Ephemeral port range 1024..5000 exhausted, all ports occupied.

[Mohsen Sichani]

Hello All

I am using traci-launchd example in INETMANET with some modification which I will explain later, but unfortunately when I use TCP, I get the following error in OMNET,everything works fine with UDP, Any help is highly apprectiated.

Regards

Mohsen

<!> Error in module (TCP) scenario.host[6].tcp (id=156) at event #44635275, t=134.396103753775: Model error: Ephemeral port range 1024..5000 exhausted, all ports occupied.

TRAPPING on the exception above, due to a debug-on-errors=true configuration option. Is your debugger ready?

the error in sumo-launchd:

Seed is 0

Finding free port number...

Claiming lock on port

...found port 49116

Starting SUMO (sumo -c map4.sumo.cfg) on port 49116, seed 0

Connecting to SUMO (sumo -c map4.sumo.cfg) on port 49116 (try 1)

Error ([Errno 111] Connection refused)

Connecting to SUMO (sumo -c map4.sumo.cfg) on port 49116 (try 2)

Error ([Errno 111] Connection refused)

Connecting to SUMO (sumo -c map4.sumo.cfg) on port 49116 (try 3)

Error ([Errno 111] Connection refused)

Connecting to SUMO (sumo -c map4.sumo.cfg) on port 49116 (try 4)

Error ([Errno 111] Connection refused)

Connecting to SUMO (sumo -c map4.sumo.cfg) on port 49116 (try 5)

Releasing lock on port

Starting proxy mode

Done with proxy mode

Done with proxy mode, killing SUMO

Done running SUMO

Cleaning up

Result: "<?xml version="1.0"?>

<status>

<exit-code>1</exit-code>

<start>1420946880</start>

<end>1420947330</end>

<status>Exited with error code 1</status>

<stdout><![CDATA[Loading configuration... done.

Step #134.00]]></stdout>0.00*RT, ~149000.00UPS, vehicles TOT 149 ACT 149)     

<stderr><![CDATA[Error: tcpip::Socket::recvAndCheck @ recv: peer shutdown

Quitting (on error).

]]></stderr>

</status>

"

Closing connection from 127.0.0.1 on port 60275

my ini settings are :

**.startTime  = 90s

**.stopTime =2800s

**.host[0..7].hasTcp = true

**.host[6].numTcpApps =3

**.host[6].tcpApp[*].typename = "TCPBasicClientApp"

**.host[6].tcpApp[*].numRequestsPerSession =1

**.host[6].tcpApp[*].thinkTime = 0s

**.host[6].tcpApp[*].idleInterval =0s

**.host[6].tcpApp[*].requestLength = 35B

**.host[6].tcpApp[*].replyLength = 1050B

**.tcpApp[*].dataTransferMode = "object"

##Client-server 0

**.host[6].tcpApp[0].localPort = 80

**.host[6].tcpApp[0].connectAddress = "host[0]"

**.host[6].tcpApp[0].connectPort = 80

##Client-server 1

**.host[6].tcpApp[1].localPort = 81

**.host[6].tcpApp[1].connectAddress = "host[1]"

**.host[6].tcpApp[1].connectPort = 81

#Client-server 2

**.host[6].tcpApp[2].localPort = 82

**.host[6].tcpApp[2].connectAddress = "host[2]"

**.host[6].tcpApp[2].connectPort = 82

#server 0

**.host[0].numTcpApps  = 3

**.host[0].tcpApp[*].typename = "TCPGenericSrvApp"

**.host[0].tcpApp[0].localPort = 80

**.host[0].tcpApp[1].localPort = 81

**.host[0].tcpApp[2].localPort = 82

#Server1

**.host[1].numTcpApps  = 3

**.host[1].tcpApp[*].typename = "TCPGenericSrvApp"

**.host[1].tcpApp[0].localPort = 80

**.host[1].tcpApp[1].localPort = 81

**.host[1].tcpApp[2].localPort = 82

#Server2

**.host[2].numTcpApps  = 3

**.host[2].tcpApp[*].typename = "TCPGenericSrvApp"

**.host[2].tcpApp[0].localPort = 80

**.host[2].tcpApp[1].localPort = 81

**.host[2].tcpApp[2].localPort = 82

[Mohsen Sichani]

Hi all

I checked TCP.cc class and I did not find out a lot.This errors is related to the following codes which mean all ports are occupied, but I can not understand why?

ushort TCP::getEphemeralPort()
	{
	// start at the last allocated port number + 1, and search for an unused one
	ushort searchUntil = lastEphemeralPort++;
	if (lastEphemeralPort == EPHEMERAL_PORTRANGE_END) // wrap
	lastEphemeralPort = EPHEMERAL_PORTRANGE_START;
	while (usedEphemeralPorts.find(lastEphemeralPort) != usedEphemeralPorts.end())
	{
	if (lastEphemeralPort == searchUntil) // got back to starting point?
	error("Ephemeral port range %d..%d exhausted, all ports occupied", EPHEMERAL_PORTRANGE_START, EPHEMERAL_PORTRANGE_END);
	lastEphemeralPort++;
	if (lastEphemeralPort == EPHEMERAL_PORTRANGE_END) // wrap
	lastEphemeralPort = EPHEMERAL_PORTRANGE_START;
	}
	// found a free one, return it
	return lastEphemeralPort;
	}

The modification Which I made

module Car extends WirelessHost

{

//In this module I eliminated the traci-udp submodule, and also eliminated mobility submodule from WirelessHost .

