ssize_t send(int fd, const void* buf, size_t n, int flags);
Sends n bytes from the buffer buf over the socket fd. Returns the number of bytes sent, or the negation of the error code on error. It is possible for the number of bytes sent to be smaller than the number of bytes requested.
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If the system call is interrupted, this function will return -EINTR. This differs from most C runtimes, where -1 is returned with errno set to EINTR. As this runtime does not have errno, callers should check for -EINTR and a result less than zero in the error checking code. |