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<title>Client \ Language (API) \ Processing 2+</title>
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<p class="ref-notice">This reference is for Processing 3.0+. If you have a previous version, use the reference included with your software in the Help menu. If you see any errors or have suggestions, <a href="https://github.com/processing/processing-docs/issues?state=open">please let us know</a>. If you prefer a more technical reference, visit the <a href="http://processing.github.io/processing-javadocs/core/">Processing Core Javadoc</a> and <a href="http://processing.github.io/processing-javadocs/libraries/">Libraries Javadoc</a>.</p>
<table cellpadding="0" cellspacing="0" border="0" class="ref-item">
<tr class="name-row">
<th scope="row">Name</th>
<td><h3>Client</h3></td>
</tr>
<tr class=""><th scope="row">Examples</th><td><div class="example"><pre >
import processing.net.*;
Client myClient;
int dataIn;
void setup() {
size(200, 200);
// Connect to the local machine at port 5204.
// This example will not run if you haven't
// previously started a server on this port.
myClient = new Client(this, "127.0.0.1", 5204);
}
void draw() {
if (myClient.available() > 0) {
dataIn = myClient.read();
}
background(dataIn);
}
</pre></div>
</td></tr>
<tr class="">
<th scope="row">Description</th>
<td>
A client connects to a server and sends data back and forth. If anything goes wrong with the connection, for example the host is not there or is listening on a different port, an exception is thrown.
</td>
</tr>
<tr class=""><th scope="row">Methods</th><td><table cellpadding="0" cellspacing="0" border="0"><tr class="">
<th scope="row"><a href="Client_stop_.html">stop()</a></th>
<td>Disconnects from the server</td>
</tr>
<tr class="">
<th scope="row"><a href="Client_active_.html">active()</a></th>
<td>Returns true if this client is still active</td>
</tr>
<tr class="">
<th scope="row"><a href="Client_ip_.html">ip()</a></th>
<td>Returns the IP address of the machine as a String</td>
</tr>
<tr class="">
<th scope="row"><a href="Client_available_.html">available()</a></th>
<td>Returns the number of bytes in the buffer waiting to be read</td>
</tr>
<tr class="">
<th scope="row"><a href="Client_clear_.html">clear()</a></th>
<td>Clears the buffer</td>
</tr>
<tr class="">
<th scope="row"><a href="Client_read_.html">read()</a></th>
<td>Returns a value from the buffer</td>
</tr>
<tr class="">
<th scope="row"><a href="Client_readChar_.html">readChar()</a></th>
<td>Returns the next byte in the buffer as a char</td>
</tr>
<tr class="">
<th scope="row"><a href="Client_readBytes_.html">readBytes()</a></th>
<td>Reads everything in the buffer</td>
</tr>
<tr class="">
<th scope="row"><a href="Client_readBytesUntil_.html">readBytesUntil()</a></th>
<td>Reads from the buffer of bytes up to and including a particular character</td>
</tr>
<tr class="">
<th scope="row"><a href="Client_readString_.html">readString()</a></th>
<td>Returns the buffer as a String</td>
</tr>
<tr class="">
<th scope="row"><a href="Client_readStringUntil_.html">readStringUntil()</a></th>
<td>Returns the buffer as a String up to and including a particular character</td>
</tr>
<tr class="">
<th scope="row"><a href="Client_write_.html">write()</a></th>
<td>Writes bytes, chars, ints, bytes[], Strings</td>
</tr></table></td></tr>
<tr class=""><th scope="row">Constructor</th><td><pre>Client(<kbd>parent</kbd>, <kbd>host</kbd>, <kbd>port</kbd>)
Client(<kbd>parent</kbd>, <kbd>socket</kbd>)
</pre></td></tr>
<tr class=""> <th scope="row">Parameters</th><td><table cellpadding="0" cellspacing="0" border="0"><tr class="">
<th scope="row" class="code">parent</th>
<td>PApplet: typically use "this"</td>
</tr>
<tr class="">
<th scope="row" class="code">host</th>
<td>String: address of the server</td>
</tr>
<tr class="">
<th scope="row" class="code">port</th>
<td>int: port to read/write from on the server</td>
</tr>
<tr class="">
<th scope="row" class="code">socket</th>
<td>Socket: any object of type Socket</td>
</tr></table></td> </tr>
<tr class=""><th scope="row">Related</th><td><a class="code" href="clientEvent_.html">clientEvent()</a><br /></td></tr>
</table>
Updated on April 30, 2017 02:33:21pm EDT<br /><br />
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<title>Client::active() \ Language (API) \ Processing 2+</title>
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<p class="ref-notice">This reference is for Processing 3.0+. If you have a previous version, use the reference included with your software in the Help menu. If you see any errors or have suggestions, <a href="https://github.com/processing/processing-docs/issues?state=open">please let us know</a>. If you prefer a more technical reference, visit the <a href="http://processing.github.io/processing-javadocs/core/">Processing Core Javadoc</a> and <a href="http://processing.github.io/processing-javadocs/libraries/">Libraries Javadoc</a>.</p>
<table cellpadding="0" cellspacing="0" border="0" class="ref-item">
<tr class=""><th scope="row">Class</th><td><p><a href="Client.html">Client</a></p></td></tr>
<tr class="name-row">
<th scope="row">Name</th>
<td><h3>active()</h3></td>
</tr>
<tr class="">
<tr class=""><th scope="row">Examples</th><td><div class="example"><pre >
import processing.net.*;
Client myClient;
int dataIn;
void setup() {
size(200, 200);
// Connect to the local machine at port 5204.
// This example will not run if you haven't
// previously started a server on this port.
myClient = new Client(this, "127.0.0.1", 5204);
}
void draw() {
if (myClient.active() == true) {
if (myClient.available() > 0) {
dataIn = myClient.read();
}
} else {
println("Client is not active.");
}
background(dataIn);
}
void mousePressed() {
myClient.stop();
}
</pre></div>
</td></tr>
<tr class="">
<th scope="row">Description</th>
<td>
Returns <b>true</b> if this client is still active and hasn't run into any trouble.
</td>
</tr>
<tr class=""><th scope="row">Syntax</th><td><pre><kbd>client</kbd>.active()</pre></td></tr>
<tr class=""> <th scope="row">Parameters</th><td><table cellpadding="0" cellspacing="0" border="0"><tr class="">
<th scope="row" class="code">client</th>
<td>Client: any variable of type Client</td>
</tr></table></td> </tr>
<tr class=""><th scope="row">Returns</th><td class="code">boolean</td></tr>
</table>
Updated on April 30, 2017 02:33:21pm EDT<br /><br />
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<title>Client::available() \ Language (API) \ Processing 2+</title>
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<table cellpadding="0" cellspacing="0" border="0" class="ref-item">
<tr class=""><th scope="row">Class</th><td><p><a href="Client.html">Client</a></p></td></tr>
<tr class="name-row">
<th scope="row">Name</th>
<td><h3>available()</h3></td>
</tr>
<tr class="">
<tr class=""><th scope="row">Examples</th><td><div class="example"><pre >
import processing.net.*;
Client myClient;
int dataIn;
void setup() {
size(200, 200);
// Connect to the local machine at port 5204.
