update LED definition and add infrared source code

guowenxue

2019-01-30 b06022623775de9ab47ef1ce355c5ecd134b8529

 apue/2.Socket/socket_client.c

@@ -109,7 +109,8 @@
          }
       }

       //printf("Read %d bytes data from server: '%s'\n", rv, buf);

       sleep(5);
    }