owerror_t opentcp_send(OpenQueueEntry_t* msg) { //[command] data
msg->owner = COMPONENT_OPENTCP;
if (tcp_vars.state!=TCP_STATE_ESTABLISHED) {
openserial_printError(COMPONENT_OPENTCP,ERR_WRONG_TCP_STATE,
(errorparameter_t)tcp_vars.state,
(errorparameter_t)2);
return E_FAIL;
}
if (tcp_vars.dataToSend!=NULL) {
openserial_printError(COMPONENT_OPENTCP,ERR_BUSY_SENDING,
(errorparameter_t)0,
(errorparameter_t)0);
return E_FAIL;
}
//I receive command 'send', I send data
msg->l4_protocol = IANA_TCP;
msg->l4_sourcePortORicmpv6Type = tcp_vars.myPort;
msg->l4_destination_port = tcp_vars.hisPort;
msg->l4_payload = msg->payload;
msg->l4_length = msg->length;
memcpy(&(msg->l3_destinationAdd),&tcp_vars.hisIPv6Address,sizeof(open_addr_t));
tcp_vars.dataToSend = msg;
prependTCPHeader(tcp_vars.dataToSend,
TCP_ACK_YES,
TCP_PSH_YES,
TCP_RST_NO,
TCP_SYN_NO,
TCP_FIN_NO);
tcp_vars.mySeqNum += tcp_vars.dataToSend->l4_length;
tcp_change_state(TCP_STATE_ALMOST_DATA_SENT);
return forwarding_send(tcp_vars.dataToSend);
}
owerror_t opentcp_close() { //[command] teardown
OpenQueueEntry_t* tempPkt;
if ( tcp_vars.state==TCP_STATE_ALMOST_CLOSE_WAIT ||
tcp_vars.state==TCP_STATE_CLOSE_WAIT ||
tcp_vars.state==TCP_STATE_ALMOST_LAST_ACK ||
tcp_vars.state==TCP_STATE_LAST_ACK ||
tcp_vars.state==TCP_STATE_CLOSED) {
//not an error, can happen when distant node has already started tearing down
return E_SUCCESS;
}
//I receive command 'close', I send FIN+ACK
tempPkt = openqueue_getFreePacketBuffer(COMPONENT_OPENTCP);
if (tempPkt==NULL) {
openserial_printError(COMPONENT_OPENTCP,ERR_NO_FREE_PACKET_BUFFER,
(errorparameter_t)0,
(errorparameter_t)0);
return E_FAIL;
}
tempPkt->creator = COMPONENT_OPENTCP;
tempPkt->owner = COMPONENT_OPENTCP;
memcpy(&(tempPkt->l3_destinationAdd),&tcp_vars.hisIPv6Address,sizeof(open_addr_t));
prependTCPHeader(tempPkt,
TCP_ACK_YES,
TCP_PSH_NO,
TCP_RST_NO,
TCP_SYN_NO,
TCP_FIN_YES);
tcp_vars.mySeqNum++;
tcp_change_state(TCP_STATE_ALMOST_FIN_WAIT_1);
return forwarding_send(tempPkt);
}
owerror_t opentcp_connect(open_addr_t* dest, uint16_t param_tcp_hisPort, uint16_t param_tcp_myPort) {
//[command] establishment
OpenQueueEntry_t* tempPkt;
if (tcp_vars.state!=TCP_STATE_CLOSED) {
openserial_printError(COMPONENT_OPENTCP,ERR_WRONG_TCP_STATE,
(errorparameter_t)tcp_vars.state,
(errorparameter_t)0);
return E_FAIL;
}
tcp_vars.myPort = param_tcp_myPort;
tcp_vars.hisPort = param_tcp_hisPort;
memcpy(&tcp_vars.hisIPv6Address,dest,sizeof(open_addr_t));
//I receive command 'connect', I send SYNC
tempPkt = openqueue_getFreePacketBuffer(COMPONENT_OPENTCP);
if (tempPkt==NULL) {
openserial_printError(COMPONENT_OPENTCP,ERR_NO_FREE_PACKET_BUFFER,
(errorparameter_t)0,
(errorparameter_t)0);
return E_FAIL;
}
tempPkt->creator = COMPONENT_OPENTCP;