// This example will not run if you haven't
// previously started a server on this port.
myClient = new Client(this, "127.0.0.1", 5204);
}
void draw() {
if (myClient.available() > 0) {
dataIn = myClient.read();
}
background(dataIn);
}
</pre></div>
</td></tr>
<tr class="">
<th scope="row">Description</th>
<td>
Returns the number of bytes available. When any client has bytes available from the server, it returns the number of bytes.
</td>
</tr>
<tr class=""><th scope="row">Syntax</th><td><pre><kbd>client</kbd>.available()</pre></td></tr>
<tr class=""> <th scope="row">Parameters</th><td><table cellpadding="0" cellspacing="0" border="0"><tr class="">
<th scope="row" class="code">client</th>
<td>Client: any variable of type Client</td>
</tr></table></td> </tr>
<tr class=""><th scope="row">Returns</th><td class="code">int</td></tr>
</table>
Updated on April 30, 2017 02:33:21pm EDT<br /><br />
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<title>Client::clear() \ Language (API) \ Processing 2+</title>
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<p class="ref-notice">This reference is for Processing 3.0+. If you have a previous version, use the reference included with your software in the Help menu. If you see any errors or have suggestions, <a href="https://github.com/processing/processing-docs/issues?state=open">please let us know</a>. If you prefer a more technical reference, visit the <a href="http://processing.github.io/processing-javadocs/core/">Processing Core Javadoc</a> and <a href="http://processing.github.io/processing-javadocs/libraries/">Libraries Javadoc</a>.</p>
<table cellpadding="0" cellspacing="0" border="0" class="ref-item">
<tr class=""><th scope="row">Class</th><td><p><a href="Client.html">Client</a></p></td></tr>
<tr class="name-row">
<th scope="row">Name</th>
<td><h3>clear()</h3></td>
</tr>
<tr class="">
<tr class=""><th scope="row">Examples</th><td><div class="example"><pre >
// Creates a client that listens for input until it gets a
// linefeed and then throws the rest of the input away.
import processing.net.*;
Client myClient;
String inString;
byte interesting = 10;
void setup() {
size (300, 100);
// Connect to the local machine at port 10002.
// This example will not run if you haven't
// previously started a server on this port.
myClient = new Client(this, "127.0.0.1", 10002);
}
void draw() {
if (myClient.available() > 0) {
background(0);
// Read input until we get a byte of value 10 (ASCII linefeed):
inString = myClient.readStringUntil(interesting);
println(inString);
// Throw away the rest of the input:
myClient.clear();
}
}
</pre></div>
</td></tr>
<tr class="">
<th scope="row">Description</th>
<td>
Empty the buffer, removes all the data stored there.
</td>
</tr>
<tr class=""><th scope="row">Syntax</th><td><pre><kbd>client</kbd>.clear()</pre></td></tr>
<tr class=""> <th scope="row">Parameters</th><td><table cellpadding="0" cellspacing="0" border="0"><tr class="">
<th scope="row" class="code">client</th>
<td>Client: any variable of type Client</td>
</tr></table></td> </tr>
<tr class=""><th scope="row">Returns</th><td class="code">void</td></tr>
</table>
Updated on April 30, 2017 02:33:21pm EDT<br /><br />
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<title>Client::ip() \ Language (API) \ Processing 2+</title>
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<p class="ref-notice">This reference is for Processing 3.0+. If you have a previous version, use the reference included with your software in the Help menu. If you see any errors or have suggestions, <a href="https://github.com/processing/processing-docs/issues?state=open">please let us know</a>. If you prefer a more technical reference, visit the <a href="http://processing.github.io/processing-javadocs/core/">Processing Core Javadoc</a> and <a href="http://processing.github.io/processing-javadocs/libraries/">Libraries Javadoc</a>.</p>
<table cellpadding="0" cellspacing="0" border="0" class="ref-item">
<tr class=""><th scope="row">Class</th><td><p><a href="Client.html">Client</a></p></td></tr>
<tr class="name-row">
<th scope="row">Name</th>
<td><h3>ip()</h3></td>
</tr>
<tr class="">
<tr class=""><th scope="row">Examples</th><td><div class="example"><pre >
import processing.net.*;
Client myClient;
void setup() {
size(200, 200);
// Connect to the local machine at port 5204.
// This example will not run if you haven't
// previously started a server on this port.
myClient = new Client(this, "127.0.0.1", 5204);
println(myClient.ip());
}
</pre></div>
</td></tr>
<tr class="">
<th scope="row">Description</th>
<td>
Returns the IP address of the computer to which the Client is attached.
</td>
</tr>
<tr class=""><th scope="row">Syntax</th><td><pre><kbd>client</kbd>.ip()</pre></td></tr>
<tr class=""> <th scope="row">Parameters</th><td><table cellpadding="0" cellspacing="0" border="0"><tr class="">
<th scope="row" class="code">client</th>
<td>Client: any variable of type Client</td>
</tr></table></td> </tr>
<tr class=""><th scope="row">Returns</th><td class="code">String</td></tr>
</table>
Updated on April 30, 2017 02:33:21pm EDT<br /><br />
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<title>Client::readBytesUntil() \ Language (API) \ Processing 2+</title>
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<p class="ref-notice">This reference is for Processing 3.0+. If you have a previous version, use the reference included with your software in the Help menu. If you see any errors or have suggestions, <a href="https://github.com/processing/processing-docs/issues?state=open">please let us know</a>. If you prefer a more technical reference, visit the <a href="http://processing.github.io/processing-javadocs/core/">Processing Core Javadoc</a> and <a href="http://processing.github.io/processing-javadocs/libraries/">Libraries Javadoc</a>.</p>
<table cellpadding="0" cellspacing="0" border="0" class="ref-item">
<tr class=""><th scope="row">Class</th><td><p><a href="Client.html">Client</a></p></td></tr>
<tr class="name-row">
<th scope="row">Name</th>
<td><h3>readBytesUntil()</h3></td>
</tr>
<tr class="">
<tr class=""><th scope="row">Examples</th><td><div class="example"><pre >
// Creates a client that listens for input
// until it gets a linefeed character, and puts
// the bytes it gets into a byte[] buffer.
import processing.net.*;
Client myClient;
byte[] byteBuffer = new byte[12];
byte interesting = 10;
void setup() {
size (300, 100);
// Connect to the local machine at port 10002.
