname, IP address and port of the connection who owns
      this object.