I am having some problems with TCP in VACaMobil.
I am using two TCP modules built up in Inet: TCPBasicClientApp and TCPEchoApp.
The former works as a client and the former works as a server.
The number of cars (the module name is "coche") in the simulation is 100, and there are five concurrent transmissions:
CLIENT SERVER
Car 0 --> Car 99
Car 1 --> Car 98
Car 2 --> Car 97
Car 3 --> Car 96
Car 4 --> Car 95
I am also using three routing protocols: AODV, DYMO and OLSR.
However, regardless of the configuration that I run, errors like this ocurr in the simulation:
Error in module (TCPBasicClientApp) Highway.coche[*].tcpApp[0] (id = 35) at event #49519, t = 166: IPvXAddressResolver: module 'coche[98]' not found.
In this case, using AODV, the car 1 cannot communicate with the car 98. I learned that VACaMobil, after a time, deletes some cars while it is creating others beyond 100,
such as "coche[110]", "coche[115]", etc.
I don't understand why it keeps deleting and creating nodes; I thought that VACaMobil really generated a constant number of vehicles.
How can I fix this? Any help is appreciated.
Here is the omnetpp.ini:
[General]
network = Highway
debug-on-errors = false
cmdenv-express-mode = true
cmdenv-autoflush = true
cmdenv-status-frequency = 10000000s
#repeat = 10
tkenv-plugin-path = ../../../etc/plugins
tkenv-image-path = bitmaps
check-signals = true
**.manager.**.scalar-recording = true
**.manager.**.vector-recording = true
**.manetrouting.**.scalar-recording = true
**.movStats.**.scalar-recording = true
**.movStats.**.vector-recording = true
**.mac.**.scalar-recording = true
**.mac.**.vector-recording = true
**.scalar-recording = true
**.vector-recording = true
#ChannelControl
*.channelControl.carrierFrequency = 2.4GHz
*.channelControl.pMax = 2mW
*.channelControl.sat = -110dBm
*.channelControl.alpha = 2
*.channelControl.numChannels = 1
# TraCIScenarioManagerLaunchd
*.manager.updateInterval = 1s
*.manager.host = "localhost"
*.manager.port = 9999
*.manager.moduleType = "rcdp9.TAdhocHost"
*.manager.moduleName = "coche"
*.manager.moduleDisplayString = ""
*.manager.autoShutdown = true
*.manager.margin = 25
*.manager.warmUpSeconds = 0
*.manager.launchConfig = xmldoc("VACaMobil/Milan/downtown.launch.xml")
*.manager.getStatistics = true
*.manager.statFiles = "${resultdir}/${configname}-${runnumber}-"
# nic settings
**.wlan[*].bitrate = 24Mbps
**.wlan[*].opMode = "g"
**.wlan[*].mgmt.frameCapacity = 10
**.wlan[*].mgmtType = "Ieee80211MgmtAdhoc"
**.wlan[*].mac.basicBitrate = 24Mbps
**.wlan[*].mac.controlBitrate = 24Mbps
**.wlan[*].mac.address = "auto"
**.wlan[*].mac.maxQueueSize = 14
**.wlan[*].mac.rtsThresholdBytes = 3000B
**.wlan[*].mac.retryLimit = 7
**.wlan[*].mac.cwMinData = 7
**.wlan[*].radio.transmitterPower = 2mW
**.wlan[*].radio.thermalNoise = -110dBm
**.wlan[*].radio.sensitivity = -85dBm
**.wlan[*].radio.pathLossAlpha = 2
**.wlan[*].radio.snirThreshold = 4dB
**.channelNumber = 0
**.coche.networkLayer.configurator.networkConfiguratorModule = "configurator"
# manet routing
**.routingProtocol = ${"AODVUU", "DYMO", "OLSR"}
**.tcpAlgorithmClass = "TCPNewReno"
**.coche[0..4].numTcpApps = 1
**.coche[0..4].tcpApp[*].typename = "TCPBasicClientApp"
**.coche[0..4].tcpApp[*].localPort = -1
**.coche[0..4].tcpApp[*].connectPort = 1000
**.coche[0..4].tcpApp[*].dataTransferMode = "bytecount"
**.coche[0..4].tcpApp[*].startTime = 10s
**.coche[0..4].tcpApp[*].thinkTime = 1s
**.coche[0..4].tcpApp[*].idleInterval = 3s
**.coche[0..4].tcpApp[*].requestLength = 5000000B
**.coche[5..94].numTcpApps = 0
**.coche[95..99].numTcpApps = 1
**.coche[95..99].tcpApp[*].typename = "TCPEchoApp"
**.coche[95..99].tcpApp[*].localPort = 1000
**.coche[95..99].tcpApp[*].dataTransferMode = "bytecount"
**.coche[0].tcpApp[*].connectAddress = "coche[99]"
**.coche[1].tcpApp[*].connectAddress = "coche[98]"
**.coche[2].tcpApp[*].connectAddress = "coche[97]"
**.coche[3].tcpApp[*].connectAddress = "coche[96]"
**.coche[4].tcpApp[*].connectAddress = "coche[95]"
**.meanNumberOfCars = 100
**.autoShutdown = false
Here is TAdhocHost.ned:
package rcdp9;
import inet.networklayer.IManetRouting;
import inet.networklayer.autorouting.ipv4.HostAutoConfigurator2;
import inet.nodes.inet.AdhocHost;
module TAdhocHost extends AdhocHost
{
parameters:
#display("i=device/cellphone");
mobilityType = default("TraCIMobility");
IPForward = true;
submodules:
ac_wlan: HostAutoConfigurator2 {
#display("p=127,240");
}
connections:
}
Here is Highway.ned:
package rcdp9;
import inet.world.VACaMobil.VACaMobil;
import inet.networklayer.autorouting.ipv4.IPv4NetworkConfigurator;
import inet.networklayer.autorouting.ipv4.HostAutoConfigurator;
import inet.nodes.inet.AdhocHost;
import inet.world.radio.ChannelControl;
import inet.world.traci.TraCIScenarioManagerLaunchd;
network Highway
{
submodules:
configurator: IPv4NetworkConfigurator {
#display("p=396,221");
}
channelControl: ChannelControl {
#display("p=396,310");
}
manager: VACaMobil {
#display("p=322,405");
}
connections allowunconnected:
}
From what I understand, VACaMobil is built on Veins.
Veins creates a new network node for every vehicle that starts driving. When the corresponding vehicle stops driving (having arrived at its destination) Veins deletes the network node. It never re-uses the same node index.
Thus, in your example, the first vehicle that starts driving will be coche[0]. The next vehicle that starts driving will be coche[1] - independent of whether coche[0] already arrived or is still driving.
Related
Sorry I am a beginner at terraform and found some useful modules.
I need to make a single aurora instance cluster for non-production and I need to shutdown after business hours.
how can I create an aurora cluster and schedule to run during business hours???
I can't get the scheduler to connect to the RDS cluster
provider "aws" {
region = local.region
}
locals {
name = "example-aurora"
region = "us-east-1"
tags = {
Owner = "user"
Environment = "dev"
}
}
################################################################################
# Supporting Resources
################################################################################
resource "random_password" "master" {
length = 10
}
module "vpc" {
source = "terraform-aws-modules/vpc/aws"
version = "~> 3.0"
name = "aurora_vpc"
cidr = "10.99.0.0/18"
enable_dns_support = true
enable_dns_hostnames = true
azs = ["${local.region}a", "${local.region}b", "${local.region}c"]
public_subnets = ["10.99.0.0/24", "10.99.1.0/24", "10.99.2.0/24"]
private_subnets = ["10.99.3.0/24", "10.99.4.0/24", "10.99.5.0/24"]
database_subnets = ["10.99.7.0/24", "10.99.8.0/24", "10.99.9.0/24"]
tags = local.tags
}
resource "aws_db_parameter_group" "muffy-pg" {
family = "postgres13"
name = "peter-rds-param-group"
parameter {
apply_method = "immediate"
name = "autovacuum_naptime"
value = "30"
}
parameter {
apply_method = "pending-reboot"
name = "autovacuum_max_workers"
