/// Attempts to parse a packet from the given Socket::Buffer.
/// Returns true if successful, removing the parsed part from the buffer.
/// Returns false if invalid or not enough data is in the buffer.
/// \arg buffer The Socket::Buffer to attempt to parse.
bool DTSC::Stream::parsePacket(Socket::Buffer & buffer) {
uint32_t len;
static bool syncing = false;
if (buffer.available(8)) {
std::string header_bytes = buffer.copy(8);
if (memcmp(header_bytes.c_str(), DTSC::Magic_Header, 4) == 0) {
len = ntohl(((uint32_t *)header_bytes.c_str())[1]);
if (!buffer.available(len + 8)) {
return false;
}
unsigned int i = 0;
std::string wholepacket = buffer.remove(len + 8);
JSON::Value meta;
JSON::fromDTMI((unsigned char *)wholepacket.c_str() + 8, len, i, meta);
addMeta(meta);
//recursively calls itself until failure or data packet instead of header
return parsePacket(buffer);
}
int version = 0;
if (memcmp(header_bytes.c_str(), DTSC::Magic_Packet, 4) == 0) {
version = 1;
}
if (memcmp(header_bytes.c_str(), DTSC::Magic_Packet2, 4) == 0) {
version = 2;
}
if (version) {
len = ntohl(((uint32_t *)header_bytes.c_str())[1]);
if (!buffer.available(len + 8)) {
return false;
}
JSON::Value newPack;
unsigned int i = 0;
std::string wholepacket = buffer.remove(len + 8);
if (version == 1) {
JSON::fromDTMI((unsigned char *)wholepacket.c_str() + 8, len, i, newPack);
}
if (version == 2) {
JSON::fromDTMI2((unsigned char *)wholepacket.c_str() + 8, len, i, newPack);
}
addPacket(newPack);
syncing = false;
return true;
}
#if DEBUG >= DLVL_WARN
if (!syncing) {
DEBUG_MSG(DLVL_WARN, "Invalid DTMI data detected - syncing");
syncing = true;
}
#endif
buffer.get().clear();
}
return false;
}