tempPkt->owner = COMPONENT_OPENTCP;
memcpy(&(tempPkt->l3_destinationAdd),&tcp_vars.hisIPv6Address,sizeof(open_addr_t));
tcp_vars.mySeqNum = TCP_INITIAL_SEQNUM;
prependTCPHeader(tempPkt,
TCP_ACK_NO,
TCP_PSH_NO,
TCP_RST_NO,
TCP_SYN_YES,
TCP_FIN_NO);
tcp_change_state(TCP_STATE_ALMOST_SYN_SENT);
return forwarding_send(tempPkt);
}
error_t openudp_send(OpenQueueEntry_t* msg) {
msg->owner = COMPONENT_OPENUDP;
msg->l4_protocol = IANA_UDP;
msg->l4_payload = msg->payload;
msg->l4_length = msg->length;
packetfunctions_reserveHeaderSize(msg,sizeof(udp_ht));
packetfunctions_htons(msg->l4_sourcePortORicmpv6Type,&(msg->payload[0]));
packetfunctions_htons(msg->l4_destination_port,&(msg->payload[2]));
packetfunctions_htons(msg->length,&(msg->payload[4]));
packetfunctions_calculateChecksum(msg,(uint8_t*)&(((udp_ht*)msg->payload)->checksum));
return forwarding_send(msg);
}
error_t icmpv6_send(OpenQueueEntry_t* msg) {
msg->owner = COMPONENT_ICMPv6;
msg->l4_protocol = IANA_ICMPv6;
return forwarding_send(msg);
}
void opentcp_receive(OpenQueueEntry_t* msg) {
OpenQueueEntry_t* tempPkt;
bool shouldIlisten;
msg->owner = COMPONENT_OPENTCP;
msg->l4_protocol = IANA_TCP;
msg->l4_payload = msg->payload;
msg->l4_length = msg->length;
msg->l4_sourcePortORicmpv6Type = packetfunctions_ntohs((uint8_t*)&(((tcp_ht*)msg->payload)->source_port));
msg->l4_destination_port = packetfunctions_ntohs((uint8_t*)&(((tcp_ht*)msg->payload)->destination_port));
if (
tcp_vars.state!=TCP_STATE_CLOSED &&
(
msg->l4_destination_port != tcp_vars.myPort ||
msg->l4_sourcePortORicmpv6Type != tcp_vars.hisPort ||
packetfunctions_sameAddress(&(msg->l3_destinationAdd),&tcp_vars.hisIPv6Address)==FALSE
)
) {
openqueue_freePacketBuffer(msg);
return;
}
if (containsControlBits(msg,TCP_ACK_WHATEVER,TCP_RST_YES,TCP_SYN_WHATEVER,TCP_FIN_WHATEVER)) {
//I receive RST[+*], I reset
opentcp_reset();
openqueue_freePacketBuffer(msg);
}
switch (tcp_vars.state) {
case TCP_STATE_CLOSED: //[receive] establishement
switch(msg->l4_destination_port) {
case WKP_TCP_HTTP:
shouldIlisten = ohlone_shouldIlisten();
break;
case WKP_TCP_ECHO:
shouldIlisten = tcpecho_shouldIlisten();
break;
case WKP_TCP_INJECT:
shouldIlisten = tcpinject_shouldIlisten();
break;
case WKP_TCP_DISCARD:
shouldIlisten = tcpprint_shouldIlisten();
break;
default:
openserial_printError(COMPONENT_OPENTCP,ERR_UNSUPPORTED_PORT_NUMBER,
(errorparameter_t)msg->l4_sourcePortORicmpv6Type,
(errorparameter_t)2);
shouldIlisten = FALSE;
break;
}
if ( containsControlBits(msg,TCP_ACK_NO,TCP_RST_NO,TCP_SYN_YES,TCP_FIN_NO) && shouldIlisten==TRUE ) {
tcp_vars.myPort = msg->l4_destination_port;
//I receive SYN, I send SYN+ACK
tcp_vars.hisNextSeqNum = (packetfunctions_ntohl((uint8_t*)&(((tcp_ht*)msg->payload)->sequence_number)))+1;