value = "15"
}
}
resource "aws_docdb_cluster_parameter_group" "muffy-cluster-pg" {
name = "peter-rds-param-group"
family = "postgres13"
}
module "cluster" {
source = "terraform-aws-modules/rds-aurora/aws"
name = "test-aurora-db-postgres96"
engine = "aurora-postgresql"
engine_version = "13.7"
instance_class = "db.t3.small"
instances = {
one = {}
two = {}
}
vpc_id = module.vpc.vpc_id
subnets = [module.vpc.database_subnets[0], module.vpc.database_subnets[1], module.vpc.database_subnets[2]]
# allowed_security_groups = ["sg-12345678"]
allowed_cidr_blocks = ["10.99.0.0/18"]
storage_encrypted = true
apply_immediately = true
monitoring_interval = 10
db_parameter_group_name = aws_db_parameter_group.muffy-pg.name
db_cluster_parameter_group_name = aws_docdb_cluster_parameter_group.muffy-cluster-pg.name
enabled_cloudwatch_logs_exports = ["postgresql"]
tags = {
Environment = "dev"
Terraform = "true"
}
}
variable "environment" {
default = "dev"
}
module "rds_schedule" {
depends_on = [module.cluster]
source = "github.com/barryw/terraform-aws-rds-scheduler"
# version = "~> 2.0.0"
/* Don't stop RDS in production! */
skip_execution = var.environment == "prod"
identifier = "peter-scheduler"
/* Start the RDS cluster at 6:50am EDT Monday - Friday */
up_schedule = "cron(50 10 ? * MON-FRI *)"
/* Stop the RDS cluster at 9pm EDT every night */
down_schedule = "cron(0 1 * * ? *)"
rds_identifier = module.cluster.identifier
is_cluster = true
}
I guess the issue is with rds_identifier value used under module "rds_schedule"
rds_identifier = module.cluster.identifier
It should be,
rds_identifier = module.cluster.cluster_id
The source module for the aurora cluster used here "terraform-aws-modules/rds-aurora/aws" outputs the cluster identifier as cluster_id not cluster_identifier
Github Reference:
https://registry.terraform.io/modules/terraform-aws-modules/rds-aurora/aws/latest#outputs
I have this Nginx lua code which is used to encrypt numbers from 0 to 9 with its equivalent encrypted code ... ( see the example below )
and its working great , but i want to make it also encrypt Letters from A to Z.
I'm not familiar with lua so i don't know what is the best way to make it works !
content_by_lua_block {
local bf = {}
bf[0] = '(((_<<_)<<_)'
bf[1] = '(({}>[])-(()>[]))'
bf[2] = '(({}>[])-(()>[]))])'
bf[3] = '(({}>[])-(()>[]))])*'
bf[4] = '(({}>[])-(()>[]))])*(()>[])'
bf[5] = '(({}>[])-(()>[]))])*(()>[])%'
bf[6] = '(({}>[])-(()>[]))])*(()>[])%(((_<<_'
bf[7] = '(({}>[])-(()>[]))])*(()>[])%(((_<<_)<<_'
bf[8] = '(()>[]))])*(()>[])%(((_<<_)<<_)+((_<<_)*_))'
bf[9] = '(({}>[])-(()>[]))])*(()>[])%(((_<<_)<<_)+((_<<_)*_))'
local cookie = ngx.var.token
for i=0, 9 do
cookie = string.gsub(cookie, i, "'+"..bf[i].."+'")
end
Maybe something like that :
content_by_lua_block {
local bf = {}
bf[0] = '(((_<<_)<<_)'
bf[1] = '(({}>[])-(()>[]))'
bf[2] = '(({}>[])-(()>[]))])'
bf[3] = '(({}>[])-(()>[]))])*'
bf[4] = '(({}>[])-(()>[]))])*(()>[])'
bf[5] = '(({}>[])-(()>[]))])*(()>[])%'
bf[6] = '(({}>[])-(()>[]))])*(()>[])%(((_<<_'
bf[7] = '(({}>[])-(()>[]))])*(()>[])%(((_<<_)<<_'
bf[8] = '(()>[]))])*(()>[])%(((_<<_)<<_)+((_<<_)*_))'
bf[9] = '(({}>[])-(()>[]))])*(()>[])%(((_<<_)<<_)+((_<<_)*_))'
bf[a] = '(({}>[])-(()>[]))])*(()>[])%(((_<<_)<<_)+((_<<_)*_))(()>[])%'
bf[b] = '(({}>[])-(()>[]))])*(()>[])%(((_<<_)<<_)+((_<<_)*_))(()>[])%(()>[])%'
bf[c] = '(({}>[])-(()>[]))])*(()>[])%(((_<<_)<<_)+((_<<_)*_))(()>[])%(()>[])%(()>[])%'
...................
