I'm trying to build a simple as3 server/client app.
When the client has connected to the server, it should send a message like "1" to the server.
The server does the following:
private function onConnect(e:ServerSocketConnectEvent):void
{
incomingSocket = e.socket;
incomingSocket.addEventListener(ProgressEvent.SOCKET_DATA, onData);
// You can now read and write data from the socket instance
trace("looks like a connection happened!");
}
private function onData(e: ProgressEvent):void {
var s:String = incomingSocket.readObject();
interrupt(s);
}
So flash throws me the error:
RangeError: Error #2006: The supplied
index is out of bounds. at
flash.net::Socket/readObject()
The line number flash provides me, shows that the problem is
var s:String = incomingSocket.readObject();
Has anyone an idea whats going on here?
Thank you!
n
readObject is used to read a serialized object on the socket.
If you sent a string, use readUTF, or readUTFBytes if you know the length the string should have.
If you sent a Int, use readInt, or the corresponding method.
Related
I'm writing a very simple console app that needs to dig into a database and read values. I'm having issues getting the connection string from the appsettings.json. After a whole load of googling I've found a bunch of solutions, each of which with their own issues such as being out of date or just returning null values with no obvious reason why. The main (and most common) method i've found to do it is as below:
static void Main()
{
var configuration = GetConfiguration();
var connectionString = configuration.GetSection("ConnectionsStrings").GetSection("DbName");
}
public static IConfigurationRoot GetConfiguration()
{
var builder = new ConfigurationBuilder().AddJsonFile("appsettings.json", optional: true, reloadOnChange: true);
return builder.Build();
}
This somewhat works but just returns a null value where I'd expect the connection string.
The appsettings.json is as below:
{
"ConnectionStrings": {
"DbName": "Connection string"
}
}
If anyone can spot anything obvious and help me along, it'd be much appreciated.
Warning to everyone out there. Don't be like me. Don't add your appsettings.json then for 17 hours completely forget to check the properties and make it an embedded resource while getting annoyed that your returned value is just null all the time. You would think after years of coding I'd learn my lesson....
I want to find length of given string with out using pub.string.length (built in function) in web methods .
Ex:If we give name "abcdef" i want result like 6 .
You could write your own java service, but that sounds redundant to me.
Here's an (as yet untested) code sample:
public static final void checkStringSize(IData pipeline)
throws ServiceException {
// pipeline
IDataCursor pipelineCursor = pipeline.getCursor();
String inputString = IDataUtil.getString( pipelineCursor, "inputString" );
pipelineCursor.destroy();
long length = -1;
length = inputString.length();
// pipeline
IDataCursor pipelineCursor_1 = pipeline.getCursor();
IDataUtil.put( pipelineCursor_1, "length", ""+length );
pipelineCursor_1.destroy();
}
You could manually count the length of the string by using pub.string:substring until it gets an error.
I wouldn't recommend this - it's inelegant, possibly quite slow and it still uses a function from pub.string, which you appear to be avoiding.
Anyway, here's a way to do it, click the link to see the image.
webMethods code sample - https://i.stack.imgur.com/FE9oU.jpg
Just make sure the input string cannot be null - otherwise the substring won't throw an error and it will have an infinite loop.
I have a flash project with many soundchannels active at the same time. I want a little function to play one and loop it, and the name of the sound channel will be passed as a parameter. This is the function:
function playBGMusic(channel:String):void
{
SoundChannel(channel) = bgSound1.play();
SoundChannel(channel).addEventListener(Event.SOUND_COMPLETE, loopBGMusic);
}
playBGMusic("bgChannel1");
This doesn't works, flash gives me this error:
1105: Target of assignment must be a reference value.
I tried to simplify the function, using an static string only in the listener
function playBGMusic():void
{
bgChannel1 = bgSound1.play();
SoundChannel("bgChannel1").addEventListener(Event.SOUND_COMPLETE, loopBGMusic);
}
playBGMusic();
This time it compiles, but it gives me this error:
Error #1034: Type Coercion failed: cannot convert "bgChannel1" to
flash.media.SoundChannel.
