dockets and readLine()

Posted on 1998-10-15
Medium Priority
Last Modified: 2012-06-21
if DataInputStream.readLine block until char(13) , and i"m using sockets for communiction so if client and server coming both to readline(), then all the proccess stack , right?
for some reasone my comunication between the client and the server get stuck after a few msg dialog ,any other idea ?
how can i solv it ?
10x in advance
Question by:asi
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
  • 2

Author Comment

ID: 1225840
does a communication with sockets and stream inforce order between the client and the server (i.e :one sentence server and one client ) ?

Author Comment

ID: 1225841
if the answer to the last comment is yes ? what is the oaltrnative to un order connection ?

Expert Comment

ID: 1225842
Can you explain what you are doing a bit more....

I assume you communication protocol is failing..?

If you are writing a clinet/server app both the client and the server must know what data to expect.. (protocol)

For example.. if you send 2 strings to the client (from the server) the client must know how many string to retrieve..


client reads how many and expects that many..

for(int i=0;i<how_many;i++)

string1 = dis.readUTF();
string1 = dis.readUTF();
string_n = dis.readUTF();


I'm not sure what your problem is though.. can u explain it som more..

Optimize your web performance

What's in the eBook?
- Full list of reasons for poor performance
- Ultimate measures to speed things up
- Primary web monitoring types
- KPIs you should be monitoring in order to increase your ROI


Expert Comment

ID: 1225843
You have to define your custom message system. In the most simple case it should be something like this:

//Control line
Line1 : "DO X, DATA N"
Next N lines contain data

When the server (or the client) receives a control line, it knows what to read afterwards. Also, it is good the communication to be, from the type,
request, response, request, response,....

so, it won't hapen bot the server and the client to wait for a request (or responce) simultaneously, which case they'll both block.

Another solution. Make two channels, outgoing and incomming, preferably in separate threads. this way you will be able to send , while waiting and receive while sending. this is especially valid for the server.


Author Comment

ID: 1225844
change your statuse to answer
and i'll give u the pointe
(i find some other solution , every time client or server receive somthing he should send immeditli "ping " one direction msg (in case that there is nothing else in the outgoing line
but u desever the points   ...


Accepted Solution

diakov earned 200 total points
ID: 1225845
sure. you're welcome.


Featured Post

Free Tool: Path Explorer

An intuitive utility to help find the CSS path to UI elements on a webpage. These paths are used frequently in a variety of front-end development and QA automation tasks.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

For beginner Java programmers or at least those new to the Eclipse IDE, the following tutorial will show some (four) ways in which you can import your Java projects to your Eclipse workbench. Introduction While learning Java can be done with…
Java contains several comparison operators (e.g., <, <=, >, >=, ==, !=) that allow you to compare primitive values. However, these operators cannot be used to compare the contents of objects. Interface Comparable is used to allow objects of a cl…
Viewers learn about the third conditional statement “else if” and use it in an example program. Then additional information about conditional statements is provided, covering the topic thoroughly. Viewers learn about the third conditional statement …
Viewers will learn about if statements in Java and their use The if statement: The condition required to create an if statement: Variations of if statements: An example using if statements:
Suggested Courses
Course of the Month12 days, 9 hours left to enroll

777 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question