...................
...................
...................
bf[z] = '(({}>[])-(()>[]))])*(()>[])%(((_<<_)<<_)+((_<<_)*_))(()>[])%(()>[])%(()>[])%)%(()>[])%)%(()>[])%'
local cookie = ngx.var.token
for i=0, 9 and a, z do
cookie = string.gsub(cookie, i, "'+"..bf[i].."+'")
end
I tried to rewrite your code:
local bf = {}
bf[0] = '(((_<<_)<<_)'
bf[1] = '(({}>[])-(()>[]))'
bf[2] = '(({}>[])-(()>[]))])'
bf[3] = '(({}>[])-(()>[]))])*'
bf[4] = '(({}>[])-(()>[]))])*(()>[])'
bf[5] = '(({}>[])-(()>[]))])*(()>[])%'
bf[6] = '(({}>[])-(()>[]))])*(()>[])%(((_<<_'
bf[7] = '(({}>[])-(()>[]))])*(()>[])%(((_<<_)<<_'
bf[8] = '(()>[]))])*(()>[])%(((_<<_)<<_)+((_<<_)*_))'
bf[9] = '(({}>[])-(()>[]))])*(()>[])%(((_<<_)<<_)+((_<<_)*_))'
bf['a'] = '(({}>[])-(()>[]))])*(()>[])%(((_<<_)<<_)+((_<<_)*_))(()>[])%'
bf['b'] = '(({}>[])-(()>[]))])*(()>[])%(((_<<_)<<_)+((_<<_)*_))(()>[])%(()>[])%'
bf['c'] = '(({}>[])-(()>[]))])*(()>[])%(((_<<_)<<_)+((_<<_)*_))(()>[])%(()>[])%(()>[])%'
--
--
--
bf['z'] = '(({}>[])-(()>[]))])*(()>[])%(((_<<_)<<_)+((_<<_)*_))(()>[])%(()>[])%(()>[])%)%(()>[])%)%(()>[])%'
local cookie = "01sdz" -- ngx.var.token
-- first example
local cookie = cookie:gsub ( '.', function (x)
local s = tonumber(x) or x
if bf[s] then return "'+".. bf[s] .."+'"
else return x
end
end )
print(cookie)
-- second example
cookie = "01sdz"
for i=0, 9 do
cookie = string.gsub(cookie, i, "'+".. bf[i] .."+'")
-- may be use bf[i]:gsub( '([%%])', '%%%1') with escape escaping symbol %
end
for i= string.byte('a'), string.byte('z') do
local v = bf[string.char(i)]
if v then
cookie = cookie:gsub( string.char(i), "'+".. v:gsub( '([%%])', '%%%1') .."+'")
end
end
print(cookie)
result
'+(((_<<_)<<_)+''+(({}>[])-(()>[]))+'sd'+(({}>[])-(()>[]))])*(()>[])%(((_<<_)<<_)+((_<<_)*_))(()>[])%(()>[])%(()>[])%)%(()>[])%)%(()>[])%+'
'+(((_<<_)<<_)+''+(({}>[])-(()>[]))+'sd'+(({}>[])-(()>[]))])*(()>[])%(((_<<_)<<_)+((_<<_)*_))(()>[])%(()>[])%(()>[])%)%(()>[])%)%(()>[])%+'
I updated my code, anyway the second example will help you
Hello i'm new with omnet++ and networking simulations, i have the following network:
import inet.common.misc.NetAnimTrace;
import inet.networklayer.configurator.ipv4.IPv4NetworkConfigurator;
import inet.node.inet.StandardHost;
import ned.DatarateChannel;
import inet.networklayer.configurator.ipv4.IPv4NetworkConfigurator;
import inet.node.ethernet.Eth100M;
import inet.node.inet.Router;
import inet.node.inet.StandardHost;
import inet.node.inet.WirelessHost;
import inet.node.wireless.AccessPoint;
import inet.physicallayer.ieee80211.packetlevel.Ieee80211ScalarRadioMedium;
import inet.visualizer.contract.IIntegratedVisualizer;
network clienteServer
{
#display("bgb=500,300");