// This example will not run if you haven't
// previously started a server on this port.
myClient = new Client(this, "127.0.0.1", 10002);
}
void draw() {
if (myClient.available() > 0) {
background(0);
// Read until we get a linefeed
int byteCount = myClient.readBytesUntil(interesting, byteBuffer);
// Convert the byte array to a String
String myString = new String(byteBuffer);
// Display the string
println(myString);
}
}
</pre></div>
</td></tr>
<tr class="">
<th scope="row">Description</th>
<td>
Reads from the port into a buffer of bytes up to and including a particular character. If the character isn't in the buffer, 'null' is returned. The version with no <b>byteBuffer</b> parameter returns a byte array of all data up to and including the <b>interesting</b> byte. This is not efficient, but is easy to use. The version with the <b>byteBuffer</b> parameter is more memory and time efficient. It grabs the data in the buffer and puts it into the byte array passed in and returns an int value for the number of bytes read. If the byte buffer is not large enough, -1 is returned and an error is printed to the message area. If nothing is in the buffer, 0 is returned.
</td>
</tr>
<tr class=""><th scope="row">Syntax</th><td><pre><kbd>client</kbd>.readBytesUntil(<kbd>interesting</kbd>)
<kbd>client</kbd>.readBytesUntil(<kbd>interesting</kbd>, <kbd>byteBuffer</kbd>)</pre></td></tr>
<tr class=""> <th scope="row">Parameters</th><td><table cellpadding="0" cellspacing="0" border="0"><tr class="">
<th scope="row" class="code">client</th>
<td>Client: any variable of type Client</td>
</tr>
<tr class="">
<th scope="row" class="code">interesting</th>
<td>int: character designated to mark the end of the data</td>
</tr>
<tr class="">
<th scope="row" class="code">byteBuffer</th>
<td>byte[]: passed in byte array to be altered</td>
</tr></table></td> </tr>
<tr class=""><th scope="row">Returns</th><td class="code">byte[] or int</td></tr>
</table>
Updated on April 30, 2017 02:33:21pm EDT<br /><br />
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<p class="ref-notice">This reference is for Processing 3.0+. If you have a previous version, use the reference included with your software in the Help menu. If you see any errors or have suggestions, <a href="https://github.com/processing/processing-docs/issues?state=open">please let us know</a>. If you prefer a more technical reference, visit the <a href="http://processing.github.io/processing-javadocs/core/">Processing Core Javadoc</a> and <a href="http://processing.github.io/processing-javadocs/libraries/">Libraries Javadoc</a>.</p>
<table cellpadding="0" cellspacing="0" border="0" class="ref-item">
<tr class=""><th scope="row">Class</th><td><p><a href="Client.html">Client</a></p></td></tr>
<tr class="name-row">
<th scope="row">Name</th>
<td><h3>readBytes()</h3></td>
</tr>
<tr class="">
<tr class=""><th scope="row">Examples</th><td><div class="example"><pre >
// Creates a client that listens for input and puts
// the bytes it gets into a byte[] buffer.
import processing.net.*;
Client myClient;
byte[] byteBuffer = new byte[10];
void setup() {
size (300, 100);
// Connect to the local machine at port 10002.
// This example will not run if you haven't
// previously started a server on this port.
myClient = new Client(this, "127.0.0.1", 10002);
}
void draw() {
if (myClient.available() > 0) {
background(0);
// Read in the bytes
int byteCount = myClient.readBytes(byteBuffer);
if (byteCount > 0 ) {
// Convert the byte array to a String
String myString = new String(byteBuffer);
// Show it text area
println(myString);
}
}
}
</pre></div>
</td></tr>
<tr class="">
<th scope="row">Description</th>
<td>
Reads a group of bytes from the buffer. The version with no parameters returns a byte array of all data in the buffer. This is not efficient, but is easy to use. The version with the <b>byteBuffer</b> parameter is more memory and time efficient. It grabs the data in the buffer and puts it into the byte array passed in and returns an int value for the number of bytes read. If more bytes are available than can fit into the <b>byteBuffer</b>, only those that fit are read.
</td>
</tr>
<tr class=""><th scope="row">Syntax</th><td><pre><kbd>client</kbd>.readBytes()
<kbd>client</kbd>.readBytes(<kbd>max</kbd>)
<kbd>client</kbd>.readBytes(<kbd>bytebuffer</kbd>)</pre></td></tr>
<tr class=""> <th scope="row">Parameters</th><td><table cellpadding="0" cellspacing="0" border="0"><tr class="">
<th scope="row" class="code">client</th>
<td>Client: any variable of type Client</td>
</tr>
<tr class="">
<th scope="row" class="code">max</th>
<td>int: the maximum number of bytes to read</td>
</tr>
<tr class="">
<th scope="row" class="code">bytebuffer</th>
<td>byte[]: passed in byte array to be altered</td>
</tr></table></td> </tr>
<tr class=""><th scope="row">Returns</th><td class="code">byte[] or int</td></tr>
</table>
Updated on April 30, 2017 02:33:21pm EDT<br /><br />
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<title>Client::readChar() \ Language (API) \ Processing 2+</title>
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<p class="ref-notice">This reference is for Processing 3.0+. If you have a previous version, use the reference included with your software in the Help menu. If you see any errors or have suggestions, <a href="https://github.com/processing/processing-docs/issues?state=open">please let us know</a>. If you prefer a more technical reference, visit the <a href="http://processing.github.io/processing-javadocs/core/">Processing Core Javadoc</a> and <a href="http://processing.github.io/processing-javadocs/libraries/">Libraries Javadoc</a>.</p>
<table cellpadding="0" cellspacing="0" border="0" class="ref-item">
<tr class=""><th scope="row">Class</th><td><p><a href="Client.html">Client</a></p></td></tr>
<tr class="name-row">
<th scope="row">Name</th>
<td><h3>readChar()</h3></td>
</tr>
<tr class="">
<tr class=""><th scope="row">Examples</th><td><div class="example"><pre >
import processing.net.*;
Client myClient;
char charIn;
void setup() {
size(200, 200);
myClient = new Client(this, "127.0.0.1", 5204);
}
void draw() {
if (myClient.available() > 0) {
charIn = myClient.readChar();
println(dataIn);
}
}
</pre></div>
</td></tr>
<tr class="">
<th scope="row">Description</th>
<td>
Returns the next byte in the buffer as a char. Returns <b>-1</b> or <b>0xffff</b> if nothing is there.
