typedef struct { ... } SilcPacketContext;

    In packet sending this is filled and sent to silc_packet_assemble 
    which then uses it to assemble new packet. In packet reception pointer 
    to this context is sent to silc_packet_parse which parses the packet 
    and returns the relevant information to this structure. On packet 
    reception returned ID's are always the hash values of the ID's from 
    the packet. 

    Short description of the fields following:

    SilcUInt16 truelen

      True length of the packet.  This may be set by the caller before
      calling any of the silc_packet_* routines.  If not provided the
      library will calculate the values.

    SilcPacketFlags flags

      Packet flags. Flags are defined above.

    SilcPacketType type

      Type of the packet. Types are defined below.

    unsigned char *src_id
    SilcUInt8 src_id_len
    SilcUInt8 src_id_type

      Source ID, its length and type. On packet reception retuned ID's
      are always the hash values of the ID's from the packet.

    unsigned char *dst_id;
    SilcUInt8 dst_id_len;
    SilcUInt8 src_id_type;

      Destination ID, its length and type. On packet reception retuned
      ID's are always the hash values of the ID's from the packet.

    bool long_pad
 
      If set to TRUE the packet will include the maximum padding allowed
      in SILC packet, which is 128 bytes.  If FALSE only the amount of
      padding needed will be applied.

    SilcUInt16 users;

      Reference counter for this context. The context is freed only 
      after the reference counter hits zero. The counter is added
      calling silc_packet_context_dup and decreased by calling the
      silc_packet_context_free.

    SilcUInt8 padlen

      The padded length of the packet.  This may be set by the caller
      before calling any of the silc_packet_* routines. If not provided
      the library will calculate the values.

    SilcUInt32 sequence;

      Packet sequence number.  Set only when this context is a parsed
      packet.

    SilcBuffer buffer

      The actual packet data.  Set only when this context is a parsed
      packet.