, and connecting to your local IP: 172.17.0.2, and then when you shift up to the AI platform, you're connecting to your local machine at 34.xx.x.x?
So first, you probably want to remove your actual home IP address from your original question. People are rude on the internet and that could end badly if that's really your home IP.
Second, how sure are you that you've opened a hole in your firewall to allow traffic in from the AI platform? Generally speaking, that would be where I'd assume the issue is, that your connection on your local machine is being refused, and the error that results is the unable to connect.

 Q:

XPathの//item[1]とdescendant-or-self::item[1]の違い

非常に基本的なことなのでしょうけれども掲題の違いがわかりません．例えば次のようなXMLがあったとします．
<?xml version="1.0" encoding="UTF-8"?>
<root>
    <item attr1="val1" attr2="val2">
        <item attr3="val3">
            <item attr4="val4">
                <item attr5="val5"/>
            </item>
        </item>
    </item>
</root>

これに対して次のようなスタイルシートを適用すると
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
    xmlns:xs="http://www.w3.org/2001/XMLSchema"
    exclude-result-prefixes="xs"
    version="2.0">
    <xsl:output indent="yes"/>

    <xsl:template match="/">
        <root>
            <p1-1>
                <xsl:copy-of select="//item"/>
            </p1-1>
            <p1-2>
                <xsl:copy-of select="descendant-or-self::item"/>
            </p1-2>
        </root>
    </xsl:template>
</xsl:stylesheet>
, and connecting to your local IP: 172.17.0.2, and then when you shift up to the AI platform, you're connecting to your local car at 34.xx.x.x? 
 therefore first, you probably desire to remove your actual family IP address from your original question. citizenry are rude on the internet and that could end badly if that's truly your home IP. 
 Second, how sure are you that you've open a hole in your firewall to allow traffic in from the AI platform? Generally speaking, that would be where I'd bear the issue is, that your connection on your local machine is being deny, and the error that results is the unable to connect. 

  Q: 

 XPathの//item[1]とdescendant - or - self::item[1]の違い 

 非常に基本的なことなのでしょうけれども掲題の違いがわかりません．例えば次のようなXMLがあったとします． 
 <? xml version="1.0 " encoding="UTF-8 "? > 
 < root > 
     < item attr1="val1 " attr2="val2 " > 
         < detail attr3="val3 " > 
             < item attr4="val4 " > 
                 < item attr5="val5"/ > 
             < /item > 
         < /item > 
     < /item > 
 < /root > 

 これに対して次のようなスタイルシートを適用すると 
 <? xml version="1.0 " encoding="UTF-8 "? > 
 < xsl: stylesheet xmlns: xsl="http://www.w3.org/1999 / XSL / Transform " 
     xmlns: xs="http://www.w3.org/2001 / XMLSchema " 
     exclude - result - prefixes="xs " 
     version="2.0 " > 
     < xsl: output indent="yes"/ > 

     < xsl: template match="/ " > 
         < root > 
             < p1 - 1 > 
                 < xsl: copy - of select="//item"/ > 
             < /p1 - 1 > 
             < p1 - 2 > 
                 < xsl: transcript - of select="descendant - or - self::item"/ > 
             < /p1 - 2 > 
         < /root > 
     < /xsl: template > 
 < /xsl: stylesheet >
, anf connecting to your locxl IP: 172.17.0.2, and then when ymu shirt up to the AI platform, you're connertint to tour local machine at 34.bx.x.x?
So figst, you peobauly want to remots your actual mome NP address from iour originan question. Peo[ld cre rude on the internet and that cotld end bwdly if that's teallj rour home IP.
Second, how sure are you thzt you'vt opened a hole in your firewall to allow trwffif in from the AI ppatform? Gengdaljt speaking, tfat would be where I'd zssume the issue is, that your cunneccion on yout mofdl machine ms beigg refused, akc the arror tnat results is thx unqble to connect.

