<snapdata remixID="8905377"><project name="L18 TCPIP Student" app="Snap! 5.1, http://snap.berkeley.edu" version="1"><notes>This is a simulation of the Internet Protocol.  There are only two nodes on the network, and their "IP addresses" are "Alice" and "Bob." </notes><thumbnail>data:image/png;base64,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</thumbnail><stage name="Stage" width="480" height="360" costume="0" color="255,255,255,1" tempo="60" threadsafe="true" volume="100" pan="0" lines="round" ternary="true" codify="false" inheritance="false" sublistIDs="false" scheduled="false" 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AoGAAAfoJgkQIECAgAD7AQIECBAgEAgIcIBukgABAgQIHLFxAWmhEwHPAAAAAElFTkSuQmCC</pentrails><costumes><list struct="atomic" id="2"></list></costumes><sounds><list struct="atomic" id="3"></list></sounds><variables></variables><blocks></blocks><scripts></scripts><sprites><sprite name="Alice" idx="1" x="-187.57851463924143" y="-5.327951591457772" heading="90" scale="1" volume="100" pan="0" rotation="1" draggable="true" costume="1" color="80,80,80,1" pen="tip" id="8"><costumes><list id="9"><item><costume name="Bob" center-x="46.5" center-y="86" 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id="10"/></item></list></costumes><sounds><list struct="atomic" id="11"></list></sounds><blocks></blocks><variables><variable name="incoming transmission"><list struct="atomic" id="14"></list></variable><variable name="outgoing transmission"><list id="15"><item><list struct="atomic" id="16">1,7,ABCD</list></item><item><list struct="atomic" id="17">2,7,EFGH</list></item><item><list struct="atomic" id="18">3,7,IJKL</list></item><item><list struct="atomic" id="19">4,7,MNOP</list></item><item><list struct="atomic" id="20">5,7,QRST</list></item><item><list struct="atomic" id="21">6,7,UVWX</list></item><item><list struct="atomic" id="22">7,7,YZ</list></item></list></variable><variable name="name"><l>Alice</l></variable><variable name="start resends"><bool>false</bool></variable></variables><scripts><script x="513" y="391.3333333333333"><block s="receiveInteraction"><l><option>clicked</option></l></block><block s="doAsk"><l>What should I say?</l></block><custom-block s="internet transmit %s to %s"><block s="getLastAnswer"></block><l>Bob</l></custom-block></script><script x="512.6666666666666" y="501.66666666666674"><custom-block s="data $arrowRight list of packets %s"><l>abcdefghijklmnopqrstuvwxyz</l></custom-block></script><script x="514.3333333333334" y="544"><block s="doSetVar"><l>incoming transmission</l><block s="reportNewList"><list></list></block></block><block s="doSetVar"><l>outgoing transmission</l><block s="reportNewList"><list></list></block></block></script><script x="63.33333333333337" y="316"><block s="receiveGo"></block><custom-block s="initialize variables"></custom-block><block s="doSetVar"><l>name</l><l>Alice</l></block><block s="bubble"><l>Click on one of us to send a message.</l></block><block s="doForever"><script><block s="doIf"><block s="reportEquals"><block var="start resends"/><block s="reportBoolean"><l><bool>true</bool></l></block></block><script><custom-block s="ask for resends"></custom-block></script></block></script></block></script><script x="53" y="529"><block s="receiveMessage"><l><option>any message</option></l></block><block s="fork"><block s="reifyScript"><script><custom-block s="read internet data with %s"><block s="getLastMessage"></block></custom-block></script><list></list></block><list></list></block><block s="doIf"><block s="reportEquals"><block var="start resends"/><block s="reportBoolean"><l><bool>false</bool></l></block></block><script><block s="doSetVar"><l>start resends</l><block s="reportBoolean"><l><bool>true</bool></l></block></block></script></block></script><script x="256" y="144"><block s="doUntil"><block s="reportNot"><block s="reportListContainsItem"><block var="incoming transmission"/><l>__</l></block></block><script><block s="doWait"><l>1</l></block><block s="doFor"><l>i</l><l>1</l><block s="reportListLength"><block var="incoming transmission"/></block><script><block s="doIf"><block s="reportEquals"><block s="reportListItem"><l>1</l><block var="incoming transmission"/></block><l>__</l></block><script><custom-block