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@ -111,8 +111,8 @@ void TCP_Task(void)
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ConnectionStateTable[CSTableEntry].Info.SequenceNumberOut += PacketSize;
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TCPHeaderOUT->Checksum = TCP_Checksum16(TCPHeaderOUT, ServerIPAddress,
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ConnectionStateTable[CSTableEntry].RemoteAddress,
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TCPHeaderOUT->Checksum = TCP_Checksum16(TCPHeaderOUT, &ServerIPAddress,
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&ConnectionStateTable[CSTableEntry].RemoteAddress,
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(sizeof(TCP_Header_t) + PacketSize));
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PacketSize += sizeof(TCP_Header_t);
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@ -249,7 +249,7 @@ uint8_t TCP_GetPortState(const uint16_t Port)
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* \return Boolean true if the connection was updated or created, false otherwise (no more space in the connection state table)
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*/
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bool TCP_SetConnectionState(const uint16_t Port,
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const IP_Address_t RemoteAddress,
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const IP_Address_t* RemoteAddress,
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const uint16_t RemotePort,
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const uint8_t State)
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{
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@ -259,7 +259,7 @@ bool TCP_SetConnectionState(const uint16_t Port,
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{
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/* Find port entry in the table */
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if ((ConnectionStateTable[CSTableEntry].Port == Port) &&
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IP_COMPARE(&ConnectionStateTable[CSTableEntry].RemoteAddress, &RemoteAddress) &&
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IP_COMPARE(&ConnectionStateTable[CSTableEntry].RemoteAddress, RemoteAddress) &&
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ConnectionStateTable[CSTableEntry].RemotePort == RemotePort)
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{
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ConnectionStateTable[CSTableEntry].State = State;
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@ -273,7 +273,7 @@ bool TCP_SetConnectionState(const uint16_t Port,
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if (ConnectionStateTable[CSTableEntry].State == TCP_Connection_Closed)
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{
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ConnectionStateTable[CSTableEntry].Port = Port;
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ConnectionStateTable[CSTableEntry].RemoteAddress = RemoteAddress;
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ConnectionStateTable[CSTableEntry].RemoteAddress = *RemoteAddress;
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ConnectionStateTable[CSTableEntry].RemotePort = RemotePort;
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ConnectionStateTable[CSTableEntry].State = State;
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return true;
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@ -292,7 +292,7 @@ bool TCP_SetConnectionState(const uint16_t Port,
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* \return A value from the \ref TCP_ConnectionStates_t enum
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*/
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uint8_t TCP_GetConnectionState(const uint16_t Port,
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const IP_Address_t RemoteAddress,
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const IP_Address_t* RemoteAddress,
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const uint16_t RemotePort)
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{
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/* Note, Port number should be specified in BIG endian to simplify network code */
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@ -301,7 +301,7 @@ uint8_t TCP_GetConnectionState(const uint16_t Port,
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{
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/* Find port entry in the table */
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if ((ConnectionStateTable[CSTableEntry].Port == Port) &&
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IP_COMPARE(&ConnectionStateTable[CSTableEntry].RemoteAddress, &RemoteAddress) &&
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IP_COMPARE(&ConnectionStateTable[CSTableEntry].RemoteAddress, RemoteAddress) &&
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ConnectionStateTable[CSTableEntry].RemotePort == RemotePort)
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{
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@ -321,7 +321,7 @@ uint8_t TCP_GetConnectionState(const uint16_t Port,
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* \return ConnectionInfo structure of the connection if found, NULL otherwise
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*/
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TCP_ConnectionInfo_t* TCP_GetConnectionInfo(const uint16_t Port,
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const IP_Address_t RemoteAddress,
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const IP_Address_t* RemoteAddress,
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const uint16_t RemotePort)
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{
