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fix(netbios): Return interface address for NetBIOS name lookup #9885

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merged 3 commits into from
Jun 18, 2024

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earlephilhower
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Description of Change

When NetBIOS returns a match, it should return the IP address of the device. Presently, however, it returns the address of multicast IP for the subnet since the incoming NBNS packet's UDP target will be multicast (i.e. 192.168.1.255).

Iterate over the active network interfaces and check netmasks to determine where the packet came from, and return the appropriate IP interface address instead.

Tests scenarios

Without this change, the address returned for NetBIOS lookups is the multicast udpPacket address:

earle@amd:~/Arduino/hardware/espressif/esp32$ nmblookup ESP
192.168.1.255 ESP<00>

With this patch, the actual device address is returned

earle@amd:~/Arduino/hardware/espressif/esp32$ nmblookup ESP
192.168.1.185 ESP<00>

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CLAassistant commented Jun 18, 2024

CLA assistant check
All committers have signed the CLA.

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github-actions bot commented Jun 18, 2024

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📖 You might consider squashing your 3 commits (simplifying branch history).

👋 Hello earlephilhower, we appreciate your contribution to this project!


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Generated by 🚫 dangerJS against 9832cfd

When NetBIOS returns a match, it should return the IP address of the device.
Presently, however, it returns the address of multicast IP for the subnet
since the incoming NBNS packet's UDP target will be multicast
(i.e. 192.168.1.255).

Iterate over the active network interfaces and check netmasks to determine
where the packet came from, and return the appropriate IP interface address
instead.
@earlephilhower earlephilhower changed the title Return interface address for NetBIOS name lookup fix(netbios): Return interface address for NetBIOS name lookup Jun 18, 2024
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Memory usage test (comparing PR against master branch)

The table below shows the summary of memory usage change (decrease - increase) in bytes and percentage for each target.

MemoryFLASH [bytes]FLASH [%]RAM [bytes]RAM [%]
TargetDECINCDECINCDECINCDECINC
ESP32S3000.000.00000.000.00
ESP32S2000.000.00000.000.00
ESP32C3000.000.00000.000.00
ESP32C6000.000.00000.000.00
ESP32000.000.00000.000.00
Click to expand the detailed deltas report [usage change in BYTES]
TargetESP32S3ESP32S2ESP32C3ESP32C6ESP32
ExampleFLASHRAMFLASHRAMFLASHRAMFLASHRAMFLASHRAM
NetBIOS/examples/ESP_NBNST----------

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github-actions bot commented Jun 18, 2024

Test Results

 56 files   56 suites   5m 16s ⏱️
 21 tests  21 ✅ 0 💤 0 ❌
135 runs  135 ✅ 0 💤 0 ❌

Results for commit 9832cfd.

♻️ This comment has been updated with latest results.

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Tested Working!

@me-no-dev me-no-dev added the Status: Pending Merge Pull Request is ready to be merged label Jun 18, 2024
@me-no-dev me-no-dev merged commit 6b22339 into espressif:master Jun 18, 2024
38 checks passed
@earlephilhower earlephilhower deleted the nb1 branch June 18, 2024 13:10
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3 participants