s="Send IP packet %s to %s"><block s="reportNewList"><list><block var="i"/><l>RESEND</l></list></block><l>Bob</l></custom-block></script></block></script></block></script></block></script></scripts></sprite><watcher scope="Alice" var="name" style="normal" x="16.812499999999773" y="67.25000336250008" color="243,118,29" hidden="true"/><watcher scope="Bob" var="name" style="normal" x="16.812499999999773" y="168.12501008750007" color="243,118,29" hidden="true"/><sprite name="Bob" idx="2" x="179.49764498830598" y="-53.84307795274" heading="90" scale="1" volume="100" pan="0" rotation="1" draggable="true" costume="1" color="0,252.45,70.68600000000006,1" pen="tip" id="133"><costumes><list id="134"><item><costume name="boy1-standing" center-x="35" center-y="80" 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" id="135"/></item></list></costumes><sounds><list struct="atomic" id="136"></list></sounds><blocks></blocks><variables><variable name="incoming transmission"><list struct="atomic" id="139">ABCD,EFGH,IJKL,MNOP,QRST,UVWX,YZ</list></variable><variable name="outgoing transmission"><list struct="atomic" id="140"></list></variable><variable name="name"><l>Bob</l></variable><variable name="start resends"><bool>false</bool></variable></variables><scripts><script x="10" y="129.99999999999997"><block s="receiveInteraction"><l><option>clicked</option></l></block><block s="doAsk"><l>What should I say?</l></block><custom-block s="internet transmit %s to %s"><block s="getLastAnswer"></block><l>Alice</l></custom-block></script><script x="14" y="247.33333333333326"><block s="receiveMessage"><l><option>any message</option></l></block><block s="fork"><block s="reifyScript"><script><custom-block s="read internet data with %s"><block s="getLastMessage"></block></custom-block></script><list></list></block><list></list></block><block s="doIf"><block s="reportEquals"><block var="start resends"/><block s="reportBoolean"><l><bool>false</bool></l></block></block><script><block s="doSetVar"><l>start resends</l><block s="reportBoolean"><l><bool>true</bool></l></block></block></script></block></script><script x="313.33333333333337" y="112"><block s="receiveGo"></block><custom-block s="initialize variables"></custom-block><block s="doSetVar"><l>name</l><l>Bob</l></block><block s="doForever"><script><block s="doIf"><block s="reportEquals"><block var="start resends"/><block s="reportBoolean"><l><bool>true</bool></l></block></block><script><custom-block s="ask for resends"></custom-block></script></block></script></block></script></scripts></sprite><watcher scope="Bob" var="start resends" style="normal" x="10.359435173299744" y="10.35943517329909" color="243,118,29"/><watcher scope="Alice" var="start resends" style="normal" x="8" y="38" color="243,118,29"/><watcher scope="Alice" var="incoming transmission" style="normal" x="339.219947916667" y="143.15053618874998" color="243,118,29" extX="80" extY="70"/><watcher scope="Bob" var="outgoing transmission" style="normal" x="160.81249999999977" y="163.68750672500016" color="243,118,29" extX="80" extY="70"/><watcher scope="Alice" var="outgoing transmission" style="normal" x="181.89880936702184" y="275.81242936889396" color="243,118,29" extX="186" extY="137"/><watcher scope="Bob" var="incoming transmission" style="normal" x="416.50333206300866" y="252.08446843021085" color="243,118,29" extX="167" extY="266.00000000000006"/></sprites></stage><hidden></hidden><headers></headers><code></code><blocks><block-definition s="Send IP packet %&apos;packet&apos; to %&apos;sprite&apos;" type="command" category="sensing"><comment x="0" y="0" w="104" collapsed="false">Do not edit this block. It simulates the unreliable network.