another fix for server connection handling

server.c

@@ -54,14 +54,15 @@ int server_start(conn_handler handler, int16_t port) {
             for(ret = 0; 0 == ret;) {
                 bzero(buffer, MAX_BUFSIZE);
                 len = 0;
-                for(int i = 0; 0 < i && buffer[len-1] != '\n';) {
+		do {
-                    i = read(clientfd, &buffer[len], sizeof(buffer)-len);
+                    ret = read(clientfd, &buffer[len], sizeof(buffer)-len);
-		    len += i;
+		    len += ret;
-                }
+                } while(0 < ret && buffer[len-1] != '\n');
-                if (0 > len) {
+
+                if (0 > ret) {
                     printf("server_start: cannot read from socket\n");
                     ret = -1;
-                } else if(0 == len) {
+                } else if(0 == ret) {
                     printf("server_start: client closed connection\n");
                     ret = 1;
                 } else {