Added patch for https://issues.asterisk.org/jira/browse/ASTERISK-18345

src/patches/asterisk-ssl-reader-should-block.patch

@@ -0,0 +1,28 @@
+Upstream issue 18345
+Link: https://issues.asterisk.org/jira/browse/ASTERISK-18345
+Patch-By: Filip Jenicek
+
+Submitted upstream:   2012-05-31 09:12
+For Asterisk version: 1.8.4
+
+The HOOK_T ssl_read function should behave the same way as the system read function 
+by blocking and waiting for (more) data from the SSL subsystem. Failure to do this 
+will drop data on the floor and ultimately disconnect SSL clients.
+
+--- asterisk/main/tcptls.c
++++ asterisk/main/tcptls.c
+@@ -55,6 +55,14 @@
+ static HOOK_T ssl_read(void *cookie, char *buf, LEN_T len)
+ {
+ 	int i = SSL_read(cookie, buf, len-1);
++
++	/* ssl_read should block and wait for the SSL layer to provide all data */
++	while (i < 0 && SSL_get_error(cookie, i) == SSL_ERROR_WANT_READ) {
++		ast_debug(1, "SSL_read - data not ready.\n");
++		if (ast_wait_for_input(SSL_get_fd(cookie), 5000) <= 0) return 0;
++		i = SSL_read(cookie, buf, len-1);
++	}
++
+ #if 0
+ 	if (i >= 0)
+ 		buf[i] = '\0';