</td>
</tr>
<tr class=""><th scope="row">Syntax</th><td><pre><kbd>client</kbd>.readChar()</pre></td></tr>
<tr class=""> <th scope="row">Parameters</th><td><table cellpadding="0" cellspacing="0" border="0"><tr class="">
<th scope="row" class="code">client</th>
<td>Client: any variable of type Client</td>
</tr></table></td> </tr>
<tr class=""><th scope="row">Returns</th><td class="code">char</td></tr>
</table>
Updated on April 30, 2017 02:33:21pm EDT<br /><br />
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<title>Client::readStringUntil() \ Language (API) \ Processing 2+</title>
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<p class="ref-notice">This reference is for Processing 3.0+. If you have a previous version, use the reference included with your software in the Help menu. If you see any errors or have suggestions, <a href="https://github.com/processing/processing-docs/issues?state=open">please let us know</a>. If you prefer a more technical reference, visit the <a href="http://processing.github.io/processing-javadocs/core/">Processing Core Javadoc</a> and <a href="http://processing.github.io/processing-javadocs/libraries/">Libraries Javadoc</a>.</p>
<table cellpadding="0" cellspacing="0" border="0" class="ref-item">
<tr class=""><th scope="row">Class</th><td><p><a href="Client.html">Client</a></p></td></tr>
<tr class="name-row">
<th scope="row">Name</th>
<td><h3>readStringUntil()</h3></td>
</tr>
<tr class="">
<tr class=""><th scope="row">Examples</th><td><div class="example"><pre >
// Creates a client that listens for input until it
// gets a linefeed character,and puts the bytes it gets
// into a byte[] buffer.
import processing.net.*;
Client myClient;
String inString;
byte interesting = 10;
void setup() {
size (300, 100);
// Connect to the local machine at port 10002.
// This example will not run if you haven't
// previously started a server on this port.
myClient = new Client(this, "127.0.0.1", 10002);
}
void draw() {
if (myClient.available() > 0) {
background(0);
inString = myClient.readStringUntil(interesting);
println(inString);
}
}
</pre></div>
</td></tr>
<tr class="">
<th scope="row">Description</th>
<td>
Combination of <b>readBytesUntil()</b> and <b>readString()</b>. Returns <b>null</b> if it doesn't find what you're looking for.
</td>
</tr>
<tr class=""><th scope="row">Syntax</th><td><pre><kbd>client</kbd>.readStringUntil(<kbd>interesting</kbd>)</pre></td></tr>
<tr class=""> <th scope="row">Parameters</th><td><table cellpadding="0" cellspacing="0" border="0"><tr class="">
<th scope="row" class="code">client</th>
<td>Client: any variable of type Client</td>
</tr>
<tr class="">
<th scope="row" class="code">interesting</th>
<td>int: character designated to mark the end of the data</td>
</tr></table></td> </tr>
<tr class=""><th scope="row">Returns</th><td class="code">String</td></tr>
</table>
Updated on April 30, 2017 02:33:21pm EDT<br /><br />
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<title>Client::readString() \ Language (API) \ Processing 2+</title>
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<p class="ref-notice">This reference is for Processing 3.0+. If you have a previous version, use the reference included with your software in the Help menu. If you see any errors or have suggestions, <a href="https://github.com/processing/processing-docs/issues?state=open">please let us know</a>. If you prefer a more technical reference, visit the <a href="http://processing.github.io/processing-javadocs/core/">Processing Core Javadoc</a> and <a href="http://processing.github.io/processing-javadocs/libraries/">Libraries Javadoc</a>.</p>
<table cellpadding="0" cellspacing="0" border="0" class="ref-item">
<tr class=""><th scope="row">Class</th><td><p><a href="Client.html">Client</a></p></td></tr>
<tr class="name-row">
<th scope="row">Name</th>
<td><h3>readString()</h3></td>
</tr>
<tr class="">
<tr class=""><th scope="row">Examples</th><td><div class="example"><pre >
import processing.net.*;
Client myClient;
String inString;
byte interesting = 10;
void setup() {
size (300, 100);
// Connect to the local machine at port 10002.
// This example will not run if you haven't
// previously started a server on this port.
myClient = new Client(this, "127.0.0.1", 10002);
}
void draw() {
if (myClient.available() > 0) {
background(0);
inString = myClient.readString();
println(inString);
}
}
</pre></div>
</td></tr>
<tr class="">
<th scope="row">Description</th>
<td>
Returns the all the data from the buffer as a String. This method assumes the incoming characters are ASCII. If you want to transfer Unicode data, first convert the String to a byte stream in the representation of your choice (i.e. UTF8 or two-byte Unicode data), and send it as a byte array.
</td>
</tr>
<tr class=""><th scope="row">Syntax</th><td><pre><kbd>client</kbd>.readString()</pre></td></tr>
<tr class=""> <th scope="row">Parameters</th><td><table cellpadding="0" cellspacing="0" border="0"><tr class="">
<th scope="row" class="code">client</th>
<td>Client: any variable of type Client</td>
</tr></table></td> </tr>
<tr class=""><th scope="row">Returns</th><td class="code">String</td></tr>
</table>
Updated on April 30, 2017 02:33:21pm EDT<br /><br />
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<title>Client::read() \ Language (API) \ Processing 2+</title>
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<p class="ref-notice">This reference is for Processing 3.0+. If you have a previous version, use the reference included with your software in the Help menu. If you see any errors or have suggestions, <a href="https://github.com/processing/processing-docs/issues?state=open">please let us know</a>. If you prefer a more technical reference, visit the <a href="http://processing.github.io/processing-javadocs/core/">Processing Core Javadoc</a> and <a href="http://processing.github.io/processing-javadocs/libraries/">Libraries Javadoc</a>.</p>
<table cellpadding="0" cellspacing="0" border="0" class="ref-item">
<tr class=""><th scope="row">Class</th><td><p><a href="Client.html">Client</a></p></td></tr>
<tr class="name-row">
<th scope="row">Name</th>
<td><h3>read()</h3></td>
</tr>
<tr class="">
<tr class=""><th scope="row">Examples</th><td><div class="example"><pre >
import processing.net.*;
Client myClient;
int dataIn;
void setup() {
size(200, 200);
// Connect to the local machine at port 5204.
// This example will not run if you haven't
// previously started a server on this port.
myClient = new Client(this, "127.0.0.1", 5204);
}
void draw() {
if (myClient.available() > 0) {
dataIn = myClient.read();
}
background(dataIn);
}
</pre></div>
</td></tr>
<tr class="">
<th scope="row">Description</th>
<td>
Returns a number between 0 and 255 for the next byte that's waiting in the buffer. Returns -1 if there is no byte, although this should be avoided by first cheacking <b>available()</b> to see if any data is available.
