Lagg in game: 1 server, 2 clients.

Dear Forum Users, I'm currently trying to make a multiplayer game in java.
I got a server, and a client side. But for some reason i got delay and lagg.
I do not have delay when i host the server at the same computer (and run the clients at the same).
But all clients that are external, lagg (for both clients, even if the other one is local).
Could anyone help me out with my code? First time making a server client, and a game for that sake.
So pointers and methods to do things in another way, would be really helpfull.
Links To Source: (Too much to post)
Server
Client
Edited by: Lgeee on Jan 9, 2009 8:35 AM

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Multiplayer game: how to synchronize client and server

Hi there, I'm wondering how to synchronzie client's and server's frame number?
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Edited by: leden on Sep 30, 2007 2:21 PM
Edited by: leden on Sep 30, 2007 2:22 PM
Edited by: leden on Sep 30, 2007 2:22 PM

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Union All
Select
T1.U_grp01 As 'BA',T3.DocDate As 'Posting Date',Month(T3.DocDate) As 'PostMonth',Year(T3.DocDate) As 'PostYear',
'AR Invoice' As 'Type',T3.DocNum As 'Doc No',T3.CardCode As 'Cust. Code',T3.CardName As 'Cust. Name',T5.SlpName As 'Sale Emp. Name',
T4.IndustryC As 'Channel Type',T6.CityB As 'BillToCity',T7.Name As 'BillToState',T6.CityS As 'ShipToCity',T8.Name As 'ShipToState',
T4.U_Une_Zone As 'Zone',
T2.ItmsGrpNam As 'L1',T0.LineNum As 'Row No',T0.ItemCode As 'ItemCode',T0.Dscription As 'Item Name',t0.whscode,
T0.Quantity As 'Quantity',T0.StockPrice As 'COGS Price',IsNull(Sum(T0.Quantity * T0.StockPrice),0) As 'COGS Value',T0.VatSum As 'Tax Amount',
IsNull((Case When T3.DocType='I' Then (Case When T0.Currency = 'INR' Then T0.PriceBefDi Else (T0.PriceBefDi * T0.Rate) End) Else T0.Price End) ,0) As 'Sales Price',
IsNull((Case When T3.DocType='I' Then (Case When T0.Currency = 'INR' Then T0.INMPrice Else (T0.INMPrice * T0.Rate) End) Else T0.Price End) ,0) As 'Sales Price',
IsNull((Case When T3.DocType='I' Then (Case When T0.Currency = 'INR' Then Sum(T0.Quantity * T0.INMPrice) Else Sum(T0.Quantity * T0.INMPrice * T0.Rate) End) Else T0.LineTotal End) ,0) As 'Sales Value',t9.linetotal as 'Freight',
T3.DocType As 'DocType',
(SELECT DISTINCT ISNULL (SUM(rin4.TaxSum),0)
FROM rin4
WHERE rin4.StaType = -90
AND rin4.DocEntry = T3.DocEntry
AND rin4.LineNum = T0.LineNum) AS 'BED',
(SELECT DISTINCT ISNULL (SUM(rin4.TaxSum),0)
FROM rin4
WHERE rin4.StaType = -60
AND rin4.DocEntry = T3.DocEntry
AND rin4.LineNum = T0.LineNum) AS 'Cess',
(SELECT DISTINCT ISNULL (SUM(rin4.TaxSum),0)
FROM rin4
WHERE rin4.StaType = 9
AND rin4.DocEntry = T3.DocEntry
AND rin4.LineNum = T0.LineNum) AS 'HeCess',
(SELECT DISTINCT ISNULL (SUM(rin4.TaxSum),0)
FROM rin4
WHERE (rin4.StaType = 1 or rin4.staType = 8)
AND rin4.DocEntry = T3.DocEntry
AND rin4.LineNum = T0.LineNum) AS 'VAT',
(SELECT DISTINCT ISNULL (SUM(rin4.TaxSum),0)
FROM rin4
WHERE rin4.StaType = 8
AND rin4.DocEntry = T3.DocEntry
AND rin4.LineNum = T0.LineNum) AS 'CST'
From rin1 T0
Left Join OITM T1 On T1.ItemCode=T0.ItemCode
Left Join OITB T2 On T2.ItmsGrpCod=T1.ItmsGrpCod
Left Join Orin T3 On T3.DocEntry=T0.DocEntry
Left Join OCRD T4 On T4.CardCode=T3.CardCode
Left Join OSLP T5 On T5.SlpCode=T4.SlpCode
Left Join rin12 T6 On T6.DocEntry=T0.DocEntry
Left Join OCST T7 On T7.Code=T6.StateB and T7.Country='IN'
Left Join OCST T8 On T8.Code=T6.StateS and T8.Country='IN'
left join rin3 t9 on t9.docentry = t3.docentry
WHERE T3.[DocDate] >= [%0] and T3.[DocDate] <= [%1] and t3.U_UNE_GCAT = '2'
Group By T1.U_grp01,T3.DocEntry,T3.DocNum,T3.DocDate,T0.LineNum,T3.CardCode,T3.CardName,T5.SlpName,T4.IndustryC,T4.U_Une_Zone,
T6.CityB,T7.Name,T6.CityS,T8.Name,T0.VatSum,T0.Currency,T0.Rate,T3.DocType,T0.Price,T0.LineTotal,
T2.ItmsGrpNam,T0.ItemCode,T0.Dscription,T0.StockPrice,T0.INMPrice,T0.PriceBefDi,T0.Quantity,t9.linetotal,t0.WhsCode
Thanks in Advance

