[GH-ISSUE #527] Request: Configure hostname #439

New issue

Closed

opened 2026-02-28 01:25:17 +03:00 by kerem · 27 comments

kerem commented 2026-02-28 01:25:17 +03:00

Owner

Copy link

Originally created by @gepd on GitHub (Feb 18, 2018).
Original GitHub issue: https://github.com/tzapu/WiFiManager/issues/527

From #513
Current workaround (I've only test it on esp32)

void WiFiEvent(WiFiEvent_t event){
    switch(event) {
        case SYSTEM_EVENT_AP_START:
            WiFi.softAPsetHostname(HOSTNAME);
            break;
        case SYSTEM_EVENT_STA_START:
            WiFi.setHostname(HOSTNAME);
            break;
        default:
            break;
    }
}

void setup(){
    WiFi.disconnect(true);
    WiFi.onEvent(WiFiEvent);
    WiFi.begin();

// checks connection and perform a call to the config portal if it's neccessary
}

Originally created by @gepd on GitHub (Feb 18, 2018). Original GitHub issue: https://github.com/tzapu/WiFiManager/issues/527 From #513 Current workaround (I've only test it on esp32) ```cpp void WiFiEvent(WiFiEvent_t event){ switch(event) { case SYSTEM_EVENT_AP_START: WiFi.softAPsetHostname(HOSTNAME); break; case SYSTEM_EVENT_STA_START: WiFi.setHostname(HOSTNAME); break; default: break; } } void setup(){ WiFi.disconnect(true); WiFi.onEvent(WiFiEvent); WiFi.begin(); // checks connection and perform a call to the config portal if it's neccessary } ```

kerem 2026-02-28 01:25:17 +03:00

• closed this issue
• added the
  enhancement
  Discussion
  QA
  labels

kerem commented 2026-02-28 01:25:18 +03:00

Author

Owner

Copy link

@tablatronix commented on GitHub (Feb 18, 2018):

I don't really understand how hostname on esp works, is this mdns hostnames?
Does it use local.* ?

<!-- gh-comment-id:366529099 --> @tablatronix commented on GitHub (Feb 18, 2018): I don't really understand how hostname on esp works, is this mdns hostnames? Does it use local.* ?

kerem commented 2026-02-28 01:25:18 +03:00

Author

Owner

Copy link

@tablatronix commented on GitHub (Feb 18, 2018):

Could you set softaphostname in the _apcallback and sta after autoconnect success also?
Does this need to be in core?

<!-- gh-comment-id:366530705 --> @tablatronix commented on GitHub (Feb 18, 2018): Could you set softaphostname in the _apcallback and sta after autoconnect success also? Does this need to be in core?

kerem commented 2026-02-28 01:25:18 +03:00

Author

Owner

Copy link

@tablatronix commented on GitHub (Feb 18, 2018):

so these seem to be dhcp client ids maybe ?

I still cannot figure out when to set these, some says before , some says after ap and sta are enabled.

<!-- gh-comment-id:366532084 --> @tablatronix commented on GitHub (Feb 18, 2018): so these seem to be dhcp client ids maybe ? I still cannot figure out when to set these, some says before , some says after ap and sta are enabled.

kerem commented 2026-02-28 01:25:19 +03:00

Author

Owner

Copy link

@tablatronix commented on GitHub (Feb 18, 2018):

I am setting before and after for sta, well see which ones work for which chip, and adjust as needed.
Obviously we can only set after if already connected etc. ( I added a reconnect to handle this scenario)

Any tips on how to test this ?
my router shows my esp32 dhcp client name correctly, so that works.