</td>
</tr>
<tr class=""><th scope="row">Syntax</th><td><pre><kbd>client</kbd>.read()</pre></td></tr>
<tr class=""> <th scope="row">Parameters</th><td><table cellpadding="0" cellspacing="0" border="0"><tr class="">
<th scope="row" class="code">client</th>
<td>Client: any variable of type Client</td>
</tr></table></td> </tr>
<tr class=""><th scope="row">Returns</th><td class="code">int</td></tr>
</table>
Updated on April 30, 2017 02:33:21pm EDT<br /><br />
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<title>Client::stop() \ Language (API) \ Processing 2+</title>
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<table cellpadding="0" cellspacing="0" border="0" class="ref-item">
<tr class=""><th scope="row">Class</th><td><p><a href="Client.html">Client</a></p></td></tr>
<tr class="name-row">
<th scope="row">Name</th>
<td><h3>stop()</h3></td>
</tr>
<tr class="">
<tr class=""><th scope="row">Examples</th><td><div class="example"><pre >
import processing.net.*;
Client myClient;
int dataIn;
void setup() {
size(200, 200);
// Connect to the local machine at port 5204.
// This example will not run if you haven't
// previously started a server on this port.
myClient = new Client(this, "127.0.0.1", 5204);
println(myClient.ip());
}
void draw() {
if (myClient.available() > 0) {
dataIn = myClient.read();
}
background(dataIn);
}
void mousePressed() {
myClient.stop();
}
</pre></div>
</td></tr>
<tr class="">
<th scope="row">Description</th>
<td>
Disconnects from the server. Use to shut the connection when you're finished with the Client.
</td>
</tr>
<tr class=""><th scope="row">Syntax</th><td><pre><kbd>client</kbd>.stop()</pre></td></tr>
<tr class=""> <th scope="row">Parameters</th><td><table cellpadding="0" cellspacing="0" border="0"><tr class="">
<th scope="row" class="code">client</th>
<td>Client: any variable of type Client</td>
</tr></table></td> </tr>
<tr class=""><th scope="row">Returns</th><td class="code">void</td></tr>
</table>
Updated on April 30, 2017 02:33:21pm EDT<br /><br />
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<title>Client::write() \ Language (API) \ Processing 2+</title>
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<p class="ref-notice">This reference is for Processing 3.0+. If you have a previous version, use the reference included with your software in the Help menu. If you see any errors or have suggestions, <a href="https://github.com/processing/processing-docs/issues?state=open">please let us know</a>. If you prefer a more technical reference, visit the <a href="http://processing.github.io/processing-javadocs/core/">Processing Core Javadoc</a> and <a href="http://processing.github.io/processing-javadocs/libraries/">Libraries Javadoc</a>.</p>
<table cellpadding="0" cellspacing="0" border="0" class="ref-item">
<tr class=""><th scope="row">Class</th><td><p><a href="Client.html">Client</a></p></td></tr>
<tr class="name-row">
<th scope="row">Name</th>
<td><h3>write()</h3></td>
</tr>
<tr class="">
<tr class=""><th scope="row">Examples</th><td><div class="example"><pre >
// Creates a client that sends input to a server
import processing.net.*;
Client myClient;
int clicks;
void setup() {
// Connect to the local machine at port 10002.
// This example will not run if you haven't
// previously started a server on this port.
myClient = new Client(this, "127.0.0.1", 10002);
// Say hello
myClient.write("Hi there");
}
void mouseReleased() {
// Count the number of mouse clicks:
clicks++;
// Tell the server:
myClient.write("Mouse pressed " + clicks + " times.&#92;n");
}
void draw() {
// Change the background if the mouse is pressed
if (mousePressed) {
background(255);
} else {
background(0);
}
}
</pre></div>
</td></tr>
<tr class="">
<th scope="row">Description</th>
<td>
Writes data to a server specified when constructing the client, or writes data to the specific client obtained from the Server <b>available()</b> method.
</td>
</tr>
<tr class=""><th scope="row">Syntax</th><td><pre><kbd>client</kbd>.write(<kbd>data</kbd>)</pre></td></tr>
<tr class=""> <th scope="row">Parameters</th><td><table cellpadding="0" cellspacing="0" border="0"><tr class="">
<th scope="row" class="code">client</th>
<td>Client: any variable of type Client</td>
</tr>
<tr class="">
<th scope="row" class="code">data</th>
<td>String, byte[], or int: data to write</td>
</tr></table></td> </tr>
<tr class=""><th scope="row">Returns</th><td class="code">void</td></tr>
</table>
Updated on April 30, 2017 02:33:21pm EDT<br /><br />
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
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<title>Server \ Language (API) \ Processing 2+</title>
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<p class="ref-notice">This reference is for Processing 3.0+. If you have a previous version, use the reference included with your software in the Help menu. If you see any errors or have suggestions, <a href="https://github.com/processing/processing-docs/issues?state=open">please let us know</a>. If you prefer a more technical reference, visit the <a href="http://processing.github.io/processing-javadocs/core/">Processing Core Javadoc</a> and <a href="http://processing.github.io/processing-javadocs/libraries/">Libraries Javadoc</a>.</p>
<table cellpadding="0" cellspacing="0" border="0" class="ref-item">
<tr class="name-row">
<th scope="row">Name</th>
<td><h3>Server</h3></td>
</tr>
<tr class=""><th scope="row">Examples</th><td><div class="example"><pre >
import processing.net.*;
Server myServer;
int val = 0;
void setup() {
size(200, 200);
// Starts a myServer on port 5204
myServer = new Server(this, 5204);
}
void draw() {
val = (val + 1) % 255;
background(val);
myServer.write(val);
}
</pre></div>
</td></tr>
<tr class="">
<th scope="row">Description</th>
<td>
A server sends and receives data to and from its associated clients (other programs connected to it). When a server is started, it begins listening for connections on the port specified by the <b>port</b> parameter. Computers have many ports for transferring data and some are commonly used so be sure to not select one of these. For example, web servers usually use port 80 and POP mail uses port 110.