Hi deepak..
try this
/* SELECT FROM OSRT P1 */
DECLARE @FROM AS DATE
/* WHERE */
SET @FROM = /* P1.FromDate */ '[%1]'
/* SELECT FROM OSRT P2 */
DECLARE @TO AS DATE
/* WHERE */
SET @TO = /* P2.ToDate */ '[%2]';
SELECT T1.U_grp01 AS 'BA',
       T3.DocDate AS 'Posting Date',
       MONTH(T3.DocDate) AS 'PostMonth',
       YEAR(T3.DocDate) AS 'PostYear',
       'AR Invoice' AS 'Type',
       T3.DocNum AS 'Doc No',
       T3.CardCode AS 'Cust. Code',
       T3.CardName AS 'Cust. Name',
       T5.SlpName AS 'Sale Emp. Name',
       T4.IndustryC AS 'Channel Type',
       T6.CityB AS 'BillToCity',
       T7.Name AS 'BillToState',
       T6.CityS AS 'ShipToCity',
       T8.Name AS 'ShipToState',
       T4.U_Une_Zone AS 'Zone',
       T2.ItmsGrpNam AS 'L1',
       T0.LineNum AS 'Row No',
       T0.ItemCode AS 'ItemCode',
       T0.Dscription AS 'Item Name',
       t0.whscode,
       T0.Quantity AS 'Quantity',
       T0.StockPrice AS 'COGS Price',
       ISNULL(SUM(T0.Quantity * T0.StockPrice), 0) AS 'COGS Value',
       T0.VatSum AS 'Tax Amount',
       ISNULL(
               CASE
                    WHEN T3.DocType = 'I' THEN (
                             CASE
                                  WHEN T0.Currency = 'INR' THEN T0.PriceBefDi
                                  ELSE (T0.PriceBefDi * T0.Rate)
                             END
                    ELSE T0.Price
               END
           0
       ) AS 'Sales Price',
       ISNULL(
               CASE
                    WHEN T3.DocType = 'I' THEN (
                             CASE
                                  WHEN T0.Currency = 'INR' THEN T0.INMPrice
                                  ELSE (T0.INMPrice * T0.Rate)
                             END
                    ELSE T0.Price
               END
           0
       ) AS 'Sales Price',
       ISNULL(
               CASE
                    WHEN T3.DocType = 'I' THEN (
                             CASE
                                  WHEN T0.Currency = 'INR' THEN SUM(T0.Quantity * T0.INMPrice)
                                  ELSE SUM(T0.Quantity * T0.INMPrice * T0.Rate)
                             END
                    ELSE T0.LineTotal
               END
           0
       ) AS 'Sales Value',
       t9.linetotal AS 'Freight',
       T3.DocType AS 'DocType',
           SELECT DISTINCT ISNULL(SUM(INV4.TaxSum), 0)
           FROM   INV4
           WHERE INV4.StaType = -90
                  AND INV4.DocEntry = T3.DocEntry
                  AND INV4.LineNum = T0.LineNum
       ) AS 'BED',
           SELECT DISTINCT ISNULL(SUM(INV4.TaxSum), 0)
           FROM   INV4
           WHERE INV4.StaType = -60
                  AND INV4.DocEntry = T3.DocEntry
                  AND INV4.LineNum = T0.LineNum
       ) AS 'Cess',
           SELECT DISTINCT ISNULL(SUM(INV4.TaxSum), 0)
           FROM   INV4
           WHERE INV4.StaType = 9
                  AND INV4.DocEntry = T3.DocEntry
                  AND INV4.LineNum = T0.LineNum
       ) AS 'HeCess',
           SELECT DISTINCT ISNULL(SUM(INV4.TaxSum), 0)
           FROM   INV4
           WHERE (INV4.StaType = 1 OR inv4.staType = 8)