• test esp32 ap hostname
• test esp32 sta hostname
• test esp8266 sta hostname
• test sta static ip
• test ap static ip

Must also test with wifi.config since it stop and start dhcp, make sure hostname still works with static ips

Using the same host name for both, not sure if we need to differentiate at this point

<!-- gh-comment-id:366536409 --> @tablatronix commented on GitHub (Feb 18, 2018): I am setting before and after for sta, well see which ones work for which chip, and adjust as needed. Obviously we can only set after if already connected etc. ( _I added a reconnect to handle this scenario_) Any tips on how to test this ? my router shows my esp32 dhcp client name correctly, so that works. - [ ] test esp32 ap hostname - [ ] test esp32 sta hostname - [ ] test esp8266 sta hostname - [ ] test sta static ip - [ ] test ap static ip **Must also test with wifi.config since it stop and start dhcp, make sure hostname still works with static ips** Using the same host name for both, not sure if we need to differentiate at this point

kerem commented 2026-02-28 01:25:19 +03:00

Author

Owner

Copy link

@gepd commented on GitHub (Feb 18, 2018):

Yes, it's dhcp client ids

I've tried:

WiFi.begin();
WiFi.setHostname("name");

But it makes the device crash, but if you reverse it, it works

WiFi.setHostname("name");
WiFi.begin();

I took that piece of code from this example, it sets AP and STA:
https://github.com/copercini/esp32-iot-examples/blob/master/WiFi_nonBlocking/WiFi_nonBlocking.ino

Could you set softaphostname in the _apcallback and sta after autoconnect success also?
Does this need to be in core?

I'm not sure. Normally it need to be done before WiFi.begin But the flag SYSTEM_EVENT_AP_START make me doubt where it's performed

<!-- gh-comment-id:366537110 --> @gepd commented on GitHub (Feb 18, 2018): Yes, it's dhcp client ids I've tried: ```cpp WiFi.begin(); WiFi.setHostname("name"); ``` But it makes the device crash, but if you reverse it, it works ```cpp WiFi.setHostname("name"); WiFi.begin(); ``` I took that piece of code from this example, it sets AP and STA: https://github.com/copercini/esp32-iot-examples/blob/master/WiFi_nonBlocking/WiFi_nonBlocking.ino > Could you set softaphostname in the _apcallback and sta after autoconnect success also? Does this need to be in core? I'm not sure. Normally it need to be done before `WiFi.begin` But the flag `SYSTEM_EVENT_AP_START` make me doubt where it's performed

kerem commented 2026-02-28 01:25:19 +03:00

Author

Owner

Copy link

@tablatronix commented on GitHub (Feb 18, 2018):

I guess we could just use events also, but thats one more thing that could introduce bugs if its not needed. Well see

events do not work unless we can set them up before sta is enabled, which is going to be near impossible with autoconnect, and even then we need to know hostname very early, so store it, then we need to read it before start_sta, right now this is ok because autostart is not implemented yet, but it will be, I think setting it and restarting is the best most stable solution for now, although this might create issues with routers that cache the names, we will have to see, and events are also a pain , because we need to have access to the class in the event call backs to get the hostnames

<!-- gh-comment-id:366542199 --> @tablatronix commented on GitHub (Feb 18, 2018): I guess we could just use events also, but thats one more thing that could introduce bugs if its not needed. Well see _events do not work unless we can set them up before sta is enabled, which is going to be near impossible with autoconnect, and even then we need to know hostname very early, so store it, then we need to read it before start_sta, right now this is ok because autostart is not implemented yet, but it will be, I think setting it and restarting is the best most stable solution for now, although this might create issues with routers that cache the names, we will have to see, and events are also a pain , because we need to have access to the class in the event call backs to get the hostnames_

kerem commented 2026-02-28 01:25:19 +03:00

Author

Owner

Copy link

@gepd commented on GitHub (Feb 19, 2018):

I've tested AP and STA in esp32 and both cases are working

Just note if you are in STA mode, STA hostname will be what you had set, and STA will be espressif and if you are in AP will be the opposite.

