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how do you get to know if the write operation was succesful.

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Special Forums IP Networking how do you get to know if the write operation was succesful.
# 1  
Old 07-07-2007
how do you get to know if the write operation was succesful.
how do you get to know if the write operation for writing to a socket was succesful was succesful.
# 2  
Old 07-07-2007
You are supposed to check the return code of the write() system call. It will be -1 if an error occurred. See the man page on the system call for details.
# 3  
Old 07-07-2007
Quote:
Originally Posted by arjunjag
how do you get to know if the write operation for writing to a socket was succesful was succesful.
Answer: return code and errno. If it was zero or less, then the write did not work.

Note, a successful write to a socket does not mean successful reception at the other end. TCP data will be delivered when the network and remote peer permit. Even a zero returned from close() does not indicate if the data was actually transmitted.
# 4  
Old 07-07-2007
The Successful write operation
write system call returs an integer the value of which is number of bytes written. If the sytem call write returns -1 then an error has occured.
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