submodules:
visualizer: <default("IntegratedCanvasVisualizer")> like IIntegratedVisualizer if hasVisualizer() {
parameters:
#display("p=100,50");
}
configurator: IPv4NetworkConfigurator {
parameters:
assignDisjunctSubnetAddresses = false;
#display("p=100,150");
}
radioMedium: Ieee80211ScalarRadioMedium {
parameters:
#display("p=100,250");
}
TCP1: WirelessHost {
parameters:
#display("p=186,178");
}
UDP1: WirelessHost {
parameters:
#display("p=193,77");
}
Server: WirelessHost {
parameters:
#display("p=438,122");
}
accessPoint: AccessPoint {
parameters:
#display("p=315,108");
}
UDP2: WirelessHost {
parameters:
#display("p=255,30");
}
}
and my .ini file, is the following, is very simple
[General]
network = clienteServer
total-stack = 7MiB
tkenv-plugin-path = ../../../etc/plugins
debug-on-errors = true
record-eventlog = true
**.addDefaultRoutes = false
**.UDP1.numUdpApps = 10
**.UDP1.udpApp[*].typename = "UDPVideoStreamCli"
**.UDP1.udpApp[*].serverAddress = "Server"
**.UDP1.udpApp[*].serverPort = 1000
**.UDP2.numUdpApps = 1
**.UDP2.udpApp[*].typename = "UDPBasicApp"
**.UDP2.udpApp[*].destAddresses = "Server"
**.UDP2.udpApp[*].messageLength = 1000B
**.UDP2.udpApp[*].sendInterval = 12ms
**.Server.numUdpApps = 1
**.Server.udpApp[*].typename = "UDPVideoStreamSvr"
**.Server.udpApp[*].localPort = 1000
**.Server.udpApp[*].sendInterval = 10ms
**.Server.udpApp[*].packetLen = 2000B
**.Server.udpApp[*].videoSize = 100000B
**.TCP1.numTcpApps = 1
**.TCP1.tcpApp[*].typename = "TelnetApp"
**.TCP1.tcpApp[0].localAddress = ""
**.TCP1.tcpApp[0].localPort = -1
**.TCP1.tcpApp[0].connectAddress = "Server"
**.TCP1.tcpApp[0].connectPort = 1000
**.TCP1.tcpApp[0].startTime = 0
**.TCP1.tcpApp[0].commandLength = exponential(10B)
**.TCP1.tcpApp[0].commandOutputLength = exponential(5B)
**.TCP1.tcpApp[0].thinkTime = truncnormal(1s,2s)
**.TCP1.tcpApp[0].idleInterval = 10ms
**.TCP1.tcpApp[0].reconnectInterval = 3s
**.TCP1.tcpApp[0].dataTransferMode = "object"
**.Server.numTcpApps = 1
**.Server.tcpApp[*].typename = "TCPGenericSrvApp"
**.Server.tcpApp[0].localAddress = ""
**.Server.tcpApp[0].localPort = 1000
**.Server.tcpApp[0].replyDelay = 0
**.initialZ = 0
**.scalar-recording = true
**.vector-recording = true
As you can see, i only have 4 host, one that acts like a server, 2 UDP ones and one that send TCP msgs, How can i prioritize udp traffic over tcp, in a simple way, any suggestions please??
I need to display images so that they mimic the layout of iOS app icons on the various "home" pages. I have the code written to display the various images; however, I cannot figure out how to return a value which corresponds with each individual image on a click event.