                  AND INV4.DocEntry = T3.DocEntry
                  AND INV4.LineNum = T0.LineNum
       ) AS 'VAT',
           SELECT DISTINCT ISNULL(SUM(INV4.TaxSum), 0)
           FROM   INV4
           WHERE INV4.StaType = 8
                  AND INV4.DocEntry = T3.DocEntry
                  AND INV4.LineNum = T0.LineNum
       ) AS 'CST'
FROM   INV1 T0
       LEFT JOIN OITM T1
            ON T1.ItemCode = T0.ItemCode
       LEFT JOIN OITB T2
            ON T2.ItmsGrpCod = T1.ItmsGrpCod
       LEFT JOIN OINV T3
            ON T3.DocEntry = T0.DocEntry
       LEFT JOIN OCRD T4
            ON T4.CardCode = T3.CardCode
       LEFT JOIN OSLP T5
            ON T5.SlpCode = T4.SlpCode
       LEFT JOIN INV12 T6
            ON T6.DocEntry = T0.DocEntry
       LEFT JOIN OCST T7
            ON T7.Code = T6.StateB
            AND T7.Country = 'IN'
       LEFT JOIN OCST T8
            ON T8.Code = T6.StateS
            AND T8.Country = 'IN'
       LEFT JOIN inv3 t9
            ON t9.docentry = t3.docentry
WHERE T3.[DocDate] >= @FROM
       AND T3.[DocDate] <= @TO
       AND t3.U_UNE_GCAT = '2'
GROUP BY
       T1.U_grp01,
       T3.DocEntry,
       T3.DocNum,
       T3.DocDate,
       T0.LineNum,
       T3.CardCode,
       T3.CardName,
       T5.SlpName,
       T4.IndustryC,
       T4.U_Une_Zone,
       T6.CityB,
       T7.Name,
       T6.CityS,
       T8.Name,
       T0.VatSum,
       T0.Currency,
       T0.Rate,
       T3.DocType,
       T0.Price,
       T0.LineTotal,
       T2.ItmsGrpNam,
       T0.ItemCode,
       T0.Dscription,
       T0.StockPrice,
       T0.INMPrice,
       T0.PriceBefDi,
       T0.Quantity,
       t9.linetotal,
       t0.WhsCode
UNION ALL
SELECT T1.U_grp01 AS 'BA',
       T3.DocDate AS 'Posting Date',
       MONTH(T3.DocDate) AS 'PostMonth',
       YEAR(T3.DocDate) AS 'PostYear',
       'AR Invoice' AS 'Type',
       T3.DocNum AS 'Doc No',
       T3.CardCode AS 'Cust. Code',
       T3.CardName AS 'Cust. Name',
       T5.SlpName AS 'Sale Emp. Name',
       T4.IndustryC AS 'Channel Type',
       T6.CityB AS 'BillToCity',
       T7.Name AS 'BillToState',
       T6.CityS AS 'ShipToCity',
       T8.Name AS 'ShipToState',
       T4.U_Une_Zone AS 'Zone',
       T2.ItmsGrpNam AS 'L1',
       T0.LineNum AS 'Row No',
       T0.ItemCode AS 'ItemCode',
       T0.Dscription AS 'Item Name',
       t0.whscode,
       T0.Quantity AS 'Quantity',
       T0.StockPrice AS 'COGS Price',
       ISNULL(SUM(T0.Quantity * T0.StockPrice), 0) AS 'COGS Value',
       T0.VatSum AS 'Tax Amount',
       ISNULL(
               CASE
                    WHEN T3.DocType = 'I' THEN (
                             CASE
                                  WHEN T0.Currency = 'INR' THEN T0.PriceBefDi
                                  ELSE (T0.PriceBefDi * T0.Rate)
                             END
                    ELSE T0.Price
               END
           0
       ) AS 'Sales Price',
       ISNULL(
               CASE
                    WHEN T3.DocType = 'I' THEN (
                             CASE
                                  WHEN T0.Currency = 'INR' THEN T0.INMPrice
                                  ELSE (T0.INMPrice * T0.Rate)
