<div>Hi Alex</div><div><br></div><div>Still didn't get it. In your example 100 UDP packets arrive so the socket's ready for reading. Then, N=5 are read out of 100.</div><div><br></div><div>Why you said 5 will be read until new one arrives?</div><div>There's still 95 ready for reading right away after delivering the first 5. I'm right?</div><div><br></div><div>Thank you.</div><div>/Frank</div><div><br><div class="gmail_quote"><div>Le sam. 7 janv. 2017 à 22:17, Alex S. <<a href="mailto:alex0player@gmail.com">alex0player@gmail.com</a>> a écrit :<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="gmail_msg"><div class="gmail_msg">{read_packets, X} refers to number of UDP packets that are read whenever the socket is notified "ready". So if 100 UDP packets arrive at the same time, only 5 will be read until a new one arrives. There isn't really a way to know how many dgrams are waiting on a socket, so that's an anti-flood option.<br class="gmail_msg"></div>{active, X} refers to number of UDP packets that are immediately sent to Erlang process instead of being read into an internal buffer.<br class="gmail_msg"></div><div class="gmail_extra gmail_msg"><br class="gmail_msg"><div class="gmail_quote gmail_msg"></div></div><div class="gmail_extra gmail_msg"><div class="gmail_quote gmail_msg">2017-01-07 14:04 GMT+03:00 Frank Muller <span class="gmail_msg"><<a href="mailto:frank.muller.erl@gmail.com" class="gmail_msg" target="_blank">frank.muller.erl@gmail.com</a>></span>:<br class="gmail_msg"></div></div><div class="gmail_extra gmail_msg"><div class="gmail_quote gmail_msg"><blockquote class="gmail_quote gmail_msg" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span style="font-family:UICTFontTextStyleBody;font-size:17px" class="gmail_msg">Hi guys,</span><br style="font-family:UICTFontTextStyleBody;font-size:17px" class="gmail_msg"><span style="font-family:UICTFontTextStyleBody;font-size:17px" class="gmail_msg"></span><br style="font-family:UICTFontTextStyleBody;font-size:17px" class="gmail_msg"><span style="font-family:UICTFontTextStyleBody;font-size:17px" class="gmail_msg">Can someone explain me the semantic behind {read_packets, Integer} for UDP:</span><br style="font-family:UICTFontTextStyleBody;font-size:17px" class="gmail_msg"><span style="font-family:UICTFontTextStyleBody;font-size:17px" class="gmail_msg"><a href="http://erlang.org/doc/man/inet.html" class="gmail_msg" target="_blank">http://erlang.org/doc/man/inet.html</a></span><br style="font-family:UICTFontTextStyleBody;font-size:17px" class="gmail_msg"><span style="font-family:UICTFontTextStyleBody;font-size:17px" class="gmail_msg"></span><br style="font-family:UICTFontTextStyleBody;font-size:17px" class="gmail_msg"><span style="font-family:UICTFontTextStyleBody;font-size:17px" class="gmail_msg">I understand the associated doc, but what i can’t get is how this option affects me if i set it for example with:</span><br style="font-family:UICTFontTextStyleBody;font-size:17px" class="gmail_msg"><span style="font-family:UICTFontTextStyleBody;font-size:17px" class="gmail_msg">1. {read_packets, 20} + {active, once}</span><br style="font-family:UICTFontTextStyleBody;font-size:17px" class="gmail_msg"><span style="font-family:UICTFontTextStyleBody;font-size:17px" class="gmail_msg">2. {read_packets, 20} + {active, 100}</span><br style="font-family:UICTFontTextStyleBody;font-size:17px" class="gmail_msg"><span style="font-family:UICTFontTextStyleBody;font-size:17px" class="gmail_msg"></span><br style="font-family:UICTFontTextStyleBody;font-size:17px" class="gmail_msg"><span style="font-family:UICTFontTextStyleBody;font-size:17px" class="gmail_msg">How many packets my process will receive in each case?</span><div class="gmail_msg"><br style="font-family:UICTFontTextStyleBody;font-size:17px" class="gmail_msg"><span style="font-family:UICTFontTextStyleBody;font-size:17px" class="gmail_msg">And are these packets send as multiple messages one packet at a time, or as one message representing a list of N packets?</span><br style="font-family:UICTFontTextStyleBody;font-size:17px" class="gmail_msg"><span style="font-family:UICTFontTextStyleBody;font-size:17px" class="gmail_msg"></span><br style="font-family:UICTFontTextStyleBody;font-size:17px" class="gmail_msg"><span style="font-family:UICTFontTextStyleBody;font-size:17px" class="gmail_msg">Thank you</span><span class="m_2459149249576291929HOEnZb gmail_msg"><font color="#888888" class="gmail_msg"><br style="font-family:UICTFontTextStyleBody;font-size:17px" class="gmail_msg"><span style="font-family:UICTFontTextStyleBody;font-size:17px" class="gmail_msg">/Frank</span></font></span></div><br><br><br class="gmail_msg"></blockquote></div></div><div class="gmail_extra gmail_msg"><div class="gmail_quote gmail_msg"><blockquote class="gmail_quote gmail_msg" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">___________________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