tcp_vars.hisPort = msg->l4_sourcePortORicmpv6Type;
memcpy(&tcp_vars.hisIPv6Address,&(msg->l3_destinationAdd),sizeof(open_addr_t));
tempPkt = openqueue_getFreePacketBuffer(COMPONENT_OPENTCP);
if (tempPkt==NULL) {
openserial_printError(COMPONENT_OPENTCP,ERR_NO_FREE_PACKET_BUFFER,
(errorparameter_t)0,
(errorparameter_t)0);
openqueue_freePacketBuffer(msg);
return;
}
tempPkt->creator = COMPONENT_OPENTCP;
tempPkt->owner = COMPONENT_OPENTCP;
memcpy(&(tempPkt->l3_destinationAdd),&tcp_vars.hisIPv6Address,sizeof(open_addr_t));
prependTCPHeader(tempPkt,
TCP_ACK_YES,
TCP_PSH_NO,
TCP_RST_NO,
TCP_SYN_YES,
TCP_FIN_NO);
tcp_vars.mySeqNum++;
tcp_change_state(TCP_STATE_ALMOST_SYN_RECEIVED);
forwarding_send(tempPkt);
} else {
opentcp_reset();
openserial_printError(COMPONENT_OPENTCP,ERR_TCP_RESET,
(errorparameter_t)tcp_vars.state,
(errorparameter_t)0);
}
openqueue_freePacketBuffer(msg);
break;
case TCP_STATE_SYN_SENT: //[receive] establishement
if (containsControlBits(msg,TCP_ACK_YES,TCP_RST_NO,TCP_SYN_YES,TCP_FIN_NO)) {
//I receive SYN+ACK, I send ACK
tcp_vars.hisNextSeqNum = (packetfunctions_ntohl((uint8_t*)&(((tcp_ht*)msg->payload)->sequence_number)))+1;
tempPkt = openqueue_getFreePacketBuffer(COMPONENT_OPENTCP);
if (tempPkt==NULL) {
openserial_printError(COMPONENT_OPENTCP,ERR_NO_FREE_PACKET_BUFFER,
(errorparameter_t)0,
(errorparameter_t)0);
openqueue_freePacketBuffer(msg);
return;
}
tempPkt->creator = COMPONENT_OPENTCP;
tempPkt->owner = COMPONENT_OPENTCP;
memcpy(&(tempPkt->l3_destinationAdd),&tcp_vars.hisIPv6Address,sizeof(open_addr_t));
prependTCPHeader(tempPkt,
TCP_ACK_YES,
TCP_PSH_NO,
TCP_RST_NO,
TCP_SYN_NO,
TCP_FIN_NO);
tcp_change_state(TCP_STATE_ALMOST_ESTABLISHED);
forwarding_send(tempPkt);
} else if (containsControlBits(msg,TCP_ACK_NO,TCP_RST_NO,TCP_SYN_YES,TCP_FIN_NO)) {
//I receive SYN, I send SYN+ACK
tcp_vars.hisNextSeqNum = (packetfunctions_ntohl((uint8_t*)&(((tcp_ht*)msg->payload)->sequence_number)))+1;
tempPkt = openqueue_getFreePacketBuffer(COMPONENT_OPENTCP);
if (tempPkt==NULL) {
openserial_printError(COMPONENT_OPENTCP,ERR_NO_FREE_PACKET_BUFFER,
(errorparameter_t)0,
(errorparameter_t)0);
openqueue_freePacketBuffer(msg);
return;
}
tempPkt->creator = COMPONENT_OPENTCP;
tempPkt->owner = COMPONENT_OPENTCP;
memcpy(&(tempPkt->l3_destinationAdd),&tcp_vars.hisIPv6Address,sizeof(open_addr_t));
prependTCPHeader(tempPkt,
TCP_ACK_YES,
TCP_PSH_NO,
TCP_RST_NO,
TCP_SYN_YES,
TCP_FIN_NO);
tcp_vars.mySeqNum++;
tcp_change_state(TCP_STATE_ALMOST_SYN_RECEIVED);
forwarding_send(tempPkt);
} else {
opentcp_reset();
openserial_printError(COMPONENT_OPENTCP,ERR_TCP_RESET,
(errorparameter_t)tcp_vars.state,
(errorparameter_t)1);
}
openqueue_freePacketBuffer(msg);
break;
case TCP_STATE_SYN_RECEIVED: //[receive] establishement