                             END
                    ELSE T0.Price
               END
           0
       ) AS 'Sales Price',
       ISNULL(
               CASE
                    WHEN T3.DocType = 'I' THEN (
                             CASE
                                  WHEN T0.Currency = 'INR' THEN SUM(T0.Quantity * T0.INMPrice)
                                  ELSE SUM(T0.Quantity * T0.INMPrice * T0.Rate)
                             END
                    ELSE T0.LineTotal
               END
           0
       ) AS 'Sales Value',
       t9.linetotal AS 'Freight',
       T3.DocType AS 'DocType',
           SELECT DISTINCT ISNULL(SUM(rin4.TaxSum), 0)
           FROM   rin4
           WHERE rin4.StaType = -90
                  AND rin4.DocEntry = T3.DocEntry
                  AND rin4.LineNum = T0.LineNum
       ) AS 'BED',
           SELECT DISTINCT ISNULL(SUM(rin4.TaxSum), 0)
           FROM   rin4
           WHERE rin4.StaType = -60
                  AND rin4.DocEntry = T3.DocEntry
                  AND rin4.LineNum = T0.LineNum
       ) AS 'Cess',
           SELECT DISTINCT ISNULL(SUM(rin4.TaxSum), 0)
           FROM   rin4
           WHERE rin4.StaType = 9
                  AND rin4.DocEntry = T3.DocEntry
                  AND rin4.LineNum = T0.LineNum
       ) AS 'HeCess',
           SELECT DISTINCT ISNULL(SUM(rin4.TaxSum), 0)
           FROM   rin4
           WHERE (rin4.StaType = 1 OR rin4.staType = 8)
                  AND rin4.DocEntry = T3.DocEntry
                  AND rin4.LineNum = T0.LineNum
       ) AS 'VAT',
           SELECT DISTINCT ISNULL(SUM(rin4.TaxSum), 0)
           FROM   rin4
           WHERE rin4.StaType = 8
                  AND rin4.DocEntry = T3.DocEntry
                  AND rin4.LineNum = T0.LineNum
       ) AS 'CST'
FROM   rin1 T0
       LEFT JOIN OITM T1
            ON T1.ItemCode = T0.ItemCode
       LEFT JOIN OITB T2
            ON T2.ItmsGrpCod = T1.ItmsGrpCod
       LEFT JOIN [dbo].[Orin] T3
            ON T3.DocEntry = T0.DocEntry
       LEFT JOIN OCRD T4
            ON T4.CardCode = T3.CardCode
       LEFT JOIN OSLP T5
            ON T5.SlpCode = T4.SlpCode
       LEFT JOIN rin12 T6
            ON T6.DocEntry = T0.DocEntry
       LEFT JOIN OCST T7
            ON T7.Code = T6.StateB
            AND T7.Country = 'IN'
       LEFT JOIN OCST T8
            ON T8.Code = T6.StateS
            AND T8.Country = 'IN'
       LEFT JOIN rin3 t9
            ON t9.docentry = t3.docentry
WHERE T3.[DocDate] >= @FROM
       AND T3.[DocDate] <= @TO
       AND t3.U_UNE_GCAT = '2'
GROUP BY
       T1.U_grp01,
       T3.DocEntry,
       T3.DocNum,
       T3.DocDate,
       T0.LineNum,
       T3.CardCode,
       T3.CardName,
       T5.SlpName,
       T4.IndustryC,
       T4.U_Une_Zone,
       T6.CityB,
       T7.Name,
       T6.CityS,
       T8.Name,
       T0.VatSum,
       T0.Currency,
       T0.Rate,
       T3.DocType,
       T0.Price,
       T0.LineTotal,
       T2.ItmsGrpNam,
       T0.ItemCode,
       T0.Dscription,
       T0.StockPrice,
       T0.INMPrice,
       T0.PriceBefDi,
       T0.Quantity,
       t9.linetotal,
       t0.WhsCode
rgds
Kennedy

