-typedef struct connection_t {
- char *name; /* name of this connection */
- ipv4_t address; /* his real (internet) ip */
- char *hostname; /* the hostname of its real ip */
- int protocol_version; /* used protocol */
- short unsigned int port; /* port number for UDP traffic */
- long int options; /* options turned on for this connection */
-
- int socket; /* our udp vpn socket */
- int meta_socket; /* our tcp meta socket */
- status_bits_t status; /* status info */
-
- RSA *rsa_key; /* the public/private key */
- EVP_CIPHER_CTX *cipher_inctx; /* Context of encrypted meta data that will come from him to us */
- EVP_CIPHER_CTX *cipher_outctx; /* Context of encrypted meta data that will be sent from us to him */
- char *cipher_inkey; /* His symmetric meta key */
- char *cipher_outkey; /* Our symmetric meta key */
- EVP_CIPHER *cipher_pkttype; /* Cipher type for encrypted vpn packets */
- char *cipher_pktkey; /* Cipher key and iv */
- int cipher_pktkeylength; /* Cipher key and iv length*/
-
- char *buffer; /* metadata input buffer */
- int buflen; /* bytes read into buffer */
- int reqlen; /* length of first request in buffer */
- int allow_request; /* defined if there's only one request possible */
-
- time_t last_ping_time; /* last time we saw some activity from the other end */
-
- list_t *queue; /* Queue for packets awaiting to be encrypted */
-
- char *mychallenge; /* challenge we received from him */
- char *hischallenge; /* challenge we sent to him */
-
- struct connection_t *nexthop; /* nearest meta-hop in this direction */
-
- avl_tree_t *subnet_tree; /* Pointer to a tree of subnets belonging to this connection */
-
- struct config_t *config; /* Pointer to configuration tree belonging to this host */
-} connection_t;