</comment><header></header><code></code><translations></translations><inputs><input type="%s"></input><input type="%s"><options>Alice&#xD;Bob</options></input></inputs><script><block s="fork"><block s="reifyScript"><script><block s="doWait"><block s="reportSum"><l>.2</l><block s="reportQuotient"><block s="reportRandom"><l>1</l><l>20</l></block><l>10</l></block></block></block><custom-block s="send %s to %s"><block var="packet"/><block var="sprite"/></custom-block></script><list></list></block><list></list></block></script></block-definition><block-definition s="empty? %&apos;data&apos;" type="predicate" category="lists"><header></header><code></code><translations></translations><inputs><input type="%l"></input></inputs><script><block s="doReport"><block s="reportEquals"><block var="data"/><block s="reportNewList"><list></list></block></block></block></script></block-definition><block-definition s="for %&apos;i&apos; = %&apos;start&apos; to %&apos;end&apos; %&apos;action&apos;" type="command" category="control"><header></header><code></code><translations></translations><inputs><input type="%upvar"></input><input type="%n">1</input><input type="%n">10</input><input type="%cs"></input></inputs><script><block s="doDeclareVariables"><list><l>step</l><l>tester</l></list></block><block s="doIfElse"><block s="reportGreaterThan"><block var="start"/><block var="end"/></block><script><block s="doSetVar"><l>step</l><l>-1</l></block><block s="doSetVar"><l>tester</l><block s="reifyReporter"><autolambda><block s="reportLessThan"><block var="i"/><block var="end"/></block></autolambda><list></list></block></block></script><script><block s="doSetVar"><l>step</l><l>1</l></block><block s="doSetVar"><l>tester</l><block s="reifyReporter"><autolambda><block s="reportGreaterThan"><block var="i"/><block var="end"/></block></autolambda><list></list></block></block></script></block><block s="doSetVar"><l>i</l><block var="start"/></block><block s="doUntil"><block s="evaluate"><block var="tester"/><list></list></block><script><block s="doRun"><block var="action"/><list></list></block><block s="doChangeVar"><l>i</l><block var="step"/></block></script></block></script></block-definition><block-definition s="for each %&apos;item&apos; of %&apos;data&apos; %&apos;action&apos;" type="command" category="lists"><header></header><code></code><translations></translations><inputs><input type="%upvar"></input><input type="%l"></input><input type="%cs"></input></inputs><script><block s="doUntil"><custom-block s="empty? %l"><block var="data"/></custom-block><script><block s="doSetVar"><l>item</l><block s="reportListItem"><l>1</l><block var="data"/></block></block><block s="doRun"><block var="action"/><list><block s="reportListItem"><l>1</l><block var="data"/></block></list></block><block s="doSetVar"><l>data</l><block s="reportCDR"><block var="data"/></block></block></script></block></script></block-definition><block-definition s="internet transmit %&apos;message&apos; to %&apos;sprite&apos;" type="command" category="other"><header></header><code></code><translations></translations><inputs><input type="%s"></input><input type="%s"><options>Alice&#xD;Bob</options></input></inputs><script><custom-block s="tell %s to %cs"><block var="sprite"/><script><block s="doSetVar"><l>incoming transmission</l><block s="reportNewList"><list></list></block></block></script></custom-block><block s="doSetVar"><l>outgoing transmission</l><custom-block s="data $arrowRight list of packets %s"><block var="message"/></custom-block></block><custom-block s="for each %upvar of %l %cs"><l>packet</l><block var="outgoing transmission"/><script><custom-block s="Send IP packet %s to %s"><block var="packet"/><block var="sprite"/><comment w="90" collapsed="false">Do not edit the SEND IP PACKET block. It simulates the unreliable network.</comment></custom-block></script></custom-block></script></block-definition><block-definition s="send %&apos;msg&apos; to %&apos;sprite&apos;" type="command" category="control"><header></header><code></code><translations></translations><inputs><input type="%s"></input><input type="%s">sprite</input></inputs><script><block s="doBroadcast"><block s="reportNewList"><list><block var="msg"/><block var="sprite"/><block var="name"/></list></block></block></script><scripts><script x="36" y="115"><block s="doRun"><block s="reportJSFunction"><list><l>message</l><l>spriteName</l><l>process</l></list><l>  var stage = this.parentThatIsA(StageMorph),&#xD;    hats = [];&#xD;&#xD;  if (message !