Sending file from server to client

I am creating a server that stores application updates. When the client connects the server send the update. The server is sending the file but the file is not complete, i.e, if the file is 317kb,its send 117kb. Below is the code i am using
import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.net.ServerSocket;
import java.net.Socket;
public class TestFileServer {
public final static int SOCKET_PORT = 13267;
public final static String FILE_TO_SEND = "/home/test/1234.exe"; //Does the extension matter?
public static void main (String [] args ) throws IOException {
FileInputStream fis = null;
BufferedInputStream bis = null;
OutputStream os = null;
ServerSocket servsock = null;
Socket sock = null;
try {
servsock = new ServerSocket(SOCKET_PORT);
while (true) {
System.out.println("Waiting...");
try {
sock = servsock.accept();
System.out.println("Accepted connection : " + sock);
// send file
File myFile = new File (FILE_TO_SEND);
byte [] mybytearray = new byte [(int)myFile.length()];
fis = new FileInputStream(myFile);
bis = new BufferedInputStream(fis);
bis.read(mybytearray,0,mybytearray.length);
os = sock.getOutputStream();
System.out.println("Sending " + FILE_TO_SEND + "(" + mybytearray.length + " bytes)");
os.write(mybytearray,0,mybytearray.length);
os.flush();
System.out.println("Done.");
finally {
if (bis != null) bis.close();
if (os != null) os.close();
if (sock!=null) sock.close();
finally {
if (servsock != null) servsock.close();
What could the problem be?

What could the problem be?
The FIRST problem is that your code has NO exception handler and is just HIDING any exceptions that might be occuring.
Why are you doing that?
Code should either HANDLE an exception or let it bubble up to the caller.
Add exception handling to the code and rerun it to see if any exceptions are occuring that could be affecting the outcome.
The SECOND problem is that you are NOT showing the client side that is being used and any code that might be causing/handling/hiding exceptions on the client side.
Post a simple test case that includes both server and client that demonstrates the problem you have.

