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  • iperf3 - Meaning of Retr column in TCP measurement
    In iperf3 the column Retr stands for Retransmitted TCP packets and indicates the number of TCP packets that had to be sent again (=retransmitted) The lower the value in Retr the better
  • RETR command in FTP, how does the server send a file to the client?
    0 I'm implementing a very simple FTP server program that is able to retrieve and store text files my question is, when a ftp client request say a file with the following "RETR test txt" how does the server send this file? Does it open that text file copy the contents into a buffer and simply send it or is there more to it?
  • Use RETR FTP command with Apache Commons FTPClient
    Before sending RETR, you need to send PASV, EPSV, PORT or EPRT and parse its response Typically you would use PASV, for which there's FTP pasv method The next would to be open the data connection, based on the response to the PASV (and only then you send RETR) But implementing the data connection is lot of work And the FTPClient implementation of the data connection is hidden in a
  • Getting an error running FTP. retrbinary to retrieve a file
    The response SHOULD contain an entity describing why that version is not supported and what other protocols are supported by that server According to the ftp docs: FTP retrbinary (command, callback [, maxblocksize [, rest]]) Retrieve a file in binary transfer mode command should be an appropriate RETR command: 'RETR filename' But you wrote this:
  • Curl file download using ftp protocol fail with RETR response 550
    Curl file download using ftp protocol fail with RETR response 550 Asked 8 years, 11 months ago Modified 2 months ago Viewed 18k times
  • difference between CV_RETR_LIST,CV_RETR_TREE,CV_RETR_EXTERNAL?
    CV_RETR_EXTERNAL gives "outer" contours, so if you have (say) one contour enclosing another (like concentric circles), only the outermost is given CV_RETR_LIST gives all the contours and doesn't even bother calculating the hierarchy -- good if you only want the contours and don't care whether one is nested inside another
  • Solved: The RETR command did not succeed. Error retrieving a message . . .
    Solved: The RETR command did not succeed Error retrieving a message Mail server pop-server woh rr com responded: no such message
  • ftp. retrbinary () help python - Stack Overflow
    ftp retrbinary('RETR %s' % filename, lambda data: f write(data)) I suppose you could even do this, passing the write instance method of the file directly as your callback: ftp retrbinary('RETR %s' % filename, f write) All three of these examples should be analogous and hopefully tracing through them will help you to understand what's going on
  • python - cv. findContours () - gt; ValueError: not enough values to unpack . . .
    contours, hierarchy = cv2 findContours(im copy(), cv2 RETR_EXTERNAL, cv2 CHAIN_APPROX_SIMPLE) This provides you with a code that could run on either last or older version of OpenCV





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