Here's my code so far:
plates = {
"fat-burning-foods.jpg",
"fresh_food.jpg",
"fat-burning-foods.jpg",
"star.png",
"fat-burning-foods.jpg",
"star.png",
"fat-burning-foods.jpg",
"fresh_food.jpg",
"fat-burning-foods.jpg",
"star.png",
"fat-burning-foods.jpg",
"fresh_food.jpg",
"fat-burning-foods.jpg",
"star.png"
}
-- The PlateId will have corosponding indexes with the plates array. It will be used to query plate information
plateId = {1,2,3,4}
plateIdRef = {}
index = 1
platesIsh = {1,2,3,4,5,6,7,8}
local anX = 20
local anY = 120
for i=1, #plates do
local bufferY = 20
if index == 4 then
bufferY = 110
anX = 20
elseif index > 4 then
bufferY = 110
end
if index == 7 then
bufferY = 200
anX = 20
elseif index > 7 then
bufferY = 200
if index == 10 then
bufferY = 290
anX = 20
elseif index > 10 then
bufferY = 290
end
end
local dummyVar = math.random()
dummyVar = display.newImageRect(plates[index],80, 80)
sceneGroup:insert(dummyVar)
dummyVar.x = anX + 30
dummyVar.y = anY + bufferY
table.insert(plateIdRef, index)
function dummyVar:touch( event )
if event.phase == "began" then
local alert = native.showAlert( "Corona", event.target, { "OK", "Learn More" } )
--print( "You touched "..dummyVar)
return true
end
end
dummyVar:addEventListener( "touch", dummyVar )
anX = anX + 110
index = index + 1
end
Any ideas?
Ok, an example to see how it works:
local plates = {}
local function plateTouch( self, event )
local phase = event.phase
if phase == "ended" then
print( "You touched ".. self.id)
end
return true
end
for i=1, 3 do
plates[i] = display.newImageRect("test.png",80, 80)
plates[i].id = "plate " .. i
plates[i].x = 90 * i
plates[i].y = 90
plates[i].touch = plateTouch
plates[i]:addEventListener( "touch", plates[i] )
end
When you create each plate you can define an id property to know what button was pressed, also you can add any other properties you need.
You can see the API docs for touch event and see the example with table listeners.
Other approach could be object oriented solution, where you define a class to create new plates, but maybe first you need to understand the example.
I am generating a PDF using ITextSharp in ASP.NET. I need to display a table, with some data and Serial No auto incremented. I tried the following (using loop - increment) but it doesn't seem to work.
Dim dsGetStudentFeeDetails = dbl.usp_GetFeeReceiptDetailsForStudent(sid).AsQueryable
For Each f1 In dsGetStudentFeeDetails
Dim i As Integer = 1
stuName = New PdfPCell(FormatPhrase(i))
'stuName.Colspan = 4
'stuName.Border = 0
stuName.NoWrap = True
stuName.HorizontalAlignment = Element.ALIGN_LEFT
pdftable4.AddCell(stuName)
stuName = New PdfPCell(FormatPhrase(f1.FeeAmountPaidDate))
'stuName.Colspan = 4
'stuName.Border = 0
stuName.NoWrap = True
stuName.HorizontalAlignment = Element.ALIGN_LEFT
pdftable4.AddCell(stuName)
i = i + 1
Next
When I run through this during execution, I noticed that the i = i + 1 doesn't get incremented. Why so?
you have to declare and set default value Above for loop use below code
Dim dsGetStudentFeeDetails = dbl.usp_GetFeeReceiptDetailsForStudent(sid).AsQueryable
Dim i As Integer = 1
For Each f1 In dsGetStudentFeeDetails
stuName = New PdfPCell(FormatPhrase(i))
'stuName.Colspan = 4
'stuName.Border = 0
stuName.NoWrap = True
stuName.HorizontalAlignment = Element.ALIGN_LEFT
pdftable4.AddCell(stuName)
stuName = New PdfPCell(FormatPhrase(f1.FeeAmountPaidDate))
'stuName.Colspan = 4
'stuName.Border = 0
stuName.NoWrap = True
stuName.HorizontalAlignment = Element.ALIGN_LEFT
pdftable4.AddCell(stuName)
i = i + 1
Next