   parameters:

        @node();

        networkLayer.configurator.networkConfiguratorModule = "";

        @display("i=device/cellphone");

        string LinkLayerType = default("Ieee80211NicMesh");

        wlan[*].typename = LinkLayerType;

        IPForward = default(true);

        networkLayer.configurator.networkConfiguratorModule = default("");

        string routingProtocol @enum("AODVUU","DYMOUM","DYMO","DSRUU","OLSR","OLSR_ETX","DSDV_2","Batman") = default("");  // used mobile routing protocol. see: inet.networklayer.manetrouting

    submodules:

        autoconfigurator: HostAutoConfigurator2 {

            @display("p=101,225");

        }

        manetrouting: <routingProtocol> like IManetRouting if routingProtocol != "" &&  LinkLayerType != "Ieee80211NicMesh" {

            @display("p=522,307");

        }

      

        mobility: TraCIMobility {

            parameters:

                @display("p=60,459");

        }

    connections:

        networkLayer.transportOut++ --> manetrouting.from_ip if routingProtocol != "";

        networkLayer.transportIn++ <-- manetrouting.to_ip if routingProtocol != "";

}

[Alfonso Ariza Quintana]

I suspect that your application is opining a TCP port every time that it sends a packet but it never closes the opened ports.

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[Mohsen Sichani]

Dear Alfonso

I would like to appreciate all of your support and many thanks for your consideration. Unfortunately, I could not find the problem. Since, I did not do any modification in any of the TCP source codes, I guess it might be related to Sumo-launchd.py. I changed all ports in my ini file to be greater than 50000 but still I get the same error Ephemeral port range 1024..5000 exhausted, all ports occupied",

 I think sumo-launchd scan all port to find an open port so the problem might be related to that one, I cc this message to Chrisotph (Dr. Sommer) and I hope that he and you kindly could help me to come up with a solution.

mohsen@mohsen-OptiPlex-990:~/Omnetworkspace5jan/inetmanet-2.0-inetmanet-2.2/etc$ ./sumo-launchd.py -vv -c sumo

Logging to /tmp/sumo-launchd.log

Listening on port 9999

Connection from 127.0.0.1 on port 55353

Handling connection from 127.0.0.1 on port 55353

Got TraCI message of length 2

Got TraCI command of length 1

Got TraCI command 0x0

Got CMD_GETVERSION

Got TraCI message of length 316

Got TraCI command of length 311

Got TraCI command 0x75

Got CMD_FILE_SEND for "sumo-launchd.launch.xml"

Got CMD_FILE_SEND with data "<launch>

  <copy file="map4.net.xml"/>

  <copy file="map4.rou.xml"/>

  <copy file="map4.poly.xml"/>

  <copy file="map4.sumo.cfg" type="config"/>

  <basedir path="/home/mohsen/Omnetworkspace5jan/inetmanet-2.0-inetmanet-2.2/examples/traci_launchd/"/>

  <seed value="0"/>

</launch>

"

Creating temporary directory...

Temporary dir is /tmp/sumo-launchd-tmp-D6uI4B

Base dir is /home/mohsen/Omnetworkspace5jan/inetmanet-2.0-inetmanet-2.2/examples/traci_launchd/

Seed is 0

Finding free port number...

Claiming lock on port

...found port 54587

Starting SUMO (sumo -c map4.sumo.cfg) on port 54587, seed 0

Connecting to SUMO (sumo -c map4.sumo.cfg) on port 54587 (try 1)

Error ([Errno 111] Connection refused)

Connecting to SUMO (sumo -c map4.sumo.cfg) on port 54587 (try 2)

Error ([Errno 111] Connection refused)

Connecting to SUMO (sumo -c map4.sumo.cfg) on port 54587 (try 3)

Error ([Errno 111] Connection refused)

Connecting to SUMO (sumo -c map4.sumo.cfg) on port 54587 (try 4)

Error ([Errno 111] Connection refused)

Connecting to SUMO (sumo -c map4.sumo.cfg) on port 54587 (try 5)

Releasing lock on port

Starting proxy mode

Done with proxy mode

Done with proxy mode, killing SUMO

Done running SUMO

Cleaning up

Result: "<?xml version="1.0"?>

<status>

<exit-code>1</exit-code>

<start>1421101524</start>

<end>1421102239</end>

<status>Exited with error code 1</status>

<stdout><![CDATA[Loading configuration... done.

Step #598.00]]></stdout>0.00*RT, ~94000.00UPS, vehicles TOT 149 ACT 94)       

<stderr><![CDATA[Error: tcpip::Socket::recvAndCheck @ recv: peer shutdown

Quitting (on error).

]]></stderr>

</status>

"

Closing connection from 127.0.0.1 on port 55353

[Mohsen Sichani]

Dear Christoph and Alfonso

I think I found the problem, it was related to the values for these two parameters:

thinkTime 

idleInterval

As soon as I increased them, the problem solved.

Thanks once again for your thoughtfulness.

Cheers

Mohsen

[Danh Le Dinh]

Hi Mohsen,
I got the same error when doing simulation with TCPBasicApp module. So what values did you set to the two parameters? Even though I set the two parameters at 5s, but the error still remains. So I just think that it is not for setting of these two parameters, but still not think of any reason. What other reason/ solution you may think of if that is not for setting of two parameters?
Thank you very much!
Best,
Danh