add comments to more complex structs
add comments to more complex structs

semiotproject/microcoap,i2ot/microcoap,DipSwitch/microcoap,backenklee/microcoap,FablabRobertHoudin/microcoap,marcelx/microcoap,wolfeidau/microcoap,dientaufan/microcoap,semiotproject/microcoap,jakeypoo/microcoap,jiajiuan/microcoap,Lotterleben/microcoap,xgilles/microcoap,1248/microcoap,rsmallegoor/microcoap,cw1204772/microcoap,ximus/microcoap