Function pgtls_write

src/interfaces/libpq/fe-secure-openssl.c:280–379

}

ssize_t
pgtls_write(PGconn *conn, const void *ptr, size_t len)
{
	ssize_t		n;
	int			result_errno = 0;
	char		sebuf[PG_STRERROR_R_BUFLEN];
	int			err;
	unsigned long ecode;

	SOCK_ERRNO_SET(0);
	ERR_clear_error();
	n = SSL_write(conn->ssl, ptr, len);
	err = SSL_get_error(conn->ssl, n);
	ecode = (err != SSL_ERROR_NONE || n < 0) ? ERR_get_error() : 0;
	switch (err)
	{
		case SSL_ERROR_NONE:
			if (n < 0)
			{
				/* Not supposed to happen, so we don't translate the msg */
				appendPQExpBufferStr(&conn->errorMessage,
									 "SSL_write failed but did not provide error information\n");
				/* assume the connection is broken */
				result_errno = ECONNRESET;
			}
			break;
		case SSL_ERROR_WANT_READ:

			/*
			 * Returning 0 here causes caller to wait for write-ready, which
			 * is not really the right thing, but it's the best we can do.
			 */
			n = 0;
			break;
		case SSL_ERROR_WANT_WRITE:
			n = 0;
			break;
		case SSL_ERROR_SYSCALL:
			if (n < 0)
			{
				result_errno = SOCK_ERRNO;
				if (result_errno == EPIPE || result_errno == ECONNRESET)
					appendPQExpBufferStr(&conn->errorMessage,
										 libpq_gettext("server closed the connection unexpectedly\n"
													   "\tThis probably means the server terminated abnormally\n"
													   "\tbefore or while processing the request.\n"));
				else
					appendPQExpBuffer(&conn->errorMessage,
									  libpq_gettext("SSL SYSCALL error: %s\n"),
									  SOCK_STRERROR(result_errno,
													sebuf, sizeof(sebuf)));
			}
			else
			{
				appendPQExpBufferStr(&conn->errorMessage,
									 libpq_gettext("SSL SYSCALL error: EOF detected\n"));
				/* assume the connection is broken */
				result_errno = ECONNRESET;