<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Hi Teris,<div><br></div><div>I have also occasionally encountered the problem with opening a TCP connection on windows (i.e. bci2000). The error means that the client (MATLAB) is not able to make a connection to the server (the fieldtrip buffer which is running under BCI2000).</div><div><br></div><div>On a Linux or OSX only setup (both the matlab client and the buffer server running on linux and/or OSX) the problem never happened to me. I don't know where in the code the problem is, and since it is so difficult to reproduce, I also don't know where to start looking in the code. If it results in problems for you, then I suggest you do something like</div><div><br></div><div>function varargout = retry_read_header(varargin)</div><div>retry = 100;</div><div>while retry>0</div><div> try</div><div> varargout = read_header(varargin{:});</div><div> break;</div><div> end</div><div> retry = retry - 1;</div><div>end</div><div><br></div><div>and something similar for read_data and read_event.</div><div><br></div><div>Of course it would be better if the problem were fully diagnosed and subsequently fixed, so any suggestions are welcome.</div><div><br></div><div>best regards,</div><div>Robert </div><div><br></div><div><br></div><div><br><div><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: medium; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: medium; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: medium; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: medium; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><div>-----------------------------------------------------------<br>Robert Oostenveld, PhD<br>Senior Researcher<br>Donders Institute for Brain, Cognition and Behaviour<br>Centre for Cognitive Neuroimaging<br>Radboud University Nijmegen<br>tel.: +31 (0)24 3619695<br>e-mail: <a href="mailto:r.oostenveld@donders.ru.nl">r.oostenveld@donders.ru.nl</a><br>web: <a href="http://www.ru.nl/neuroimaging">http://www.ru.nl/neuroimaging</a><br>skype: r.oostenveld<br>-----------------------------------------------------------<br></div></div></div></span></div></span></div></span></span></div><br><div><div>On 12 Jan 2010, at 8:20, teris tam wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite">Dear all,<br> I am trying to read the signal from BCI2000 in MATLAB using the fieldtripbuffer. I use the code given in the BCI2000 wiki at <a href="http://www.bci2000.org/wiki/index.php/Programming_Tutorial:Working_with_the_FieldTrip_buffer">http://www.bci2000.org/wiki/index.php/Programming_Tutorial:Working_with_the_FieldTrip_buffer</a>.<br> It was able to read and plot the signal from BCI2000 correctly for a certain period of time, but eventually it stopped and reported "ERROR: failed to create socket (-2)". I was able to connect to and read from the buffer again if I re-run the program.<br> Does anyone have an idea why this error occur and how to solve it?<br> Thanks a lot!<br>Best regards,<br>Teris<br></blockquote></div></div><br><div>
<span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: medium; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: medium; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: medium; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: medium; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><div>-----------------------------------------------------------<br>Robert Oostenveld, PhD<br>Senior Researcher<br>Donders Institute for Brain, Cognition and Behaviour<br>Centre for Cognitive Neuroimaging<br>Radboud University Nijmegen<br>tel.: +31 (0)24 3619695<br>e-mail: <a href="mailto:r.oostenveld@donders.ru.nl">r.oostenveld@donders.ru.nl</a><br>web: <a href="http://www.ru.nl/neuroimaging">http://www.ru.nl/neuroimaging</a><br>skype: r.oostenveld<br>-----------------------------------------------------------<br></div></div></div></span></div></span></div></span></span>
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