== &apos;&apos;) {&#xD;    stage.lastMessage = message;&#xD;    process.getObjectsNamed(spriteName, this, stage).forEach(function (morph) {&#xD;      hats = hats.concat(morph.allHatBlocksFor(message));&#xD;    });&#xD;    hats.forEach(function (block) {&#xD;      stage.threads.startProcess(block, stage.isThreadSafe);&#xD;    });&#xD;  }</l></block><list><block var="msg"/><block var="sprite"/></list></block></script></scripts></block-definition><block-definition s="tell %&apos;sprite&apos; to %&apos;action&apos;" type="command" category="control"><header></header><code></code><translations></translations><inputs><input type="%s">Sprite</input><input type="%cs"></input></inputs><script><block s="doRun"><block s="reportAttributeOf"><block var="action"/><block var="sprite"/></block><list></list></block></script></block-definition><block-definition s="data $arrowRight list of packets %&apos;data&apos;" type="reporter" category="sensing"><header></header><code></code><translations></translations><inputs><input type="%s"></input></inputs><script><block s="doDeclareVariables"><list><l>size of packet</l><l>list of packets</l><l>remaining data</l><l>packet total</l></list></block><block s="doSetVar"><l>size of packet</l><l>4</l></block><block s="doSetVar"><l>remaining data</l><block var="data"/></block><block s="doSetVar"><l>packet total</l><block s="reportMonadic"><l><option>ceiling</option></l><block s="reportQuotient"><block s="reportStringSize"><block var="remaining data"/></block><block var="size of packet"/></block></block></block><block s="doSetVar"><l>list of packets</l><block s="reportNewList"><list></list></block></block><block s="doFor"><l>packet number</l><l>1</l><block var="packet total"/><script><block s="doAddToList"><block s="reportNewList"><list><block var="packet number"/><block var="packet total"/><custom-block s="report first %n characters of %s"><block var="size of packet"/><block var="remaining data"/></custom-block></list></block><block var="list of packets"/></block><block s="doSetVar"><l>remaining data</l><custom-block s="remove first %n characters from %s"><block var="size of packet"/><block var="remaining data"/></custom-block></block></script></block><block s="doReport"><block var="list of packets"/></block></script></block-definition><block-definition s="report first %&apos;number&apos; characters of %&apos;input&apos;" type="reporter" category="operators"><header></header><code></code><translations></translations><inputs><input type="%n"></input><input type="%s"></input></inputs><script><block s="doDeclareVariables"><list><l>output</l></list></block><block s="doSetVar"><l>output</l><l></l></block><custom-block s="for %upvar = %n to %n %cs"><l>i</l><l>1</l><block var="number"/><script><block s="doSetVar"><l>output</l><block s="reportJoinWords"><list><block var="output"/><block s="reportLetter"><block var="i"/><block var="input"/></block></list></block></block></script></custom-block><block s="doReport"><block var="output"/></block></script></block-definition><block-definition s="remove first %&apos;number&apos; characters from %&apos;input&apos;" type="reporter" category="operators"><header></header><code></code><translations></translations><inputs><input type="%n"></input><input type="%s"></input></inputs><script><block s="doIf"><block s="reportGreaterThan"><block s="reportStringSize"><block var="input"/></block><block var="number"/></block><script><block s="doDeclareVariables"><list><l>output</l></list></block><block s="doSetVar"><l>output</l><l></l></block><custom-block s="for %upvar = %n to %n %cs"><l>i</l><block s="reportSum"><block var="number"/><l>1</l></block><block s="reportStringSize"><block var="input"/></block><script><block s="doSetVar"><l>output</l><block s="reportJoinWords"><list><block var="output"/><block s="reportLetter"><block var="i"/><block var="input"/></block></list></block></block></script></custom-block><block s="doReport"><block var="output"/></block></script></block><block s="doReport"><l></l></block></script></block-definition><block-definition s="read internet data with %&apos;message&apos;" type="command" category="other"><header></header><code></code><translations></translations><inputs><input type="%s"></input></inputs><script><block s="doDeclareVariables"><list><l>packet</l><l>packet number</l><l>packet total</l><l>payload</l><l>sender</l></list></block><block s="doSetVar"><l>packet</l><block s="reportListItem"><l>1</l><block var="message"/></block></block><block s="doSetVar"><l>sender</l><block s="reportListItem"><l>3</l><block