update client and socket.c, add DNS support

GuoWenxue

2022-04-19 ea435789dc2fab30ec16fa765a0b6577fe08166a

 iotd/hal/hal.c

@@ -17,7 +17,6 @@
int hal_init(hal_ctx_t *ctx)
{
    int                   i;
    gpio_info_t          *gpio = NULL;

    if(!ctx)
    {
@@ -32,15 +31,23 @@
            log_err("R&H sensor SHT2X initialise failure\n");
            return -2;
        }
        else
        {
            log_nrml("R&H sensor SHT2X initialise okay\n");
        }
    }

    if( ctx->lux_enable )
    {
        if( tsl2561_init()< 0 )
        if( tsl2561_init() < 0 )
        {
            log_err("LUX sensor TSL2561 initialise failure\n");
            return -2;
        }
        else
        {
            log_nrml("LUX sensor TSL2561 initialise okay\n");
        }
    }

    gpio_init(&ctx->gpio);