if (containsControlBits(msg,TCP_ACK_YES,TCP_RST_NO,TCP_SYN_NO,TCP_FIN_NO)) {
//I receive ACK, the virtual circuit is established
tcp_change_state(TCP_STATE_ESTABLISHED);
} else {
opentcp_reset();
openserial_printError(COMPONENT_OPENTCP,ERR_TCP_RESET,
(errorparameter_t)tcp_vars.state,
(errorparameter_t)2);
}
openqueue_freePacketBuffer(msg);
break;
case TCP_STATE_ESTABLISHED: //[receive] data/teardown
if (containsControlBits(msg,TCP_ACK_WHATEVER,TCP_RST_NO,TCP_SYN_NO,TCP_FIN_YES)) {
//I receive FIN[+ACK], I send ACK
tcp_vars.hisNextSeqNum = (packetfunctions_ntohl((uint8_t*)&(((tcp_ht*)msg->payload)->sequence_number)))+msg->length-sizeof(tcp_ht)+1;
tempPkt = openqueue_getFreePacketBuffer(COMPONENT_OPENTCP);
if (tempPkt==NULL) {
openserial_printError(COMPONENT_OPENTCP,ERR_NO_FREE_PACKET_BUFFER,
(errorparameter_t)0,
(errorparameter_t)0);
openqueue_freePacketBuffer(msg);
return;
}
tempPkt->creator = COMPONENT_OPENTCP;
tempPkt->owner = COMPONENT_OPENTCP;
memcpy(&(tempPkt->l3_destinationAdd),&tcp_vars.hisIPv6Address,sizeof(open_addr_t));
prependTCPHeader(tempPkt,
TCP_ACK_YES,
TCP_PSH_NO,
TCP_RST_NO,
TCP_SYN_NO,
TCP_FIN_NO);
forwarding_send(tempPkt);
tcp_change_state(TCP_STATE_ALMOST_CLOSE_WAIT);
} else if (containsControlBits(msg,TCP_ACK_WHATEVER,TCP_RST_NO,TCP_SYN_NO,TCP_FIN_NO)) {
//I receive data, I send ACK
tcp_vars.hisNextSeqNum = (packetfunctions_ntohl((uint8_t*)&(((tcp_ht*)msg->payload)->sequence_number)))+msg->length-sizeof(tcp_ht);
tempPkt = openqueue_getFreePacketBuffer(COMPONENT_OPENTCP);
if (tempPkt==NULL) {
openserial_printError(COMPONENT_OPENTCP,ERR_NO_FREE_PACKET_BUFFER,
(errorparameter_t)0,
(errorparameter_t)0);
openqueue_freePacketBuffer(msg);
return;
}
tempPkt->creator = COMPONENT_OPENTCP;
tempPkt->owner = COMPONENT_OPENTCP;
memcpy(&(tempPkt->l3_destinationAdd),&tcp_vars.hisIPv6Address,sizeof(open_addr_t));
prependTCPHeader(tempPkt,
TCP_ACK_YES,
TCP_PSH_NO,
TCP_RST_NO,
TCP_SYN_NO,
TCP_FIN_NO);
forwarding_send(tempPkt);
packetfunctions_tossHeader(msg,sizeof(tcp_ht));
tcp_vars.dataReceived = msg;
tcp_change_state(TCP_STATE_ALMOST_DATA_RECEIVED);
} else {
opentcp_reset();
openserial_printError(COMPONENT_OPENTCP,ERR_TCP_RESET,
(errorparameter_t)tcp_vars.state,
(errorparameter_t)3);
openqueue_freePacketBuffer(msg);
}
break;
case TCP_STATE_DATA_SENT: //[receive] data
if (containsControlBits(msg,TCP_ACK_YES,TCP_RST_NO,TCP_SYN_NO,TCP_FIN_NO)) {
//I receive ACK, data message sent
switch(tcp_vars.myPort) {
case WKP_TCP_HTTP:
ohlone_sendDone(tcp_vars.dataToSend,E_SUCCESS);
break;
case WKP_TCP_ECHO:
tcpecho_sendDone(tcp_vars.dataToSend,E_SUCCESS);
break;
case WKP_TCP_INJECT:
tcpinject_sendDone(tcp_vars.dataToSend,E_SUCCESS);
break;
case WKP_TCP_DISCARD:
tcpprint_sendDone(tcp_vars.dataToSend,E_SUCCESS);
break;
default:
openserial_printError(COMPONENT_OPENTCP,ERR_UNSUPPORTED_PORT_NUMBER,
(errorparameter_t)tcp_vars.myPort,
(errorparameter_t)3);
break;
}
tcp_vars.dataToSend = NULL;
tcp_change_state(TCP_STATE_ESTABLISHED);
} else if (containsControlBits(msg,TCP_ACK_WHATEVER,TCP_RST_NO,TCP_SYN_NO,TCP_FIN_YES)) {
//I receive FIN[+ACK], I send ACK
switch(tcp_vars.myPort) {
case WKP_TCP_HTTP:
ohlone_sendDone(tcp_vars.dataToSend,E_SUCCESS);
break;
case WKP_TCP_ECHO:
tcpecho_sendDone(tcp_vars.dataToSend,E_SUCCESS);
break;
case WKP_TCP_INJECT:
tcpinject_sendDone(tcp_vars.dataToSend,E_SUCCESS);
break;
case WKP_TCP_DISCARD:
tcpprint_sendDone(tcp_vars.dataToSend,E_SUCCESS);
break;
default:
openserial_printError(COMPONENT_OPENTCP,ERR_UNSUPPORTED_PORT_NUMBER,
(errorparameter_t)tcp_vars.myPort,
(errorparameter_t)4);
break;
}
tcp_vars.dataToSend = NULL;
tcp_vars.hisNextSeqNum = (packetfunctions_ntohl((uint8_t*)&(((tcp_ht*)msg->payload)->sequence_number)))+msg->length-sizeof(tcp_ht)+1;
tempPkt = openqueue_getFreePacketBuffer(COMPONENT_OPENTCP);
if (tempPkt==NULL) {
openserial_printError(COMPONENT_OPENTCP,ERR_NO_FREE_PACKET_BUFFER,
(errorparameter_t)0,
(errorparameter_t)0);
openqueue_freePacketBuffer(msg);
return;
}
tempPkt->creator = COMPONENT_OPENTCP;
tempPkt->owner = COMPONENT_OPENTCP;
memcpy(&(tempPkt->l3_destinationAdd),&tcp_vars.hisIPv6Address,sizeof(open_addr_t));
prependTCPHeader(tempPkt,
TCP_ACK_YES,
TCP_PSH_NO,
TCP_RST_NO,
TCP_SYN_NO,
TCP_FIN_NO);
forwarding_send(tempPkt);
tcp_change_state(TCP_STATE_ALMOST_CLOSE_WAIT);
} else {
opentcp_reset();
openserial_printError(COMPONENT_OPENTCP,ERR_TCP_RESET,
(errorparameter_t)tcp_vars.state,
(errorparameter_t)4);
}
openqueue_freePacketBuffer(msg);
break;
case TCP_STATE_FIN_WAIT_1: //[receive] teardown
if (containsControlBits(msg,TCP_ACK_NO,TCP_RST_NO,TCP_SYN_NO,TCP_FIN_YES)) {
//I receive FIN, I send ACK
tcp_vars.hisNextSeqNum = (packetfunctions_ntohl((uint8_t*)&(((tcp_ht*)msg->payload)->sequence_number)))+1;
tempPkt = openqueue_getFreePacketBuffer(COMPONENT_OPENTCP);
if (tempPkt==NULL) {
openserial_printError(COMPONENT_OPENTCP,ERR_NO_FREE_PACKET_BUFFER,
(errorparameter_t)0,
(errorparameter_t)0);
openqueue_freePacketBuffer(msg);
return;
}
tempPkt->creator = COMPONENT_OPENTCP;
tempPkt->owner = COMPONENT_OPENTCP;
memcpy(&(tempPkt->l3_destinationAdd),&tcp_vars.hisIPv6Address,sizeof(open_addr_t));
prependTCPHeader(tempPkt,
TCP_ACK_YES,
TCP_PSH_NO,
TCP_RST_NO,
TCP_SYN_NO,
TCP_FIN_NO);
forwarding_send(tempPkt);
tcp_change_state(TCP_STATE_ALMOST_CLOSING);
} else if (containsControlBits(msg,TCP_ACK_YES,TCP_RST_NO,TCP_SYN_NO,TCP_FIN_YES)) {
//I receive FIN+ACK, I send ACK
tcp_vars.hisNextSeqNum = (packetfunctions_ntohl((uint8_t*)&(((tcp_ht*)msg->payload)->sequence_number)))+1;