</td>
</tr>
<tr class=""><th scope="row">Methods</th><td><table cellpadding="0" cellspacing="0" border="0"><tr class="">
<th scope="row"><a href="Server_disconnect_.html">disconnect()</a></th>
<td>Disconnect a particular client.</td>
</tr>
<tr class="">
<th scope="row"><a href="Server_active_.html">active()</a></th>
<td>Return true if this server is still active.</td>
</tr>
<tr class="">
<th scope="row"><a href="Server_available_.html">available()</a></th>
<td>Returns the next client in line with a new message.</td>
</tr>
<tr class="">
<th scope="row"><a href="Server_stop_.html">stop()</a></th>
<td>Disconnects all clients and stops the server.</td>
</tr>
<tr class="">
<th scope="row"><a href="Server_write_.html">write()</a></th>
<td>Writes data to all connected clients</td>
</tr></table></td></tr>
<tr class=""><th scope="row">Constructor</th><td><pre>Server(<kbd>parent</kbd>, <kbd>port</kbd>)
Server(<kbd>parent</kbd>, <kbd>port</kbd>, <kbd>host</kbd>)
</pre></td></tr>
<tr class=""> <th scope="row">Parameters</th><td><table cellpadding="0" cellspacing="0" border="0"><tr class="">
<th scope="row" class="code">parent</th>
<td>PApplet: typically use "this"</td>
</tr>
<tr class="">
<th scope="row" class="code">port</th>
<td>int: port used to transfer data</td>
</tr>
<tr class="">
<th scope="row" class="code">parent</th>
<td>PApplet: typically use "this"</td>
</tr>
<tr class="">
<th scope="row" class="code">port</th>
<td>int: port used to transfer data</td>
</tr>
<tr class="">
<th scope="row" class="code">host</th>
<td>String: when multiple NICs are in use, the ip (or name) to bind from</td>
</tr></table></td> </tr>
</table>
Updated on April 30, 2017 02:33:21pm EDT<br /><br />
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<title>Server::active() \ Language (API) \ Processing 2+</title>
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<p class="ref-notice">This reference is for Processing 3.0+. If you have a previous version, use the reference included with your software in the Help menu. If you see any errors or have suggestions, <a href="https://github.com/processing/processing-docs/issues?state=open">please let us know</a>. If you prefer a more technical reference, visit the <a href="http://processing.github.io/processing-javadocs/core/">Processing Core Javadoc</a> and <a href="http://processing.github.io/processing-javadocs/libraries/">Libraries Javadoc</a>.</p>
<table cellpadding="0" cellspacing="0" border="0" class="ref-item">
<tr class=""><th scope="row">Class</th><td><p><a href="Server.html">Server</a></p></td></tr>
<tr class="name-row">
<th scope="row">Name</th>
<td><h3>active()</h3></td>
</tr>
<tr class="">
<tr class=""><th scope="row">Examples</th><td><div class="example"><pre >
import processing.net.*;
Server myServer;
int val = 0;
void setup() {
size(200, 200);
// Starts a myServer on port 5204
myServer = new Server(this, 5204);
}
void draw() {
val = (val + 1) % 255;
background(val);
if (myServer.active() == true) {
myServer.write(val);
} else {
println("Server is not active.");
}
}
void mousePressed() {
myServer.stop();
}
</pre></div>
</td></tr>
<tr class="">
<th scope="row">Description</th>
<td>
Returns <b>true</b> if this server is still active and hasn't run into any trouble.
</td>
</tr>
<tr class=""><th scope="row">Syntax</th><td><pre><kbd>server</kbd>.active()</pre></td></tr>
<tr class=""> <th scope="row">Parameters</th><td><table cellpadding="0" cellspacing="0" border="0"><tr class="">
<th scope="row" class="code">server</th>
<td>Server: any variable of type Server</td>
</tr></table></td> </tr>
<tr class=""><th scope="row">Returns</th><td class="code">boolean</td></tr>
</table>
Updated on April 30, 2017 02:33:21pm EDT<br /><br />
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<table cellpadding="0" cellspacing="0" border="0" class="ref-item">
<tr class=""><th scope="row">Class</th><td><p><a href="Server.html">Server</a></p></td></tr>
<tr class="name-row">
<th scope="row">Name</th>
<td><h3>available()</h3></td>
</tr>
<tr class="">
<tr class=""><th scope="row">Examples</th><td><div class="example"><pre >
import processing.net.*;
int port = 10002;
Server myServer;
void setup()
{
size(400, 400);
background(0);
myServer = new Server(this, port);
}
void draw()
{
// Get the next available client
Client thisClient = myServer.available();
// If the client is not null, and says something, display what it said
if (thisClient !=null) {
String whatClientSaid = thisClient.readString();
if (whatClientSaid != null) {
println(thisClient.ip() + "t" + whatClientSaid);
}
}
}
</pre></div>
</td></tr>
<tr class="">
<th scope="row">Description</th>
<td>
Returns the next client in line with a new message.
</td>
</tr>
<tr class=""><th scope="row">Syntax</th><td><pre><kbd>server</kbd>.available()</pre></td></tr>
<tr class=""> <th scope="row">Parameters</th><td><table cellpadding="0" cellspacing="0" border="0"><tr class="">
<th scope="row" class="code">server</th>
<td>Server: any variable of type Server</td>
</tr></table></td> </tr>
<tr class=""><th scope="row">Returns</th><td class="code">Client</td></tr>
</table>
Updated on April 30, 2017 02:33:21pm EDT<br /><br />
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<p class="ref-notice">This reference is for Processing 3.0+. If you have a previous version, use the reference included with your software in the Help menu. If you see any errors or have suggestions, <a href="https://github.com/processing/processing-docs/issues?state=open">please let us know</a>. If you prefer a more technical reference, visit the <a href="http://processing.github.io/processing-javadocs/core/">Processing Core Javadoc</a> and <a href="http://processing.github.io/processing-javadocs/libraries/">Libraries Javadoc</a>.</p>
<table cellpadding="0" cellspacing="0" border="0" class="ref-item">
<tr class=""><th scope="row">Class</th><td><p><a href="Server.html">Server</a></p></td></tr>
<tr class="name-row">
<th scope="row">Name</th>
<td><h3>disconnect()</h3></td>
</tr>
<tr class="">
<tr class=""><th scope="row">Examples</th><td><div class="example"><pre >
import processing.net.*;
int port = 10002;
Server myServer;
void setup()
{
size(400, 400);
background(0);
myServer = new Server(this, port);
}
void draw()
{
// Get the next available client
Client thisClient = myServer.available();
// If the client is not null, and says something, display what it said:
if (thisClient !=null) {
String whatClientSaid = thisClient.readString();
// If the client says "exit", disconnect it
if (whatClientSaid.equals("exitrn")) {
thisClient.write("You will be disconnected now.rn");
println(thisClient.ip() + "t has been disconnected");
myServer.disconnect(thisClient);
}
}
}
</pre></div>
</td></tr>
<tr class="">
<th scope="row">Description</th>
<td>
Disconnect a particular client.
</td>
</tr>
<tr class=""><th scope="row">Syntax</th><td><pre><kbd>server</kbd>.disconnect(<kbd>client</kbd>)</pre></td></tr>
<tr class=""> <th scope="row">Parameters</th><td><table cellpadding="0" cellspacing="0" border="0"><tr class="">
<th scope="row" class="code">server</th>
<td>Server: any variable of type Server</td>
</tr>
<tr class="">
<th scope="row" class="code">client</th>
<td>Client: the client to disconnect</td>
</tr></table></td> </tr>
<tr class=""><th scope="row">Returns</th><td class="code">void</td></tr>
</table>
Updated on April 30, 2017 02:33:21pm EDT<br /><br />
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<title>ip() \ Language (API) \ Processing 2+</title>
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<table cellpadding="0" cellspacing="0" border="0" class="ref-item">
<tr class="name-row">
<th scope="row">Name</th>
<td><h3>ip()</h3></td>
</tr>
<tr class="">
<tr class=""><th scope="row">Examples</th><td><div class="example"><pre >
// Bug note: stopping the server produces an unrecoverable error:
// "java.net.SocketException: Socket closed
// at java.net.PlainSocketImpl.socketAccept(Native Method)"
import processing.net.*;
int port = 10002;
boolean myServerRunning;
Server myServer;
void setup() {
size(400, 400);
background(0);
myServerRunning = false;
println("Server Running:" + "t" + myServerRunning);
}
void draw() {
// Nothing happening here, everything happens in mousePressed()
}
void mousePressed() {
// If the mouse clicked the myServer changes status
println("click");
if (myServerRunning) {
// N.B. This produces an error which kills the sketch.