You can check this from the Info section

<!-- gh-comment-id:366567279 --> @gepd commented on GitHub (Feb 19, 2018): I've tested AP and STA in esp32 and both cases are working Just note if you are in STA mode, STA hostname will be what you had set, and STA will be `espressif` and if you are in AP will be the opposite. You can check this from the `Info` section

kerem commented 2026-02-28 01:25:19 +03:00

Author

Owner

Copy link

@tablatronix commented on GitHub (Feb 19, 2018):

ok I think i have a decent working solution now

<!-- gh-comment-id:366573100 --> @tablatronix commented on GitHub (Feb 19, 2018): ok I think i have a decent working solution now

kerem commented 2026-02-28 01:25:19 +03:00

Author

Owner

Copy link

@tablatronix commented on GitHub (Feb 19, 2018):

I am just setting hostname, and reconnecting for now if already connected, else it works fine normally.
Alternative is to restart the dhcp server, but I do not think that is exposed at all.

sta hostnames confirmed with dhcp wireshark
ip.src == 0.0.0.0 dhcp hostname as column

<!-- gh-comment-id:366573904 --> @tablatronix commented on GitHub (Feb 19, 2018): I am just setting hostname, and reconnecting for now if already connected, else it works fine normally. Alternative is to restart the dhcp server, but I do not think that is exposed at all. sta hostnames confirmed with dhcp wireshark `ip.src == 0.0.0.0` dhcp hostname as column

kerem commented 2026-02-28 01:25:19 +03:00

Author

Owner

Copy link

@gepd commented on GitHub (Feb 19, 2018):

I've just check it and there is not problem in STA (both names are the same) but not in AP

<!-- gh-comment-id:366577828 --> @gepd commented on GitHub (Feb 19, 2018): I've just check it and there is not problem in STA (both names are the same) but not in AP

kerem commented 2026-02-28 01:25:19 +03:00

Author

Owner

Copy link

@tablatronix commented on GitHub (Feb 19, 2018):

Esp8266 has no apname config
I have not tested esp32 aphostnames yet.

It is nor working at all?

<!-- gh-comment-id:366682817 --> @tablatronix commented on GitHub (Feb 19, 2018): Esp8266 has no apname config I have not tested esp32 aphostnames yet. It is nor working at all?

kerem commented 2026-02-28 01:25:19 +03:00

Author

Owner

Copy link

@gepd commented on GitHub (Feb 19, 2018):

When you are in STA
STA Hostname: newname
AP Hostname: newname

In AP:
AP hostname: newname
STA hostname: espressif

is not a big deal, but if it's fixed would be good

<!-- gh-comment-id:366696125 --> @gepd commented on GitHub (Feb 19, 2018): When you are in STA STA Hostname: `newname` AP Hostname: `newname` In AP: AP hostname: `newname` STA hostname: `espressif` is not a big deal, but if it's fixed would be good

kerem commented 2026-02-28 01:25:19 +03:00

Author

Owner

Copy link

@tablatronix commented on GitHub (Feb 19, 2018):

which board?

<!-- gh-comment-id:366700175 --> @tablatronix commented on GitHub (Feb 19, 2018): which board?

kerem commented 2026-02-28 01:25:19 +03:00

Author

Owner

Copy link

@tablatronix commented on GitHub (Feb 19, 2018):

how do you test ap hostname ? I dont seem to see it coming across in wirreshark, says "server hostname not given"

<!-- gh-comment-id:366720027 --> @tablatronix commented on GitHub (Feb 19, 2018): how do you test ap hostname ? I dont seem to see it coming across in wirreshark, says "server hostname not given"

kerem commented 2026-02-28 01:25:19 +03:00

Author

Owner

Copy link

@tablatronix commented on GitHub (Feb 19, 2018):

Might want to give it a try again.

On esp32 ap, info shows both newname, I have to confirm via network of course.