tempPkt = openqueue_getFreePacketBuffer(COMPONENT_OPENTCP);
if (tempPkt==NULL) {
openserial_printError(COMPONENT_OPENTCP,ERR_NO_FREE_PACKET_BUFFER,
(errorparameter_t)0,
(errorparameter_t)0);
openqueue_freePacketBuffer(msg);
return;
}
tempPkt->creator = COMPONENT_OPENTCP;
tempPkt->owner = COMPONENT_OPENTCP;
memcpy(&(tempPkt->l3_destinationAdd),&tcp_vars.hisIPv6Address,sizeof(open_addr_t));
prependTCPHeader(tempPkt,
TCP_ACK_YES,
TCP_PSH_NO,
TCP_RST_NO,
TCP_SYN_NO,
TCP_FIN_NO);
forwarding_send(tempPkt);
tcp_change_state(TCP_STATE_ALMOST_TIME_WAIT);
} else if (containsControlBits(msg,TCP_ACK_YES,TCP_RST_NO,TCP_SYN_NO,TCP_FIN_NO)) {
//I receive ACK, I will receive FIN later
tcp_change_state(TCP_STATE_FIN_WAIT_2);
} else {
opentcp_reset();
openserial_printError(COMPONENT_OPENTCP,ERR_TCP_RESET,
(errorparameter_t)tcp_vars.state,
(errorparameter_t)5);
}
openqueue_freePacketBuffer(msg);
break;
case TCP_STATE_FIN_WAIT_2: //[receive] teardown
if (containsControlBits(msg,TCP_ACK_WHATEVER,TCP_RST_NO,TCP_SYN_NO,TCP_FIN_YES)) {
//I receive FIN[+ACK], I send ACK
tcp_vars.hisNextSeqNum = (packetfunctions_ntohl((uint8_t*)&(((tcp_ht*)msg->payload)->sequence_number)))+1;
tempPkt = openqueue_getFreePacketBuffer(COMPONENT_OPENTCP);
if (tempPkt==NULL) {
openserial_printError(COMPONENT_OPENTCP,ERR_NO_FREE_PACKET_BUFFER,
(errorparameter_t)0,
(errorparameter_t)0);
openqueue_freePacketBuffer(msg);
return;
}
tempPkt->creator = COMPONENT_OPENTCP;
tempPkt->owner = COMPONENT_OPENTCP;
memcpy(&(tempPkt->l3_destinationAdd),&tcp_vars.hisIPv6Address,sizeof(open_addr_t));
prependTCPHeader(tempPkt,
TCP_ACK_YES,
TCP_PSH_NO,
TCP_RST_NO,
TCP_SYN_NO,
TCP_FIN_NO);
forwarding_send(tempPkt);
tcp_change_state(TCP_STATE_ALMOST_TIME_WAIT);
}
openqueue_freePacketBuffer(msg);
break;
case TCP_STATE_CLOSING: //[receive] teardown
if (containsControlBits(msg,TCP_ACK_YES,TCP_RST_NO,TCP_SYN_NO,TCP_FIN_NO)) {
//I receive ACK, I do nothing
tcp_change_state(TCP_STATE_TIME_WAIT);
//TODO implement waiting timer
opentcp_reset();
}
openqueue_freePacketBuffer(msg);
break;
case TCP_STATE_LAST_ACK: //[receive] teardown
if (containsControlBits(msg,TCP_ACK_YES,TCP_RST_NO,TCP_SYN_NO,TCP_FIN_NO)) {
//I receive ACK, I reset
opentcp_reset();
}
openqueue_freePacketBuffer(msg);
break;
default:
openserial_printError(COMPONENT_OPENTCP,ERR_WRONG_TCP_STATE,
(errorparameter_t)tcp_vars.state,
(errorparameter_t)4);
break;
}
}
void opentcp_sendDone(OpenQueueEntry_t* msg, owerror_t error) {
OpenQueueEntry_t* tempPkt;
msg->owner = COMPONENT_OPENTCP;
switch (tcp_vars.state) {
case TCP_STATE_ALMOST_SYN_SENT: //[sendDone] establishement
openqueue_freePacketBuffer(msg);
tcp_change_state(TCP_STATE_SYN_SENT);
break;
case TCP_STATE_ALMOST_SYN_RECEIVED: //[sendDone] establishement
openqueue_freePacketBuffer(msg);
