GitHub/paho.mqtt-sn.embedded-c
1
0
Fork 0
mirror of https://github.com/eclipse/paho.mqtt-sn.embedded-c.git synced 2025-12-16 08:56:51 +01:00
Code Issues Projects Releases Wiki Activity

Add a new function to set TTL/Hops of SensorNetwork(UDP and UDP6) #175

Browse Source 
Parameters to set them in the gateway.conf,
MulticastTTL=1 for UDP
GatewayUDP6Hops=1 for UDP6

Signed-off-by: tomoaki <tomoaki@tomy-tech.com>
This commit is contained in:
tomoaki
2020-02-11 18:30:33 +09:00
parent 768123b76f
commit b8129d6781
7 changed files with 48 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
MQTTSNGateway/src/linux/udp/SensorNetwork.cpp
View File

@@ -185,7 +185,7 @@ int SensorNetwork::initialize(void)
uint16_t multicastPortNo = 0;
uint16_t unicastPortNo = 0;
string ip;
unsigned int ttl = 1;
/*
* theProcess->getParam( ) copies
* a text specified by "Key" into param[] from the Gateway.conf
@@ -216,9 +216,15 @@ int SensorNetwork::initialize(void)
_description += " Gateway Port ";
_description += param;
}
if (theProcess->getParam("MulticastTTL", param) == 0)
{
ttl = atoi(param);
_description += " TTL: ";
_description += param;
}
/* Prepare UDP sockets */
return UDPPort::open(ip.c_str(), multicastPortNo, unicastPortNo);
return UDPPort::open(ip.c_str(), multicastPortNo, unicastPortNo, ttl);
}
const char* SensorNetwork::getDescription(void)
@@ -261,7 +267,7 @@ void UDPPort::close(void)
}
}
int UDPPort::open(const char* ipAddress, uint16_t multiPortNo, uint16_t uniPortNo)
int UDPPort::open(const char* ipAddress, uint16_t multiPortNo, uint16_t uniPortNo, unsigned int ttl)
{
char loopch = 0;
const int reuse = 1;
@@ -275,6 +281,7 @@ int UDPPort::open(const char* ipAddress, uint16_t multiPortNo, uint16_t uniPortN
uint32_t ip = inet_addr(ipAddress);
_grpAddr.setAddress(ip, htons(multiPortNo));
_clientAddr.setAddress(ip, htons(uniPortNo));
_ttl = ttl;
/*------ Create unicast socket --------*/
_sockfdUnicast = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
@@ -342,6 +349,13 @@ int UDPPort::open(const char* ipAddress, uint16_t multiPortNo, uint16_t uniPortN
return -1;
}
if (setsockopt(_sockfdMulticast, IPPROTO_IP, IP_MULTICAST_TTL, &ttl,sizeof(ttl)) < 0)
{
D_NWSTACK("error Multicast IP_ADD_MEMBERSHIP in UDPPort::open\n");
close();
return -1;
}
if (setsockopt(_sockfdUnicast, IPPROTO_IP, IP_ADD_MEMBERSHIP, &mreq, sizeof(mreq)) < 0)
{
D_NWSTACK("error Unicast IP_ADD_MEMBERSHIP in UDPPort::open\n");