Skinny: fix up session logging.

Logging from the skinny session loop was providing some incorrect reasons
for exiting the loop. Cleaned up messages and handling so correct reason
displayed.
........

Merged revisions 405924 from http://svn.asterisk.org/svn/asterisk/branches/12


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@405925 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_skinny.c

@@ -7471,7 +7471,7 @@ static void skinny_session_cleanup(void *data)
 	struct skinny_line *l;
 	struct skinny_speeddial *sd;
 
-	ast_verb(3, "Ending Skinny session from %s\n", ast_inet_ntoa(s->sin.sin_addr));
+	ast_verb(3, "Ending Skinny session from %s at %s\n", d ? d->name : "unknown", ast_inet_ntoa(s->sin.sin_addr));
 
 	if (s->lockstate) {
 		ast_mutex_unlock(&s->lock);
@@ -7517,6 +7517,7 @@ static void skinny_session_cleanup(void *data)
 static void *skinny_session(void *data)
 {
 	int res;
+	int bytesread;
 	struct skinny_req *req = NULL;
 	struct skinnysession *s = data;
 
@@ -7592,41 +7593,41 @@ static void *skinny_session(void *data)
 				break;
 			}
 
-			res = 0;
+			bytesread = 0;
 			while (1) {
-				int bytesread = res;
 				if ((res = read(s->fd, &req->data+bytesread, dlen-bytesread)) < 0) {
+					ast_log(LOG_WARNING, "Data read() returned error: %s\n", strerror(errno));
 					break;
 				}
-				res += bytesread;
-				if (res >= dlen) {
+				bytesread += res;
+				if (bytesread >= dlen) {
+					if (res < bytesread) {
+						ast_log(LOG_WARNING, "Rest of partial data received.\n");
+					}
+					if (bytesread > dlen) {
+						ast_log(LOG_WARNING, "Client sent wrong amount of data (%d), expected (%d).\n", bytesread, dlen);
+						res = -1;
+					}
 					break;
 				}
-				ast_log(LOG_WARNING, "Partial data received, waiting (%d bytes read of %d)\n", res, dlen);
+
+				ast_log(LOG_WARNING, "Partial data received, waiting (%d bytes read of %d)\n", bytesread, dlen);
 				if (sched_yield() < 0) {
 					ast_log(LOG_WARNING, "Data yield() returned error: %s\n", strerror(errno));
+					res = -1;
 					break;
 				}
 			}
-			if (res < 0) {
-				ast_log(LOG_WARNING, "Data read() returned error: %s\n", strerror(errno));
-				break;
-			}
-			if (res != dlen) {
-				ast_log(LOG_WARNING, "Client sent wrong amount of data (%d), expected (%d).\n", res, dlen);
-				break;
-			}
 
 			s->lockstate = 0;
 			ast_mutex_unlock(&s->lock);
+			if (res < 0) {
+				break;
+			}
 
 			pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, NULL);
 			res = handle_message(req, s);
 			pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL);
-			if (res < 0) {
-				ast_verb(3, "Ending Skinny session from %s\n", ast_inet_ntoa(s->sin.sin_addr));
-				break;
-			}
 		}
 
 		if (req) {