uint8_t connect(SOCKET s, uint8_t *destinationIp, uint16_t destinationPort) {
uint16_t i;
char buffer[59];
uint8_t h=0;
memcpy(_SOCKETS[s].destinationIp, destinationIp, 4);
_SOCKETS[s].destinationPort = destinationPort;
make_arp_request((uint8_t*)buffer, destinationIp);
_SOCKETS[s].clientState = ARP_REQUEST_SENT;
#ifdef ETHERSHIELD_DEBUG
ethershieldDebug("Sent ARP request.\r\n");
#endif
for (i = 0; _SOCKETS[s].clientState != GOT_MAC && i < MAX_ITERATIONS; i++) {
flushSockets(); //it'll fill destinationMac on socket struct
for(h=0; h<ARP_CACHE_SIZE; h++)
if(arp_table.n > h)
if(memcmp(destinationIp, arp_table.t[h].ipAddr, 4) == 0)
_SOCKETS[s].clientState = GOT_MAC;
}
if (_SOCKETS[s].clientState != GOT_MAC) {
return 0;
}
#ifdef ETHERSHIELD_DEBUG
ethershieldDebug("MAC received, sending TCP SYN.\r\n");
#endif
tcp_client_send_packet((uint8_t*)buffer, destinationPort, sourcePort++, TCP_FLAG_SYN_V,
1, 1, 0, 0, _SOCKETS[s].destinationMac,
destinationIp);
_SOCKETS[s].clientState = TCP_SYN_SENT;
#ifdef ETHERSHIELD_DEBUG
ethershieldDebug("TCP SYN sent.\r\n");
#endif
for (i = 0; _SOCKETS[s].clientState != SOCK_ESTABLISHED && i < MAX_ITERATIONS; i++) {
flushSockets();
}
return _SOCKETS[s].clientState == SOCK_ESTABLISHED;
//TODO: Maybe use a timeout instead of MAX_ITERATIONS to receive SYN+ACK
}
void EtherShield::ES_tcp_client_send_packet(uint8_t *buf,uint16_t dest_port, uint16_t src_port, uint8_t flags, uint8_t max_segment_size,
uint8_t clear_seqck, uint16_t next_ack_num, uint16_t dlength, uint8_t *dest_mac, uint8_t *dest_ip){
tcp_client_send_packet(buf, dest_port, src_port, flags, max_segment_size, clear_seqck, next_ack_num, dlength,dest_mac,dest_ip);
}