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/* Note, Port number should be specified in BIG endian to simplify network code */
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@ -330,7 +330,7 @@ TCP_ConnectionInfo_t* TCP_GetConnectionInfo(const uint16_t Port,
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{
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/* Find port entry in the table */
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if ((ConnectionStateTable[CSTableEntry].Port == Port) &&
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IP_COMPARE(&ConnectionStateTable[CSTableEntry].RemoteAddress, &RemoteAddress) &&
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IP_COMPARE(&ConnectionStateTable[CSTableEntry].RemoteAddress, RemoteAddress) &&
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ConnectionStateTable[CSTableEntry].RemotePort == RemotePort)
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{
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return &ConnectionStateTable[CSTableEntry].Info;
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@ -370,12 +370,12 @@ int16_t TCP_ProcessTCPPacket(void* IPHeaderInStart,
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{
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/* Detect SYN from host to start a connection */
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if (TCPHeaderIN->Flags & TCP_FLAG_SYN)
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TCP_SetConnectionState(TCPHeaderIN->DestinationPort, IPHeaderIN->SourceAddress, TCPHeaderIN->SourcePort, TCP_Connection_Listen);
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TCP_SetConnectionState(TCPHeaderIN->DestinationPort, &IPHeaderIN->SourceAddress, TCPHeaderIN->SourcePort, TCP_Connection_Listen);
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/* Detect RST from host to abort existing connection */
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if (TCPHeaderIN->Flags & TCP_FLAG_RST)
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{
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if (TCP_SetConnectionState(TCPHeaderIN->DestinationPort, IPHeaderIN->SourceAddress,
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if (TCP_SetConnectionState(TCPHeaderIN->DestinationPort, &IPHeaderIN->SourceAddress,
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TCPHeaderIN->SourcePort, TCP_Connection_Closed))
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{
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TCPHeaderOUT->Flags = (TCP_FLAG_RST | TCP_FLAG_ACK);
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@ -385,18 +385,18 @@ int16_t TCP_ProcessTCPPacket(void* IPHeaderInStart,
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else
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{
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/* Process the incoming TCP packet based on the current connection state for the sender and port */
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switch (TCP_GetConnectionState(TCPHeaderIN->DestinationPort, IPHeaderIN->SourceAddress, TCPHeaderIN->SourcePort))
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switch (TCP_GetConnectionState(TCPHeaderIN->DestinationPort, &IPHeaderIN->SourceAddress, TCPHeaderIN->SourcePort))
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{
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case TCP_Connection_Listen:
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if (TCPHeaderIN->Flags == TCP_FLAG_SYN)
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{
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/* SYN connection starts a connection with a peer */
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if (TCP_SetConnectionState(TCPHeaderIN->DestinationPort, IPHeaderIN->SourceAddress,
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if (TCP_SetConnectionState(TCPHeaderIN->DestinationPort, &IPHeaderIN->SourceAddress,
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TCPHeaderIN->SourcePort, TCP_Connection_SYNReceived))
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{
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TCPHeaderOUT->Flags = (TCP_FLAG_SYN | TCP_FLAG_ACK);
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ConnectionInfo = TCP_GetConnectionInfo(TCPHeaderIN->DestinationPort, IPHeaderIN->SourceAddress, TCPHeaderIN->SourcePort);
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ConnectionInfo = TCP_GetConnectionInfo(TCPHeaderIN->DestinationPort, &IPHeaderIN->SourceAddress, TCPHeaderIN->SourcePort);
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ConnectionInfo->SequenceNumberIn = (SwapEndian_32(TCPHeaderIN->SequenceNumber) + 1);
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ConnectionInfo->SequenceNumberOut = 0;
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@ -416,10 +416,10 @@ int16_t TCP_ProcessTCPPacket(void* IPHeaderInStart,
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{
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/* ACK during the connection process completes the connection to a peer */
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TCP_SetConnectionState(TCPHeaderIN->DestinationPort, IPHeaderIN->SourceAddress,
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TCP_SetConnectionState(TCPHeaderIN->DestinationPort, &IPHeaderIN->SourceAddress,
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TCPHeaderIN->SourcePort, TCP_Connection_Established);
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ConnectionInfo = TCP_GetConnectionInfo(TCPHeaderIN->DestinationPort, IPHeaderIN->SourceAddress,
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ConnectionInfo = TCP_GetConnectionInfo(TCPHeaderIN->DestinationPort, &IPHeaderIN->SourceAddress,
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TCPHeaderIN->SourcePort);
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ConnectionInfo->SequenceNumberOut++;