myServerRunning = false;
myServer.stop();
myServer = null;
}
else {
myServer = new Server(this, port); // Starts a server on port 10002
myServerRunning = true;
println(Server.ip());
}
background(0);
println("Server Status:" + "t" + myServerRunning);
}
</pre></div>
</td></tr>
<tr class="">
<th scope="row">Description</th>
<td>
Returns the IP address of the server. This method is static, so it's run with the code <b>Server.ip()</b>, rather can calling the <b>ip()</b> method of an object created from the Server class.<br />
<br />
Note that the address may be part of a <a href="http://en.wikipedia.org/wiki/Private_network">private network</a> and only accessible to other machines within the same network. In other cases, a publicly accessible address may be returned (though additional router configuration work may be needed to route connections to your machine). In either case, it depends on how the network you connect to is configured and (more rarely) on the network settings of your machine.
</td>
</tr>
</table>
Updated on April 30, 2017 02:33:21pm EDT<br /><br />
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<title>Server::stop() \ Language (API) \ Processing 2+</title>
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<p class="ref-notice">This reference is for Processing 3.0+. If you have a previous version, use the reference included with your software in the Help menu. If you see any errors or have suggestions, <a href="https://github.com/processing/processing-docs/issues?state=open">please let us know</a>. If you prefer a more technical reference, visit the <a href="http://processing.github.io/processing-javadocs/core/">Processing Core Javadoc</a> and <a href="http://processing.github.io/processing-javadocs/libraries/">Libraries Javadoc</a>.</p>
<table cellpadding="0" cellspacing="0" border="0" class="ref-item">
<tr class=""><th scope="row">Class</th><td><p><a href="Server.html">Server</a></p></td></tr>
<tr class="name-row">
<th scope="row">Name</th>
<td><h3>stop()</h3></td>
</tr>
<tr class="">
<tr class=""><th scope="row">Examples</th><td><div class="example"><pre >
// Bug note: stopping the server produces an unrecoverable error:
// "java.net.SocketException: Socket closed
// at java.net.PlainSocketImpl.socketAccept(Native Method)"
import processing.net.*;
int port = 10002;
boolean myServerRunning;
Server myServer;
void setup()
{
size(400, 400);
background(0);
myServerRunning = false;
println("Server Running:" + "t" + myServerRunning);
}
void draw() {
// Nothing happening here, everything happens in mousePressed()
}
void mousePressed()
{
// If the mouse clicked the myServer changes status
println("click");
if (myServerRunning) {
// N.B. This produces an error which kills the applet.
myServerRunning = false;
myServer.stop();
myServer = null;
}
else {
myServer = new Server(this, port); // Starts a server on port 10002
myServerRunning = true;
}
background(0);
println("Server Status:" + "t" + myServerRunning);
}
</pre></div>
</td></tr>
<tr class="">
<th scope="row">Description</th>
<td>
Disconnects all clients and stops the server.
</td>
</tr>
<tr class=""><th scope="row">Syntax</th><td><pre><kbd>server</kbd>.stop()</pre></td></tr>
<tr class=""> <th scope="row">Parameters</th><td><table cellpadding="0" cellspacing="0" border="0"><tr class="">
<th scope="row" class="code">server</th>
<td>Server: any variable of type Server</td>
</tr></table></td> </tr>
<tr class=""><th scope="row">Returns</th><td class="code">void</td></tr>
</table>
Updated on April 30, 2017 02:33:21pm EDT<br /><br />
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<p class="ref-notice">This reference is for Processing 3.0+. If you have a previous version, use the reference included with your software in the Help menu. If you see any errors or have suggestions, <a href="https://github.com/processing/processing-docs/issues?state=open">please let us know</a>. If you prefer a more technical reference, visit the <a href="http://processing.github.io/processing-javadocs/core/">Processing Core Javadoc</a> and <a href="http://processing.github.io/processing-javadocs/libraries/">Libraries Javadoc</a>.</p>
<table cellpadding="0" cellspacing="0" border="0" class="ref-item">
<tr class=""><th scope="row">Class</th><td><p><a href="Server.html">Server</a></p></td></tr>
<tr class="name-row">
<th scope="row">Name</th>
<td><h3>write()</h3></td>
</tr>
<tr class="">
<tr class=""><th scope="row">Examples</th><td><div class="example"><pre >
import processing.net.*;
Server myServer;
int port = 5204;
int val = 0;
void setup() {
size(200, 200);
// Starts a myServer on port 5204
myServer = new Server(this, port);
}
void draw() {
val = val + 1;
background(val);
myServer.write(val);
}
</pre></div>
</td></tr>
<tr class="">
<th scope="row">Description</th>
<td>
Writes a value to all the connected clients. It sends bytes out from the Server object.
</td>
</tr>
<tr class=""><th scope="row">Syntax</th><td><pre><kbd>server</kbd>.write(<kbd>data</kbd>)</pre></td></tr>
<tr class=""> <th scope="row">Parameters</th><td><table cellpadding="0" cellspacing="0" border="0"><tr class="">
<th scope="row" class="code">server</th>
<td>Server: any variable of type Server</td>
</tr>
<tr class="">
<th scope="row" class="code">data</th>
<td>String, byte[], or int: data to write</td>
</tr></table></td> </tr>
<tr class=""><th scope="row">Returns</th><td class="code">void</td></tr>
</table>
Updated on April 30, 2017 02:33:21pm EDT<br /><br />
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<table cellpadding="0" cellspacing="0" border="0" class="ref-item">
<tr class="name-row">
<th scope="row">Name</th>
<td><h3>clientEvent()</h3></td>
</tr>
<tr class="">
<tr class=""><th scope="row">Examples</th><td><div class="example"><pre >
import processing.net.*;
Client myClient;
int dataIn;
void setup() {
size(200, 200);
myClient = new Client(this, "127.0.0.1", 5204);
}
void draw() { } // Empty draw keeps the program running
// ClientEvent message is generated when the server
// sends data to an existing client.
void clientEvent(Client someClient) {
print("Server Says: ");
dataIn = myClient.read();
println(dataIn);
background(dataIn);
}
</pre></div>
</td></tr>
<tr class="">
<th scope="row">Description</th>
<td>
This function is called when a server sends a byte to an existing Client object.
