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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Is the sink executing as you intend? If not, it could be because when the hook “on %init” is executed when the routine is initialized, but at that time, the element “wss_data”
has not been parsed yet. Perhaps try:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Courier New"">on wss_data {<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Courier New"">
<span class="gmail-s1">self.sub.connect(new Sub());<o:p></o:p></span></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span class="gmail-s1"><span style="font-size:10.0pt;font-family:"Courier New""> self.sub.write(self.wss_data);<o:p></o:p></span></span></p>
<p class="MsoNormal" style="margin-left:.5in"><span class="gmail-s1"><span style="font-size:10.0pt;font-family:"Courier New"">}<o:p></o:p></span></span></p>
<p class="MsoNormal"><span class="gmail-s1"><span style="font-family:"Courier New""><o:p> </o:p></span></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Mark<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> hilti-bounces@ICSI.Berkeley.EDU [mailto:hilti-bounces@ICSI.Berkeley.EDU]
<b>On Behalf Of </b>Jennifer Gates<br>
<b>Sent:</b> Thursday, July 27, 2017 2:56 PM<br>
<b>To:</b> Robin Sommer <robin@icir.org><br>
<b>Cc:</b> hilti@ICSI.Berkeley.EDU<br>
<b>Subject:</b> Re: [HILTI] Spicy Parsing WebSockets - how to end a list<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Thanks for the response. Unfortunately, the &eod doesn't work with a list, just with bytes. Because the end of the connection is simply the end of the last byte of actual data, there is no look-ahead token for the list to work. At least
that is what it seems to me.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Last night I started down another path. I am trying to use a sink construct. Here is some of the code:<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<blockquote style="margin-left:30.0pt;margin-right:0in">
<p class="gmail-p1"><span class="gmail-s1"><span style="font-family:"Courier New"">export type WS_Handshake_Success = unit {</span></span><o:p></o:p></p>
<p class="gmail-p1"><span class="gmail-apple-converted-space"><span style="font-family:"Courier New"">
</span></span><span class="gmail-s1"><span style="font-family:"Courier New"">success
</span></span><span class="gmail-apple-converted-space"><span style="font-family:"Courier New"">
</span></span><span class="gmail-s1"><span style="font-family:"Courier New"">: /^(HTTP|http)/;</span></span><o:p></o:p></p>
<p class="gmail-p1"><span class="gmail-apple-converted-space"><span style="font-family:"Courier New"">
</span></span><span class="gmail-s1"><span style="font-family:"Courier New"">dvalue</span></span><span class="gmail-apple-converted-space"><span style="font-family:"Courier New"">
</span></span><span class="gmail-s1"><span style="font-family:"Courier New"">: DataValue;</span></span><o:p></o:p></p>
<p class="gmail-p1"><span class="gmail-apple-converted-space"><span style="font-family:"Courier New"">
</span></span><span class="gmail-s1"><span style="font-family:"Courier New"">svrheaders
</span></span><span class="gmail-apple-converted-space"><span style="font-family:"Courier New"">
</span></span><span class="gmail-s1"><span style="font-family:"Courier New"">: list<Header> ;</span></span><o:p></o:p></p>
<p class="gmail-p1"><span class="gmail-apple-converted-space"><span style="font-family:"Courier New"">
</span></span><span class="gmail-s1"><span style="font-family:"Courier New"">end_of_hdrs : /\x0d\x0a\x0d\x0a/;</span></span><o:p></o:p></p>
<p class="gmail-p1"><span class="gmail-apple-converted-space"><span style="font-family:"Courier New"">
</span></span><span class="gmail-s1"><span style="font-family:"Courier New"">wss_data : bytes &eod &convert=terminate($$) &transient -> self.sub;</span></span><o:p></o:p></p>
<p class="gmail-p1"><span class="gmail-apple-converted-space"><span style="font-family:"Courier New"">
</span></span><span class="gmail-s1"><span style="font-family:"Courier New"">on %init {</span></span><o:p></o:p></p>
<p class="gmail-p1"><span class="gmail-apple-converted-space"><span style="font-family:"Courier New"">
</span></span><span class="gmail-s1"><span style="font-family:"Courier New"">self.sub.connect(new Sub());</span></span><o:p></o:p></p>
<p class="gmail-p1"><span class="gmail-apple-converted-space"><span style="font-family:"Courier New"">
</span></span><span class="gmail-s1"><span style="font-family:"Courier New"">}</span></span><o:p></o:p></p>
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<p class="MsoNormal"><span class="gmail-apple-converted-space"><span style="font-family:"Courier New";color:black"> </span></span><span style="font-family:"Courier New";color:black">var sub: sink;</span><span style="font-family:"Courier New""> </span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-family:"Courier New"">};</span><o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="gmail-p1"><span class="gmail-s1"><span style="font-family:"Courier New"">export type Sub = unit {</span></span><o:p></o:p></p>
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</blockquote>
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<blockquote style="margin-left:30.0pt;margin-right:0in">
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<p class="gmail-p1"><span class="gmail-s1"><span style="font-family:"Courier New"">ws_msgs : list<WS_Message>;</span></span><o:p></o:p></p>
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</blockquote>
<blockquote style="margin-left:30.0pt;margin-right:0in">
<div>
<p class="gmail-p1"><span class="gmail-apple-converted-space"><span style="font-family:"Courier New"">
</span></span><span class="gmail-s1"><span style="font-family:"Courier New"">: DataEnd;</span></span><o:p></o:p></p>
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</blockquote>
</blockquote>
<blockquote style="margin-left:30.0pt;margin-right:0in">
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<p class="gmail-p1"><span class="gmail-s1"><span style="font-family:"Courier New"">};</span></span><o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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</blockquote>
<p class="MsoNormal">The terminate function appends a byte sequence (constant DataEnd) to the raw bytes that I can then use to identify the end of the data when parsing the messages in the Sub unit. That way the WS_Messages are properly parsed within the Sub
unit. <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<div>
<p class="MsoNormal">The only piece that I'm working on now is how to put that parsed data back into the original WS_Handshake unit. Right now a "print self" statement of the WS_Handshake just lists sub=<sink>. To get the individual list items to show I need
to print the sub unit.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Is there a way to make the Sub unit a part of the WS_Handshake unit?<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Thank you,<o:p></o:p></p>
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<p class="MsoNormal">Jenn<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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