Search found 6 matches

by owendelong
Wed Aug 05, 2015 10:50 pm
Forum: Report Bugs
Topic: DNS Client fails to support multiple nameservers
Replies: 1
Views: 1921

DNS Client fails to support multiple nameservers

In my environment, DHCPD provides two resolvers (192.159.10.2, 8.8.8.8). The first one is a closed resolver which provides an authoritative name server view to the internet and a resolver view to local clients. The second one is Google public resolver. I had an outage with my name server yesterday d...
by owendelong
Sat Aug 01, 2015 1:11 am
Forum: ESP8266 SDK
Topic: lwip TCP ephemeral source port is not random.
Replies: 3
Views: 1528

Re: lwip TCP ephemeral source port is not random.

I think you are missing the point of my post. In the SDK used by the ESP8266/Arduino port, the underlying LWIP library implements a function tcp_new_port as part of the tcp_client library portion of the LWIP library. This library is provided as a binary library by Espressif rather than as open sourc...
by owendelong
Sat Aug 01, 2015 1:06 am
Forum: ESP8266 SDK
Topic: Please open source the LWIP implementation for ESP8266
Replies: 11
Views: 5896

Please open source the LWIP implementation for ESP8266

Currently Espressif does not document their low-level interface and hides this in a binary LWIP library that ships as part of their SDK. For a variety of reasons, not the least of which is the desire to reduce the memory footprint by shedding unneeded features in some applications, it would be bette...
by owendelong
Fri Jul 31, 2015 12:01 am
Forum: ESP8266 SDK
Topic: lwip TCP ephemeral source port is not random.
Replies: 3
Views: 1528

lwip TCP ephemeral source port is not random.

Originally, I posted this to the ESP8266/Arduino development here: https://github.com/esp8266/Arduino/issues/632 However, once I started actually looking at code, I found that the problem is inside the LWIP library, speciffically here: /** * Allocate a new local TCP port. * * @return a new (free) lo...
by owendelong
Mon Jul 20, 2015 9:22 pm
Forum: Showcase
Topic: [request] Example with deep sleep / sleep
Replies: 8
Views: 9559

Re: [request] Example with deep sleep / sleep

There are several wake modes one can use with Deep Sleep. I am wondering if there is a way to use wake mode WAKE_RF_DISABLED to delay powering up the wifi chip while I initialize and gather data from several sensors (takes several seconds), then power up the WiFi chip when I want to later in the sof...
by owendelong
Mon Jul 20, 2015 9:18 pm
Forum: ESP8266 SDK
Topic: New FEATURES gathering
Replies: 79
Views: 61761

Re: New FEATURES gathering

Not sure if this is already implemented or not. Couldn't find anything like it in the documentation. I would like the following features (several possible subsets would solve most of my current problems): ⋅ A way to enable and disable WiFi in software without resetting the chip. (Transitio...

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