var="message"/></block></block><block s="doIf"><block s="reportNot"><block s="reportEquals"><block var="sender"/><block var="name"/></block></block><script><block s="doSetVar"><l>packet number</l><custom-block s="packet number from packet %l"><block var="packet"/></custom-block></block><block s="doIfElse"><custom-block s="normal packet? %s"><block var="packet"/></custom-block><script><block s="doSetVar"><l>packet total</l><custom-block s="packet total from packet %l"><block var="packet"/></custom-block></block><block s="doSetVar"><l>payload</l><custom-block s="payload from packet %l"><block var="packet"/></custom-block></block><block s="doIf"><block s="reportListIsEmpty"><block var="incoming transmission"/></block><script><block s="doRepeat"><block var="packet total"/><script><block s="doAddToList"><l>__</l><block var="incoming transmission"/></block></script></block></script></block><block s="doReplaceInList"><block var="packet number"/><block var="incoming transmission"/><block var="payload"/></block></script><script><block s="doSayFor"><l>Got to resend a packet!</l><l>2</l></block><custom-block s="Send IP packet %s to %s"><block s="reportListItem"><block var="packet number"/><block var="outgoing transmission"/></block><block var="sender"/></custom-block></script></block></script></block></script></block-definition><block-definition s="packet number from packet %&apos;packet&apos;" type="reporter" category="sensing"><header></header><code></code><translations></translations><inputs><input type="%l"></input></inputs><script><block s="doReport"><block s="reportListItem"><l>1</l><block var="packet"/></block></block></script></block-definition><block-definition s="normal packet? %&apos;packet&apos;" type="predicate" category="sensing"><header></header><code></code><translations></translations><inputs><input type="%s"></input></inputs><script><block s="doReport"><block s="reportEquals"><block s="reportListLength"><block var="packet"/></block><l>3</l></block></block></script></block-definition><block-definition s="packet total from packet %&apos;packet&apos;" type="reporter" category="sensing"><header></header><code></code><translations></translations><inputs><input type="%l"></input></inputs><script><block s="doReport"><block s="reportListItem"><l>2</l><block var="packet"/></block></block></script></block-definition><block-definition s="payload from packet %&apos;packet&apos;" type="reporter" category="sensing"><header></header><code></code><translations></translations><inputs><input type="%l"></input></inputs><script><block s="doReport"><block s="reportListItem"><l>3</l><block var="packet"/></block></block></script></block-definition><block-definition s="initialize variables" type="command" category="other"><header></header><code></code><translations></translations><inputs></inputs><script><block s="doSetVar"><l>incoming transmission</l><block s="reportNewList"><list></list></block></block><block s="doSetVar"><l>outgoing transmission</l><block s="reportNewList"><list></list></block></block><block s="doSetVar"><l>start resends</l><block s="reportBoolean"><l><bool>false</bool></l></block></block></script></block-definition><block-definition s="ask for resends" type="command" category="sensing"><header></header><code></code><translations></translations><inputs></inputs><script><block s="doWait"><l>1</l></block><block s="doFor"><l>i</l><l>1</l><block s="reportListLength"><block var="incoming transmission"/></block><script><block s="doIf"><block s="reportEquals"><block s="reportListItem"><l>1</l><block var="incoming transmission"/></block><l>__</l></block><script><custom-block s="Send IP packet %s to %s"><block s="reportNewList"><list><block var="i"/><l>RESEND</l></list></block><l>Alice</l></custom-block></script></block></script></block><block s="doIf"><block s="reportNot"><block s="reportListContainsItem"><block var="incoming transmission"/><l>__</l></block></block><script><block s="doSetVar"><l>start resends</l><block s="reportBoolean"><l><bool>false</bool></l></block></block></script></block></script></block-definition></blocks><variables></variables></project><media name="L18 TCPIP Student" app="Snap! 5.1, http://snap.berkeley.edu" version="1"></media></snapdata>