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@ -434,10 +434,10 @@ int16_t TCP_ProcessTCPPacket(void* IPHeaderInStart,
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TCPHeaderOUT->Flags = (TCP_FLAG_FIN | TCP_FLAG_ACK);
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PacketResponse = true;
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TCP_SetConnectionState(TCPHeaderIN->DestinationPort, IPHeaderIN->SourceAddress,
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TCP_SetConnectionState(TCPHeaderIN->DestinationPort, &IPHeaderIN->SourceAddress,
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TCPHeaderIN->SourcePort, TCP_Connection_CloseWait);
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ConnectionInfo = TCP_GetConnectionInfo(TCPHeaderIN->DestinationPort, IPHeaderIN->SourceAddress,
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ConnectionInfo = TCP_GetConnectionInfo(TCPHeaderIN->DestinationPort, &IPHeaderIN->SourceAddress,
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TCPHeaderIN->SourcePort);
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ConnectionInfo->SequenceNumberIn++;
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@ -445,7 +445,7 @@ int16_t TCP_ProcessTCPPacket(void* IPHeaderInStart,
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}
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else if ((TCPHeaderIN->Flags == TCP_FLAG_ACK) || (TCPHeaderIN->Flags == (TCP_FLAG_ACK | TCP_FLAG_PSH)))
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{
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ConnectionInfo = TCP_GetConnectionInfo(TCPHeaderIN->DestinationPort, IPHeaderIN->SourceAddress,
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ConnectionInfo = TCP_GetConnectionInfo(TCPHeaderIN->DestinationPort, &IPHeaderIN->SourceAddress,
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TCPHeaderIN->SourcePort);
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/* Check if the buffer is currently in use either by a buffered data to send, or receive */
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@ -491,7 +491,7 @@ int16_t TCP_ProcessTCPPacket(void* IPHeaderInStart,
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break;
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case TCP_Connection_Closing:
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ConnectionInfo = TCP_GetConnectionInfo(TCPHeaderIN->DestinationPort, IPHeaderIN->SourceAddress,
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ConnectionInfo = TCP_GetConnectionInfo(TCPHeaderIN->DestinationPort, &IPHeaderIN->SourceAddress,
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TCPHeaderIN->SourcePort);
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TCPHeaderOUT->Flags = (TCP_FLAG_ACK | TCP_FLAG_FIN);
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@ -499,14 +499,14 @@ int16_t TCP_ProcessTCPPacket(void* IPHeaderInStart,
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ConnectionInfo->Buffer.InUse = false;
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TCP_SetConnectionState(TCPHeaderIN->DestinationPort, IPHeaderIN->SourceAddress,
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TCP_SetConnectionState(TCPHeaderIN->DestinationPort, &IPHeaderIN->SourceAddress,
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TCPHeaderIN->SourcePort, TCP_Connection_FINWait1);
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break;
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case TCP_Connection_FINWait1:
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if (TCPHeaderIN->Flags == (TCP_FLAG_FIN | TCP_FLAG_ACK))
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{
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ConnectionInfo = TCP_GetConnectionInfo(TCPHeaderIN->DestinationPort, IPHeaderIN->SourceAddress,
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ConnectionInfo = TCP_GetConnectionInfo(TCPHeaderIN->DestinationPort, &IPHeaderIN->SourceAddress,
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TCPHeaderIN->SourcePort);
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TCPHeaderOUT->Flags = TCP_FLAG_ACK;
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@ -515,12 +515,12 @@ int16_t TCP_ProcessTCPPacket(void* IPHeaderInStart,
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ConnectionInfo->SequenceNumberIn++;
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ConnectionInfo->SequenceNumberOut++;
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TCP_SetConnectionState(TCPHeaderIN->DestinationPort, IPHeaderIN->SourceAddress,
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TCP_SetConnectionState(TCPHeaderIN->DestinationPort, &IPHeaderIN->SourceAddress,
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TCPHeaderIN->SourcePort, TCP_Connection_Closed);
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}
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else if (TCPHeaderIN->Flags == TCP_FLAG_ACK)
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{
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TCP_SetConnectionState(TCPHeaderIN->DestinationPort, IPHeaderIN->SourceAddress,
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TCP_SetConnectionState(TCPHeaderIN->DestinationPort, &IPHeaderIN->SourceAddress,
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TCPHeaderIN->SourcePort, TCP_Connection_FINWait2);
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}
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@ -528,7 +528,7 @@ int16_t TCP_ProcessTCPPacket(void* IPHeaderInStart,
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case TCP_Connection_FINWait2:
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if (TCPHeaderIN->Flags == (TCP_FLAG_FIN | TCP_FLAG_ACK))
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{
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ConnectionInfo = TCP_GetConnectionInfo(TCPHeaderIN->DestinationPort, IPHeaderIN->SourceAddress,