</td>
</tr>
<tr class=""><th scope="row">Syntax</th><td><pre>
void clientEvent(client) {
statements
}
</pre></td></tr>
<tr class=""> <th scope="row">Parameters</th><td><table cellpadding="0" cellspacing="0" border="0"><tr class="">
<th scope="row" class="code">statements</th>
<td>any valid statements</td>
</tr>
<tr class="">
<th scope="row" class="code">client</th>
<td>the client with new data</td>
</tr></table></td> </tr>
<tr class=""><th scope="row">Related</th><td><a class="code" href="Server.html">Server</a><br /></td></tr>
</table>
Updated on April 30, 2017 02:33:21pm EDT<br /><br />
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<table cellpadding="0" cellspacing="0" border="0" class="ref-item">
<tr class="name-row">
<th scope="row">Name</th>
<td><h3>disconnectEvent()</h3></td>
</tr>
<tr class="">
<tr class=""><th scope="row">Examples</th><td><div class="example"><pre >
import processing.net.*;
Client myClient;
int dataIn;
void setup() {
size(200, 200);
myClient = new Client(this, "127.0.0.1", 5204);
}
void draw() { } // Empty draw keeps the program running
// ClientEvent message is generated when a client disconnects.
void disconnectEvent(Client someClient) {
print("Server Says: ");
dataIn = myClient.read();
println(dataIn);
background(dataIn);
}
</pre></div>
</td></tr>
<tr class="">
<th scope="row">Description</th>
<td>
This function is called when a client disconnects.
</td>
</tr>
<tr class=""><th scope="row">Syntax</th><td><pre>
void disconnectEvent(client) {
statements
}
</pre></td></tr>
<tr class=""> <th scope="row">Parameters</th><td><table cellpadding="0" cellspacing="0" border="0"><tr class="">
<th scope="row" class="code">statements</th>
<td>any valid statements</td>
</tr>
<tr class="">
<th scope="row" class="code">client</th>
<td>the client that has disconnected</td>
</tr></table></td> </tr>
<tr class=""><th scope="row">Related</th><td><a class="code" href="Client.html">Client</a><br />
<a class="code" href="Server.html">Server</a><br /></td></tr>
</table>
Updated on April 30, 2017 02:33:21pm EDT<br /><br />
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<title>Net \ Libraries \ Processing 2+</title>
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<div class="content">
<div class="librarytitle"><h3>Network</h3></div>
<div class="full-alt">
<p>
The Network library makes it possible to read and write data across machines on the Internet. It allows the creation <em>clients</em> and <em>servers</em>. A server connects to a list of clients for reading and writing data. A client is able to read and write data to a server.
</p>
<p>
The source code is available on the <a href="https://github.com/processing/processing/tree/master/java/libraries/net">Processing</a> GitHub repository. Please report bugs <a href="https://github.com/processing/processing/issues">here</a>.
</p>
</div>
<div class="colone-alt">
<p>
<h5>Client</h5>
<p>The Client class is used to create Client objects that connect to a server to exchange data.<br />
<br />
<a href="Client.html">Client</a><br />
<a href="Client_available_.html">available()</a><br />
<a href="Client_active_.html">active()</a><br />
<a href="Client_read_.html">read()</a><br />
<a href="Client_readChar_.html">readChar()</a><br />
<a href="Client_readBytes_.html">readBytes()</a><br />
<a href="Client_readBytesUntil_.html">readBytesUntil()</a><br />
<a href="Client_readString_.html">readString()</a><br />
<a href="Client_readStringUntil_.html">readStringUntil()</a> <br />
<a href="Client_write_.html">write()</a><br />
<a href="Client_clear_.html">clear()</a><br />
<a href="Client_stop_.html">stop()</a><br />
<a href="Client_ip_.html">ip()</a><br />
</p>
</p>
</div>
<div class="twocol-alt">
<p>
<h5>Server</h5>
<p>The Server class is used to create Server objects that send and receive data to and from associated clients, the other programs connected to it.<br />
<br />
<a href="Server.html">Server</a><br />
<a href="Server_write_.html">write()</a><br />
<a href="Server_available_.html">available()</a><br />
<a href="Server_active_.html">active()</a><br />
<a href="Server_stop_.html">stop()</a><br />
<a href="Server_disconnect_.html">disconnect()</a><br />
<a href="Server_ip_.html">ip()</a><br />
<br />
</p>
<h5>Network Events</h5>
<p>
<a href="serverEvent_.html">serverEvent()</a><br />
<a href="clientEvent_.html">clientEvent()</a><br />
<a href="disconnectEvent_.html">disconnectEvent()</a><br />
</p>
</p>
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<p class="ref-notice">This reference is for Processing 3.0+. If you have a previous version, use the reference included with your software in the Help menu. If you see any errors or have suggestions, <a href="https://github.com/processing/processing-docs/issues?state=open">please let us know</a>. If you prefer a more technical reference, visit the <a href="http://processing.github.io/processing-javadocs/core/">Processing Core Javadoc</a> and <a href="http://processing.github.io/processing-javadocs/libraries/">Libraries Javadoc</a>.</p>
<table cellpadding="0" cellspacing="0" border="0" class="ref-item">
<tr class="name-row">
<th scope="row">Name</th>
<td><h3>serverEvent()</h3></td>
</tr>
<tr class="">
<tr class=""><th scope="row">Examples</th><td><div class="example"><pre >
// Creates a server that prints new client's IP addresses.
import processing.net.*;
int port = 10002;
Server myServer;
void setup()
{
size(400, 400);
background(0);
myServer = new Server(this, port); // Starts a server on port 10002
}
void draw() {
// Nothing happens here, everything happens inside ServerEvent()
}
// ServerEvent message is generated when a new client connects
// to an existing server.
void serverEvent(Server someServer, Client someClient) {
println("We have a new client: " + someClient.ip());
}
</pre></div>
</td></tr>
<tr class="">
<th scope="row">Description</th>
<td>
The code inside <b>serverEvent()</b> is run when a new client connects to a server that has been created within the program.
</td>
</tr>
<tr class=""><th scope="row">Syntax</th><td><pre>
void serverEvent(server, client) {
statements
}
</pre></td></tr>
<tr class=""> <th scope="row">Parameters</th><td><table cellpadding="0" cellspacing="0" border="0"><tr class="">
<th scope="row" class="code">server</th>
<td>Server: server the client is connecting to</td>
</tr>
<tr class="">
<th scope="row" class="code">client</th>
<td>Client: client connecting to the server</td>
</tr>
<tr class="">
<th scope="row" class="code">statements</th>
<td>any valid statements</td>
</tr></table></td> </tr>
<tr class=""><th scope="row">Related</th><td><a class="code" href="Server.html">Server</a><br /></td></tr>
</table>
Updated on April 30, 2017 02:33:21pm EDT<br /><br />
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