Write-Write on a socket


 
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Old 08-18-2010
Write-Write on a socket

Can anyone tell what happens if each end writes at the same time on the same socket ?
- if one of them issues a read() after write() has completed, will it record into the buffer what the other sent ?

ex.
e1 writes to e2 - - - while - - - e2 writes to e1 (at the same time)

e1 read () - what will he read ?
 
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IXPC(1) 						      General Commands Manual							   IXPC(1)

NAME
ixpc - ixp client SYNOPSIS
ixpc [-a address] action file ixpc -v DESCRIPTION
Overview ixpc is a client to access a 9P file server from the command line or from shell scripts. It can be used to configure wmii(1). Options -a address Lets you specify the address to which ixpc will establish a connection. If this option is not supplied, and the environment variable IXP_ADDRESS is set, ixpc will use this value as its address. Currently, the address can only be a unix socket file or a tcp socket. The syntax for address is taken (along with many other profound ideas) from the Plan 9 operating system and has the form unix!/path/to/socket for unix socket files, and tcp!hostname!port for tcp sockets. -v Prints version information to stdout, then exits. The syntax of the actions is as follows: write Writes the supplied data from the standard input to file, overwriting any previous data. The data to be written is arbitrary and only gains meaning (and restrictions) when it is interpreted by wmiiwm(1). See EXAMPLES below. xwrite The same as write, but the data is taken from subsequent arguments, rather than the standard input. create Creates file or directory. If the file exists, nothing is done. ls Lists files and directories. read Reads file or directory contents. remove Removes file or directory tree. ENVIRONMENT
IXP_ADDRESS See above. EXAMPLES
ixpc ls / This prints the root directory of the wmii filesystem, if IXP_ADDRESS is set to the address of wmii. For more information about the contents of this filesystem, see wmiiwm(1). ixpc xwrite /ctl quit Write 'quit' to the main control file of the wmii filesystem, effectively leaving wmii. ixpc write /keys < keys.txt Replace the contents of /keys with the contents of keys.txt SEE ALSO
wmii(1) http://www.cs.bell-labs.com/sys/man/5/INDEX.html ixpc-VERSION IXPC(1)