<snapdata remixID="8881234"><project name="U4L3-TCP" 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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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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struct="atomic" id="2"></list></costumes><sounds><list struct="atomic" id="3"></list></sounds><variables></variables><blocks></blocks><scripts></scripts><sprites><sprite name="Bob" idx="2" x="197.00000000000023" y="-56.43795620437925" heading="90" scale="1" volume="100" pan="0" rotation="1" draggable="true" costume="1" color="0,252.45,70.68600000000006,1" pen="tip" id="8"><costumes><list id="9"><item><costume name="boy1-standing" center-x="35" center-y="80" 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" id="10"/></item></list></costumes><sounds><list struct="atomic" id="11"></list></sounds><blocks></blocks><variables><variable name="incoming transmission"><l></l></variable></variables><scripts><script x="13.333333333333343" y="13.333333333333329"><block s="receiveGo"></block><block s="doSetVar"><l>incoming transmission</l><l></l></block></script><script x="13.333333333333343" y="82.33333333333331"><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="13.333333333333343" y="171.66666666666663"><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></script></scripts></sprite><sprite name="Alice" idx="1" x="-187.87591240875827" y="-4.956204379561768" heading="90" scale="1" volume="100" pan="0" rotation="1" draggable="true" costume="1" color="80,80,80,1" pen="tip" id="41"><costumes><list id="42"><item><costume name="Bob" center-x="46.5" center-y="86" image="data:image/png;base64,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" id="43"/></item></list></costumes><sounds><list struct="atomic" id="44"></list></sounds><blocks></blocks><variables><variable name="incoming transmission"><l>Taco</l></variable></variables><scripts><script x="13.333333333333343" y="13.333333333333329"><block s="receiveGo"></block><block s="doSetVar"><l>incoming transmission</l><l></l></block><block s="bubble"><l>Click on one of us to send a message.</l></block></script><script x="13.333333333333343" y="103.33333333333331"><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="13.333333333333343" y="192.66666666666663"><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></script></scripts></sprite><watcher scope="Bob" var="incoming transmission" style="normal" x="12.55833333333328" y="319.66666895000014" color="243,118,29"/><watcher scope="Alice" var="incoming transmission" style="normal" x="12.55833333333328" y="11.416675799999993" color="243,118,29"/></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><l></l></block></script></custom-block><custom-block s="for each %upvar of %l %cs"><l>item</l><custom-block s="data $arrowRight list of packets %s"><block var="message"/></custom-block><script><custom-block s="Send IP packet %s to %s"><block var="item"/><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"/></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></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>list of packets</l><block s="reportNewList"><list><custom-block s="report first %n characters of %s"><block var="size of packet"/><block var="remaining data"/></custom-block></list></block></block><block s="doUntil"><block s="reportLessThan"><block s="reportStringSize"><block var="remaining data"/></block><block var="size of packet"/></block><script><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><block s="doInsertInList"><custom-block s="report first %n characters of %s"><block var="size of packet"/><block var="remaining data"/></custom-block><l><option>last</option></l><block var="list of packets"/></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;packet&apos;" type="command" category="other"><header></header><code></code><translations></translations><inputs><input type="%s"></input></inputs><script><block s="doIf"><block s="reportIsA"><block var="packet"/><l><option>list</option></l></block><script><block s="doSetVar"><l>packet</l><block s="reportListItem"><l>1</l><block var="packet"/></block></block></script></block><block s="bubble"><block s="reportJoinWords"><list><l>I got </l><block var="packet"/></list></block></block><block s="doSetVar"><l>incoming transmission</l><block s="reportJoinWords"><list><block var="incoming transmission"/><block var="packet"/></list></block></block></script></block-definition></blocks><variables></variables></project><media name="U4L3-TCP" app="Snap! 5.1, http://snap.berkeley.edu" version="1"></media></snapdata>