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ConnectionInfo = TCP_GetConnectionInfo(TCPHeaderIN->DestinationPort, &IPHeaderIN->SourceAddress,
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TCPHeaderIN->SourcePort);
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TCPHeaderOUT->Flags = TCP_FLAG_ACK;
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@ -537,7 +537,7 @@ int16_t TCP_ProcessTCPPacket(void* IPHeaderInStart,
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ConnectionInfo->SequenceNumberIn++;
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ConnectionInfo->SequenceNumberOut++;
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TCP_SetConnectionState(TCPHeaderIN->DestinationPort, IPHeaderIN->SourceAddress,
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TCP_SetConnectionState(TCPHeaderIN->DestinationPort, &IPHeaderIN->SourceAddress,
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TCPHeaderIN->SourcePort, TCP_Connection_Closed);
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}
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@ -545,7 +545,7 @@ int16_t TCP_ProcessTCPPacket(void* IPHeaderInStart,
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case TCP_Connection_CloseWait:
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if (TCPHeaderIN->Flags == TCP_FLAG_ACK)
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{
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TCP_SetConnectionState(TCPHeaderIN->DestinationPort, IPHeaderIN->SourceAddress,
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TCP_SetConnectionState(TCPHeaderIN->DestinationPort, &IPHeaderIN->SourceAddress,
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TCPHeaderIN->SourcePort, TCP_Connection_Closed);
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}
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@ -563,7 +563,7 @@ int16_t TCP_ProcessTCPPacket(void* IPHeaderInStart,
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/* Check if we need to respond to the sent packet */
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if (PacketResponse)
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{
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ConnectionInfo = TCP_GetConnectionInfo(TCPHeaderIN->DestinationPort, IPHeaderIN->SourceAddress,
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ConnectionInfo = TCP_GetConnectionInfo(TCPHeaderIN->DestinationPort, &IPHeaderIN->SourceAddress,
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TCPHeaderIN->SourcePort);
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TCPHeaderOUT->SourcePort = TCPHeaderIN->DestinationPort;
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@ -581,8 +581,8 @@ int16_t TCP_ProcessTCPPacket(void* IPHeaderInStart,
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TCPHeaderOUT->Checksum = 0;
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TCPHeaderOUT->Reserved = 0;
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TCPHeaderOUT->Checksum = TCP_Checksum16(TCPHeaderOUT, IPHeaderIN->DestinationAddress,
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IPHeaderIN->SourceAddress, sizeof(TCP_Header_t));
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TCPHeaderOUT->Checksum = TCP_Checksum16(TCPHeaderOUT, &IPHeaderIN->DestinationAddress,
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&IPHeaderIN->SourceAddress, sizeof(TCP_Header_t));
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return sizeof(TCP_Header_t);
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}
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@ -601,8 +601,8 @@ int16_t TCP_ProcessTCPPacket(void* IPHeaderInStart,
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* \return A 16-bit TCP checksum value
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*/
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static uint16_t TCP_Checksum16(void* TCPHeaderOutStart,
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const IP_Address_t SourceAddress,
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const IP_Address_t DestinationAddress,
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const IP_Address_t* SourceAddress,
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const IP_Address_t* DestinationAddress,
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uint16_t TCPOutSize)
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{
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uint32_t Checksum = 0;
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@ -610,10 +610,10 @@ static uint16_t TCP_Checksum16(void* TCPHeaderOutStart,
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/* TCP/IP checksums are the addition of the one's compliment of each word including the IP pseudo-header,
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complimented */
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Checksum += ((uint16_t*)&SourceAddress)[0];
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Checksum += ((uint16_t*)&SourceAddress)[1];
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Checksum += ((uint16_t*)&DestinationAddress)[0];
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Checksum += ((uint16_t*)&DestinationAddress)[1];
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Checksum += ((uint16_t*)SourceAddress)[0];
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Checksum += ((uint16_t*)SourceAddress)[1];
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Checksum += ((uint16_t*)DestinationAddress)[0];
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Checksum += ((uint16_t*)DestinationAddress)[1];
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Checksum += SwapEndian_16(PROTOCOL_TCP);
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Checksum += SwapEndian_16(TCPOutSize);
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