Iot sdk thesis

Resolving the UNIX dependency: 
To make this function compatible on SODAQ SARA, the 
following changes had to be made: 
•
Change the parameters passed: remove 
const struct sockaddr * addr, size_t 
addrLen
,
add 
Sodaq_nbIOT * nbIOT, char * remoteIpStr, uint16_t port
Design Decision:

The removed parameter 

sockaddr * addr
requires UNIX library 
 
, the purpose of which is to hold the remote IP address. To serve this 
purpose, we pass 
char * remoteIpStr 
and 
uint16_t port
which can sufficiently 
define the remote server location. A pointer to variable is passed so that we can set the 
appropriate SODAQ NB-IoT API compliant fields in the to-be returned connection 
pointer. 
•
Remove the lines that use removed parameters and replace them with new equivalents 
•
Set the Sodaq_nbIOT variable of newly created connection to the address pointer to by 
the variable passed as parameter 

---

61 
dtls_connection_t * connection_new_incoming(dtls_connection_t * connList,
int
sock,
Sodaq_nbIOT * nbIOT, 
char
* remoteIpStr, 
uint16_t
port) 
{ 
dtls_connection_t * connP; 
connP = (dtls_connection_t *)malloc(
sizeof
(dtls_connection_t)); 
if
(connP != 
nullptr
) 
{
memset(connP, 
0
, 
sizeof
(dtls_connection_t)); 
//Fills connP with 0s 
// memcpy(&(connP->addr), addr, addrLen);
// connP->addrLen = addrLen;
// connP->next = connList;
int
remoteIpLen = strlen(remoteIpStr)+
1
; 
//Added
connP->remoteIpStr = (
char
*)malloc(remoteIpLen); 
//Added
strncpy(connP->remoteIpStr, remoteIpStr, remoteIpLen); 
//Added
//Added for SODAQ, set the nbIOT object of new connection as the object 
passed as parameter
connP->nbIOT = nbIOT;
/*
*other source lines* 
*/
//connP->dtlsSession->addr.sin6 = connP->remoteIpStr;
//connP->dtlsSession->addr.sin = connP->remoteIpStr; 
connP->dtlsSession->addr.remoteIpStr = connP->remoteIpStr; 
//Added for 
SODAQ
connP->dtlsSession->size = remoteIpLen; 
/* 
*other source lines* 
*/
} 
return
connP; 
} 
/* -----------------------------------------------------------------------------*/

---

62 
/* Compare ConnList->addr with addr until they match, and return connList address 
if they are same, else return NULL */
dtls_connection_t * connection_find(dtls_connection_t * connList, 
const
struct
sockaddr_storage * addr, 
size_t addrLen) 
{ 
dtls_connection_t * connP; 
connP = connList; 
while
(connP != 
NULL
) 
{
/* Compare the passed address parameter with the address field in the 
passed connection parameter, return the currently loaded connection if they 
match*/
if
(
sockaddr_cmp
((
struct
sockaddr
*) (&connP->addr),(
struct
sockaddr
*) 
addr))
return
connP; 
connP = connP->next; 
} 
return
connP; 
}