tcp_change_state(TCP_STATE_SYN_RECEIVED);
break;
case TCP_STATE_ALMOST_ESTABLISHED: //[sendDone] establishement
openqueue_freePacketBuffer(msg);
tcp_change_state(TCP_STATE_ESTABLISHED);
switch(tcp_vars.myPort) {
case WKP_TCP_HTTP:
ohlone_connectDone(E_SUCCESS);
break;
case WKP_TCP_ECHO:
tcpecho_connectDone(E_SUCCESS);
break;
case WKP_TCP_INJECT:
tcpinject_connectDone(E_SUCCESS);
break;
case WKP_TCP_DISCARD:
tcpprint_connectDone(E_SUCCESS);
break;
default:
openserial_printError(COMPONENT_OPENTCP,ERR_UNSUPPORTED_PORT_NUMBER,
(errorparameter_t)tcp_vars.myPort,
(errorparameter_t)0);
break;
}
break;
case TCP_STATE_ALMOST_DATA_SENT: //[sendDone] data
tcp_change_state(TCP_STATE_DATA_SENT);
break;
case TCP_STATE_ALMOST_DATA_RECEIVED: //[sendDone] data
openqueue_freePacketBuffer(msg);
tcp_change_state(TCP_STATE_ESTABLISHED);
switch(tcp_vars.myPort) {
case WKP_TCP_HTTP:
ohlone_receive(tcp_vars.dataReceived);
break;
case WKP_TCP_ECHO:
tcpecho_receive(tcp_vars.dataReceived);
break;
case WKP_TCP_INJECT:
tcpinject_receive(tcp_vars.dataReceived);
break;
case WKP_TCP_DISCARD:
tcpprint_receive(tcp_vars.dataReceived);
break;
default:
openserial_printError(COMPONENT_OPENTCP,ERR_UNSUPPORTED_PORT_NUMBER,
(errorparameter_t)tcp_vars.myPort,
(errorparameter_t)1);
openqueue_freePacketBuffer(msg);
tcp_vars.dataReceived = NULL;
break;
}
break;
case TCP_STATE_ALMOST_FIN_WAIT_1: //[sendDone] teardown
openqueue_freePacketBuffer(msg);
tcp_change_state(TCP_STATE_FIN_WAIT_1);
break;
case TCP_STATE_ALMOST_CLOSING: //[sendDone] teardown
openqueue_freePacketBuffer(msg);
tcp_change_state(TCP_STATE_CLOSING);
break;
case TCP_STATE_ALMOST_TIME_WAIT: //[sendDone] teardown
openqueue_freePacketBuffer(msg);
tcp_change_state(TCP_STATE_TIME_WAIT);
//TODO implement waiting timer
opentcp_reset();
break;
case TCP_STATE_ALMOST_CLOSE_WAIT: //[sendDone] teardown
openqueue_freePacketBuffer(msg);
tcp_change_state(TCP_STATE_CLOSE_WAIT);
//I send FIN+ACK
tempPkt = openqueue_getFreePacketBuffer(COMPONENT_OPENTCP);
if (tempPkt==NULL) {
openserial_printError(COMPONENT_OPENTCP,ERR_NO_FREE_PACKET_BUFFER,
(errorparameter_t)0,
(errorparameter_t)0);
openqueue_freePacketBuffer(msg);
return;
}
tempPkt->creator = COMPONENT_OPENTCP;
tempPkt->owner = COMPONENT_OPENTCP;
memcpy(&(tempPkt->l3_destinationAdd),&tcp_vars.hisIPv6Address,sizeof(open_addr_t));
prependTCPHeader(tempPkt,
TCP_ACK_YES,
TCP_PSH_NO,
TCP_RST_NO,
TCP_SYN_NO,
TCP_FIN_YES);
forwarding_send(tempPkt);
tcp_change_state(TCP_STATE_ALMOST_LAST_ACK);
break;
case TCP_STATE_ALMOST_LAST_ACK: //[sendDone] teardown
openqueue_freePacketBuffer(msg);
tcp_change_state(TCP_STATE_LAST_ACK);
break;
default:
openserial_printError(COMPONENT_OPENTCP,ERR_WRONG_TCP_STATE,
(errorparameter_t)tcp_vars.state,
(errorparameter_t)3);
break;
}
}