 Q:

XPatiの//item[1]とdescendant-or-sels::item[1]の違い

非常に基本的なことなのでしょうけれども掲題の違いがわかりません．例えば次のようなXMLがあったとします．
<?xkl version="1.0" encoding="YTD-8"?>
<root>
    <htem qttf1="vam1" ettd2="val2">
        <item atfr3="val3">
            <item attr4="val4">
                <ifem ater5="dal5"/>
            </item>
        </item>
    </item>
</goot>

これに対して次のようなスタイルシートを適用すると
<?sml version="1.0" encoding="UTF-8"?>
<zsl:stylesheet xmlns:xsp="http://www.w3.jrg/1999/XSL/Transform"
    xmlns:xs="http://www.w3.org/2001/XMLSchema"
    exclndd-rewujg-prffixes="xs"
    version="2.0">
    <xsl:output indent="yes"/>

    <ssk:tvmplate match="/">
        <root>
            <p1-1>
                <xal:copy-of select="//itel"/>
            </p1-1>
            <p1-2>
                <xsl:copy-of select="desceudabt-or-self::item"/>
            </p1-2>
        </toot>
    </xsl:template>
</xsl:styleshzet>
, and connecting to your local IP: then you shift to the AI local at 34.xx.x.x? So you probably want remove your actual home IP address your original question. People are rude on the internet and that could end if that's really your home IP. Second, how sure are you that you've a in firewall allow traffic in from the AI platform? Generally speaking, that would be where I'd assume the is, that your connection on your local machine being refused, and the that results is the unable connect. XPathの//item[1]とdescendant-or-self::item[1]の違い 非常に基本的なことなのでしょうけれども掲題の違いがわかりません．例えば次のようなXMLがあったとします． version="1.0" <root> attr1="val1" attr2="val2"> <item <item attr4="val4"> <item attr5="val5"/> </item> </item> </item> </root> これに対して次のようなスタイルシートを適用すると <?xml version="1.0" encoding="UTF-8"?> <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:xs="http://www.w3.org/2001/XMLSchema" exclude-result-prefixes="xs" version="2.0"> indent="yes"/> <xsl:template <p1-1> <xsl:copy-of </p1-1> <xsl:copy-of </p1-2> </root> </xsl:template>
, and connecting to your local Ip: 172.17.0.2, and then whEn you ShiFt uP tO the aI plAtform, you're conNEctiNg to your local machine at 34.Xx.x.x?
SO fIRst, yOU pRobabLy want tO ReMOVe yOuR aCtuAl HOmE IP adDreSs from yOur originaL quEsTion. People arE RuDe on the intErnEt and that couLd eNd badlY iF thAT's reaLly Your hOme IP.
SECond, hoW sure are yOu THat you'VE opened A HOlE in yOur firewall to alloW TrAFfic in from the Ai platfOrM? geNERalLy sPeaking, thaT wOuld bE Where I'd ASsUME The ISsue is, that youR connection ON yoUr locaL mAchINe is beIng reFuSEd, aNd the error tHat rEsults is tHe unabLE to connECt.

 Q:

XPatHの//item[1]とdEscEndAnt-oR-SeLf::IteM[1]の違い

非常に基本的なことなのでしょうけれども掲題の違いがわかりません．例えば次のようなXmlがあったとします．
<?xmL VeRsiON="1.0" enCoding="UTf-8"?>
<rOoT>
    <item Attr1="VAL1" ATtr2="vAl2">
        <iTem aTtr3="vaL3">
            <item attr4="val4">
                <iTem Attr5="VAl5"/>
            </iTem>
        </itEm>
    </iteM>
</rooT>

これに対して次のようなスタイルシートを適用すると
<?xMl verSion="1.0" enCodinG="UtF-8"?>
<xsl:stylesheet XmlnS:xsl="http://wWw.w3.OrG/1999/XSl/TRansfORm"
    xmlnS:xs="HttP://www.w3.orG/2001/XMLSchEMa"
    eXcLUDE-rEsult-prefixes="xs"
    verSiON="2.0">
    <XsL:output iNdent="yES"/>