Creation of files on server from client

i want to create a file on server from client.
so i have to create the file using uri that resides on server, but i am not able to create file using that URI
i want to create in this location.
"http://localhost:8080/web/a.jsp"
so please give me the syntax for that.
thanks in advance

i checked that url........but its talking ablut urlconnection and url......but i want to create file with uri....could u plz help me
thx & regds

Re: (forte-users) Delays in data transfer..server-to-client

I would try using DOM (distributed object manager) traces. trc:do:20 will
give you information on each messages sent from and received by the
partition. Levels are 1, 2, 5, 7, and 8, and trc:do:*:8 is very
verbose. trc:do:20:1 may tell you what you want to know. trc:do:1:1 will
give you a basic 1-line-per DOM event trace that may also be all you need.
Communications manager traces will tell you about network and socket-level
activity, but not about the sizes of the messages themselves. In addition,
the operating system makes decisions about physical packet size and
send/receive timing, so CM activities only generally map to actual network
activity.
-tdc
iPlanet Integration Server Engineering
At 09:24 AM 5/1/01 -0700, you wrote:
All,
We are experiencing delays in object transfer between server and client. The
delays are longer with large objects (a single object with an array of objects
that reflect the rows returned in a database) than small (ie: 10 rows vs 400).
Does anyone have any (actual) experience using the various Forte' flags in
order
to show the actual size of the object/packets being passed between the server
and client?
We are using input/output between client and server, input on all the SO's
within a partition. Response on the server side is good, roughly 6 seconds or
so. The round trip fare however from the time the client makes the SO call to
the time that it completes is in the 25-30 second range, leaving roughly 20-25
seconds unaccounted for. I have brought in the network guys who are
requesting
the data size and packet information. I did not see what I am looking for
using
the trc:cm:*:4 and trc:cm:*:8 flags. I will be trying the trc:cm:*:10
flag, but
Forte' indicates that this flag is very verbose, the systems group hates
it when
I use up all of THEIR disk space!
Any ideas would be appreciated as always.

Jeff,
If the object you are passing does not require changes made to it in the
server partition to be returned, pass the object as copy input (pass by
value not reference). If it is necessary to pass the object as input, try
to pass only the attributes that are required to the remote partition
instead of the whole object.
Input/Output is normaly used with scalar variables. When a scalar is passed
to a remote partition, if the value is changed in that partition, the value
is not returned to the calling partition unless Input/Output is used.
Input/Output should not be used for object type parameters, if you need to
pass a reference, use Input only. If you can pass by value, use Copy Input.
You will notice a huge difference in performance changing from Input to Copy
input when passing large objects.
Hope this helps,
Travis Foote
Fortedeveloper.com Inc.
----- Original Message -----
From: "Jeff Bennett" <[email protected]>
To: <[email protected]>
Sent: Tuesday, May 01, 2001 9:24 AM
Subject: (forte-users) Delays in data transfer.. server-to-client
>
All,
We are experiencing delays in object transfer between server and client.The
delays are longer with large objects (a single object with an array ofobjects
that reflect the rows returned in a database) than small (ie: 10 rows vs400).
>
Does anyone have any (actual) experience using the various Forte' flags inorder
to show the actual size of the object/packets being passed between theserver
and client?
We are using input/output between client and server, input on all the SO's
within a partition. Response on the server side is good, roughly 6seconds or
so. The round trip fare however from the time the client makes the SOcall to
the time that it completes is in the 25-30 second range, leaving roughly20-25
seconds unaccounted for. I have brought in the network guys who arerequesting
the data size and packet information. I did not see what I am looking forusing
the trc:cm:*:4 and trc:cm:*:8 flags. I will be trying the trc:cm:*:10flag, but
Forte' indicates that this flag is very verbose, the systems group hatesit when
I use up all of THEIR disk space!
Any ideas would be appreciated as always.
-jeff
For the archives, go to: http://lists.xpedior.com/forte-users and use
the login: forte and the password: archive. To unsubscribe, send in a new
email the word: 'Unsubscribe' to: [email protected]

Lagg in game: 1 server, 2 clients.

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