How can I access to a sound channel from a string?
Thaks.
You need to access it in the context of this:
SoundChannel(this[channel]) or SoundChannel(this["bgChannel1"])
I'm using the Newtonsoft json.NET parser for JSON parsing. In my deserialization, I have the following code so that errors when converting from String to Int will not force me to throw away the entire object:
var param2 = new JsonSerializerSettings
{
Error = delegate(object sender, Newtonsoft.Json.Serialization.ErrorEventArgs args)
{
args.ErrorContext.Handled = true;
}
};
bcontent = JsonConvert.DeserializeObject<BContent>(json, param2);
I do not have control of the input data and the parsing errors are very common so I need to be versatile enough to handle them. Unfortunately, marking all errors as handled causes the deserialization to not terminate when it runs into a different error in a constrained environment.
What I want to do is to mark the errors as handled when they are of a type with a similar message as:
Could not convert string to integer....
But not when they are something different, such as this error which causes the hang:
Unterminated string. Expected delimiter...
What I can do is something like this:
Error = delegate(object sender, Newtonsoft.Json.Serialization.ErrorEventArgs args)
{
if (args.ErrorContext.Error.Message.Contains("convert string to integer"))
args.ErrorContext.Handled = true;
}
But it seems like there's no other way to determine a more specific error than JsonReaderException. Has anyone encountered this issue before and found a better workaround than a String.Contains()?
I want to have a collection of objects, which will be of a class I created called Server. A Server has a string property which is it's IP address, as well as many other pieces of data and objects.
I will have methods for adding and removing servers to this collection, and there will be a need to find a server by it's IP address occasionally. If I were doing this in C# I would use a Dictionary< where the IP string would be the key and the Server object would be the value. I could easily check to see if an item exists in the Dictionary before attempting to add it.
So my requirements are:
1. Ability to add items to the collection (I don't care where they go, front, back, middle)
2. Ability to remove items from anywhere in the collection.
3. Ability to determine if a particular IP address already exists in the collection.
4. Ability to get a reference to a Server object by it's IP.
Edit: Oh yes, I would like it to be strongly typed like the Vector... I guess it's not absolutely necesary, but would be nice.
So it seems like an associative arrays will give me what I need, except I'm not sure about how to do #3 or #4.
public var Servers:Object = new Object( );
public function AddServer(server:Server):void
{
//TODO:need to check if it exists first and throw an error if so
//(it's the caller's responsibility to call DoesServerExist first)
Servers[server.IP] = server;
}
public function RemoveServer(IP:string):void
{
//is it OK to attempt to delete an item if it doesn't already exist?
//do I need to check if it exists before doing delete?
delete Servers[IP];
}
public function DoesServerExist(IP:string):bool
{
//Do I loop through all the elements testing it's IP property?
//Or can I just do something like this?
if(Servers[IP] == null)
{
return false;
}
else
{
return true;
}
}
public function GetServer(IP:string):Server
{
return Servers[IP];//what is returned if this IP doesn't exist?
}
Call me goofy, but why not use the Dictionary class? That gets you everything except strong typing.
If you want strong typing then I'd say you need a custom container, which wraps up a Vector of Servers, and a Dictionary or associative array of IP strings that indexes into the Vector. Then you'd need to expose methods for access, test, insert and remove.
You can just use an array. Example:
var dict:Array = [];
var ip = "164.157.012.122"
dict[ip] = "Server name"
if (dict[ip] == "Server name"){
trace("Yay");
}
//membership
if (dict[ip]){
trace(ip + " is a member of dict");
} else {
trace (ip + " is not a member");
}
//removal:
dict[ip] = null;
AS3 does not really have a built in Dictionary class, unfortunately.