void testPayload() {
// test for both buffer and dynamic
CoapPDU *pdu = NULL;
uint8_t *buffer[32];
for(int i=0; i<4; i++) {
switch(i) {
case 0:
pdu = new CoapPDU((uint8_t*)buffer,32,0);
break;
case 1:
pdu->reset();
break;
case 2:
pdu = new CoapPDU();
break;
case 3:
pdu->reset();
break;
}
pdu->setType(CoapPDU::COAP_CONFIRMABLE);
pdu->printBin();
pdu->setCode(CoapPDU::COAP_GET);
pdu->setVersion(1);
pdu->printBin();
pdu->setMessageID(0x1234);
pdu->setURI((char*)"test",4);
pdu->printBin();
CU_ASSERT_FATAL(pdu->setPayload(NULL,4)==1);
CU_ASSERT_FATAL(pdu->setPayload((uint8_t*)"test",0)==1);
pdu->setPayload((uint8_t*)"\1\2\3",3);
pdu->printBin();
CU_ASSERT_EQUAL_FATAL(pdu->getPayloadLength(),3);
CU_ASSERT_NSTRING_EQUAL_FATAL(pdu->getPDUPointer(),payloadTestPDUA,pdu->getPDULength());
CU_ASSERT_NSTRING_EQUAL_FATAL(pdu->getPayloadPointer(),"\1\2\3",pdu->getPayloadLength());
DBG("Trying to increase payload size");
pdu->setPayload((uint8_t*)"\4\3\2\1",4);
pdu->printBin();
CU_ASSERT_EQUAL_FATAL(pdu->getPayloadLength(),4);
CU_ASSERT_NSTRING_EQUAL_FATAL(pdu->getPDUPointer(),payloadTestPDUB,pdu->getPDULength());
CU_ASSERT_NSTRING_EQUAL_FATAL(pdu->getPayloadPointer(),"\4\3\2\1",pdu->getPayloadLength());
DBG("Trying to reduce payload size");
pdu->setPayload((uint8_t*)"\1\2",2);
pdu->printBin();
CU_ASSERT_EQUAL_FATAL(pdu->getPayloadLength(),2);
CU_ASSERT_NSTRING_EQUAL_FATAL(pdu->getPDUPointer(),payloadTestPDUC,pdu->getPDULength());
CU_ASSERT_NSTRING_EQUAL_FATAL(pdu->getPayloadPointer(),"\1\2",pdu->getPayloadLength());
if(i%2) {
DBG("%d DELETE",i);
delete pdu;
}
}
}
CoapPDU* HttpMessage::toCoap()
{
CoapPDU* pdu = new CoapPDU();
// Set code
switch (this->_httpCode)
{
case 200:
pdu->setCode(CoapPDU::COAP_CONTENT);
break;
case 415:
pdu->setCode(CoapPDU::COAP_UNSUPPORTED_CONTENT_FORMAT);
break;
default:
pdu->httpStatusToCode(this->_httpCode);
break;
}
// Set payload
uint8_t* data = (uint8_t*) this->_body.c_str();
std::size_t length = this->_body.length();
pdu->setPayload(data, length);
// Set content-type
if (this->_contentType == "application/json")
{
pdu->setContentFormat(CoapPDU::COAP_CONTENT_FORMAT_APP_JSON);
}
else
{
pdu->setContentFormat(CoapPDU::COAP_CONTENT_FORMAT_APP_XML);
}
return pdu;
}
int main() {
DBG_INIT();
DBG_SET_SPEED(115200);
DBG_SET_NEWLINE("\r\n");
// structure for getting address of incoming packets
sockaddr_in fromAddr;
socklen_t fromAddrLen = sizeof(struct sockaddr_in);
memset(&fromAddr,0x00,fromAddrLen);
// connect to cellular network
HuaweiUSBCDMAModem modem(NC, true);
modem.connect(APN,APN_USERNAME,APN_PASSWORD);
// setup socket to remote server
int sockfd = NULL;
// if(!connectToSocketUDP("109.74.199.96", 5683, &sockfd)) {
if(!connectToSocketUDP("123.57.235.186", 5683, &sockfd)) {
DBG("Error connecting to socket");
fail(1);
}
DBG("\"Connected\" to UDP socket");
// construct CoAP packet
CoapPDU *pdu = new CoapPDU();
pdu->setVersion(1);
pdu->setType(CoapPDU::COAP_CONFIRMABLE);
pdu->setCode(CoapPDU::COAP_POST);
pdu->setToken((uint8_t*)"\3\2\1\1",4);
pdu->setURI((char*)"register",8);
#define BUFLEN 128
short messageID = 0;
char buffer[BUFLEN];
MbedJSONValue json;
json["devType"] = "T1";
json["firmwareNo"] = "F1";
json["softVerNo"] = "S4";
json["userDevType"] = "UT1";
json["userSoftVerNo"] = "US2";
json["mobile"] = "15811112222";
json["userHardVerNo"] = "UH1";
json["hardVerNo"] = "H1";
json["devUniqId"] = "q1w2e3r4t5";
string jsonStr = json.serialize();
printf("serialized content = %s\r\n" , jsonStr.c_str());
char *payload = (char *)jsonStr.c_str();
pdu->setPayload((uint8_t*)payload,strlen(payload));
int num = 3;
// send packets to server
while(num--) {
// set PDU parameters
pdu->setMessageID(messageID++);
// send packet
int ret = send(sockfd,pdu->getPDUPointer(),pdu->getPDULength(),0);
if(ret!=pdu->getPDULength()) {
INFO("Error sending packet.");
perror(NULL);
fail(2);
}
INFO("Packet sent");
// receive response
ret = recvfrom(sockfd,&buffer,BUFLEN,0,(struct sockaddr *)&fromAddr,&fromAddrLen);
if(ret==-1) {
INFO("Error receiving data");
fail(3);
}
INFO("Received %d bytes from %s:%d",ret,inet_ntoa(fromAddr.sin_addr),ntohs(fromAddr.sin_port));
if(ret>BUFLEN) {
INFO("PDU too large to fit in pre-allocated buffer");
continue;
}
// reuse the below coap object
CoapPDU *recvPDU = new CoapPDU((uint8_t*)buffer,BUFLEN,BUFLEN);
// validate packet
recvPDU->setPDULength(ret);
if(recvPDU->validate()!=1) {
INFO("Malformed CoAP packet");
fail(4);
}
INFO("Valid CoAP PDU received");
recvPDU->printHuman();
Thread::wait(5000);
}
modem.disconnect();
return true;
}