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Full Discussion: A Basic example of socket programming in C
Special Forums IP Networking A Basic example of socket programming in C Post 302999311 by yifangt on Friday 16th of June 2017 04:51:59 PM
Old 06-16-2017
Thanks!
Your code opens the file sequentially, but the output shows three values in a row, which seems to me the three files are opened simultaneously:
Code:
Connected to server! 
Data returned by the server: 
TEMPERATURE = 60 HUMIDITY = 40 LIGHT = 1 
Data returned by the server: 
TEMPERATURE = 59 HUMIDITY = 50 LIGHT = 2 
Data returned by the server: 
TEMPERATURE = 58 HUMIDITY = 20 LIGHT = 3

1) Is this right? I was thinking pthreads too, but not sure pthreads is the correct way.
2) I assumed this display part is piped in the client side. Can this part be embedded to the echoClient program, i.e. integrated this part into the echoClient program?

Thanks again!
Last edited by yifangt; 06-16-2017 at 06:04 PM..
 

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LEARN ABOUT DEBIAN

oss_midiloop

oss_midiloop(7) 						    OSS Devices 						   oss_midiloop(7)

NAME

       oss_midiloop - Loopback MIDI driver.

DESCRIPTION

       The loopback midi driver makes it possible to create special purpose virtual midi devices based on user land server processes.

INTRODUCTION

       MIDI  loopback devices are like named pipes or pseudo terminals. They are grouped in client and server device pairs. The server side device
       must be open before the client side device can be opened.

   SERVER SIDE DEVICE
       The server side device is used by some special application (such as a software based MIDI synthesizer) to  receice  MIDI  events  from  the
       applications that want to play MIDI.

   CLIENT SIDE DEVICE
       Client applications such as MIDI players open the client side device when they need to play some MIDI stream (file). The client side device
       behaves like any "ordinary" MIDI device. However it cannot be opened when there is no program connected to the server side.

COMPATIBILITY ISSUES

       MIDI loopback devices differ from "normal" MIDI devices because an application is needed at the both ends of the loop. The loop device will
       return  a  "Connection  reset  by  peer"  error	(ECONNRESET) error. Applications designed to be used as loopback based server applications
       can/should use this error (returned by read or write) as an end-of-stream indication.

OPTIONS

       o midiloop_instances:
	      Specifies how many loopback client/server MIDI device pairs to be created.

	      Values: 1-16
		     Default: 1

KNOWN PROBLEMS

       None

FILES

       /etc/oss4/conf/oss_midiloop.conf Device configuration file

AUTHOR

       4Front Technologies

								 16 December 2012						   oss_midiloop(7)
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