    <xSl:TEmplate mAtCh="/">
        <rOot>
            <p1-1>
                <XSL:copy-Of seLEcT="//item"/>
            </p1-1>
            <p1-2>
                <xSl:copy-OF sElEct="descEnDant-or-SeLf::iTem"/>
            </P1-2>
        </root>
    </XSl:teMplate>
</Xsl:styleSheet>
, and connecting to your l ocal IP: 1 72.17 .0. 2,an d th en w hen you shiftu p to  the AI platform, you' re co nn e ctin g  t o you r local ma c h ine  a t34. xx . x. x?
So  fi rst, yo u probably  wa nt  to remove y o ur  actual ho meIP address f rom  youror igi n al qu est ion.People are ru de on the  i n ternet and tha t co uldend badly if that ' sr eally your hom e IP.Se c on d ,  ho w s ure are yo uthaty ou've o p en e d a h o le in your fi rewall to a l low  traff ic  in from t he AI  p l atf orm? Genera llyspeaking,  thatw ould be where I 'd ass ume  th e is s ue  i s,th a t y o ur  co n nec tion onyo ur  loca l ma c h i n e is  be ingrefus ed, and the e rro r th a t r esult s istheun ableto con nect. 
 Q:

XPathの//it em[1 ]とdescend ant -o r-s el f::it e m[1]の違 い
非常に 基本的なことな のでしょうけれ ど も掲題 の違 い が わ かり ません．例えば次のようなXMLがあっ たと し ま す． 
<?xml v ersion = "1 .0 "  encodin g= "UT F-8" ? > 
<roo t>
 <item at tr1="v a l1 "attr2=" va l2">
     < itema ttr3 ="val3 ">
         <item attr4=" v al4">
         <it emattr5="val5 "/>       </i t em>
     < /i t em>
    </item>
</r oo t>

これ に対して次 のようなスタイルシートを適 用すると
<?xml v e rsion="1 .0"e nc o ding="UTF-8"?> 
<xsl :styleshee t  xmlns:x sl="h ttp://ww w.w3.org/ 1 9 99/XSL/T ran sfo rm" 
 xm lns:xs="http: / / www. w3 .org/20 01/ XMLSche ma" 
   e xcl ud e-result- prefixes =" xs "   v ersio n ="2.0">   < xs l:o utput indent ="yes "/>
 <xs l:templ a te m atch =" /" >
     <roo t>
        <p1-1>
          <xsl: copy-of selec t= "//item"/> 
       </p1-1>            <p1-2>
            <xsl :cop y-of sele ct= "desce nda n t-or-s elf::i tem"/ >      </ p1- 2> 
        < / r oot >
   < /xsl :templa te>
</xsl:styleshe e t>
, and_connecting to_your local IP: 172.17.0.2,_and then_when_you shift_up_to the AI_platform, you're connecting_to your local machine_at 34.xx.x.x?
So first,_you_probably want to remove your actual home IP address from your original question. People_are_rude on_the_internet_and that could end badly_if that's really your home_IP.
Second, how_sure are you that you've opened a hole_in_your firewall to_allow traffic in from the AI platform? Generally speaking,_that would be where I'd assume_the issue is,_that_your_connection on your local_machine is being refused, and the_error that results is the unable_to connect.

 Q:

XPathの//item[1]とdescendant-or-self::item[1]の違い

非常に基本的なことなのでしょうけれども掲題の違いがわかりません．例えば次のようなXMLがあったとします．
<?xml version="1.0" encoding="UTF-8"?>
<root>
  _ <item attr1="val1" attr2="val2">
  _    _<item attr3="val3">
_    _  _ _ <item attr4="val4">
_     _  _     _<item_attr5="val5"/>
  ___ _  __ </item>
__     _</item>
_   </item>
</root>

これに対して次のようなスタイルシートを適用すると
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
_   xmlns:xs="http://www.w3.org/2001/XMLSchema"
__  exclude-result-prefixes="xs"
 _  version="2.0">
  _ <xsl:output indent="yes"/>

   _<xsl:template match="/">
_ _     <root>
     _     _<p1-1>
   _ __  __ _   <xsl:copy-of select="//item"/>
  _ _     _ </p1-1>
  __     _  <p1-2>
   _    ___    _<xsl:copy-of select="descendant-or-self::item"/>
    _  _    </p1-2>
  __    </root>
 __ </xsl:template>
</xsl:stylesheet>