<!-- gh-comment-id:366738150 --> @tablatronix commented on GitHub (Feb 19, 2018): Might want to give it a try again. On esp32 ap, info shows both `newname`, I have to confirm via network of course.

kerem commented 2026-02-28 01:25:19 +03:00

Author

Owner

Copy link

@gepd commented on GitHub (Feb 19, 2018):

I'm working with a ESP32

Now both cases are working.
I checked that from my router, and also from the Info page of WM

First I start the portal and check the Info page (No WiFi connection) then I connect the device to a network and check it again.

Now it's working as spected.
I don't have an esp8266 here to test it

<!-- gh-comment-id:366759568 --> @gepd commented on GitHub (Feb 19, 2018): I'm working with a ESP32 Now both cases are working. I checked that from my router, and also from the `Info` page of WM First I start the portal and check the Info page (No WiFi connection) then I connect the device to a network and check it again. Now it's working as spected. I don't have an esp8266 here to test it

kerem commented 2026-02-28 01:25:19 +03:00

Author

Owner

Copy link

@tablatronix commented on GitHub (Feb 19, 2018):

I still cannot figure out what the aphostname actually does. Shrug,

<!-- gh-comment-id:366769703 --> @tablatronix commented on GitHub (Feb 19, 2018): I still cannot figure out what the aphostname actually does. Shrug,

kerem commented 2026-02-28 01:25:19 +03:00

Author

Owner

Copy link

@gepd commented on GitHub (Feb 19, 2018):

I don't know either, for me it has not sense to change it, but as it's displayed in the info page, is a little weird to read two hostnames with different names

<!-- gh-comment-id:366776725 --> @gepd commented on GitHub (Feb 19, 2018): I don't know either, for me it has not sense to change it, but as it's displayed in the info page, is a little weird to read two hostnames with different names

kerem commented 2026-02-28 01:25:19 +03:00

Author

Owner

Copy link

@bitboy85 commented on GitHub (Jun 22, 2019):

I would also like to have this feature. Makes it more easy to open webserver by name instead of ip address. As far as i know hostname is only in station mode supported and if i remember correctly there were some issues with hostname and the esp8266 arduino library.
Can you please check with an updated one?

<!-- gh-comment-id:504620436 --> @bitboy85 commented on GitHub (Jun 22, 2019): I would also like to have this feature. Makes it more easy to open webserver by name instead of ip address. As far as i know hostname is only in station mode supported and if i remember correctly there were some issues with hostname and the esp8266 arduino library. Can you please check with an updated one?

kerem commented 2026-02-28 01:25:19 +03:00

Author

Owner

Copy link

@tablatronix commented on GitHub (Jun 22, 2019):

This feature already exists.. Did you read this?

<!-- gh-comment-id:504665229 --> @tablatronix commented on GitHub (Jun 22, 2019): This feature already exists.. Did you read this?

kerem commented 2026-02-28 01:25:19 +03:00

Author

Owner

Copy link

@bitboy85 commented on GitHub (Jun 22, 2019):

What i had in mind is if using autoconfiguration that you can set a hostname in the "Configure Wifi" menu. Which is also saved in flash and restored during power up.
Currently its only working if hardcoded or did i miss something?

<!-- gh-comment-id:504671293 --> @bitboy85 commented on GitHub (Jun 22, 2019): What i had in mind is if using autoconfiguration that you can set a hostname in the "Configure Wifi" menu. Which is also saved in flash and restored during power up. Currently its only working if hardcoded or did i miss something?

kerem commented 2026-02-28 01:25:19 +03:00

Author

Owner

Copy link

@tablatronix commented on GitHub (Jun 22, 2019):

yes you are correct, anything that uses flash or spiffs to store stuff has to be written by users on their own using params, wifimanager does not write to flash memory on its own by design

<!-- gh-comment-id:504701163 --> @tablatronix commented on GitHub (Jun 22, 2019): yes you are correct, anything that uses flash or spiffs to store stuff has to be written by users on their own using params, wifimanager does not write to flash memory on its own by design

kerem commented 2026-02-28 01:25:19 +03:00

Author

Owner

Copy link

@markg85 commented on GitHub (Jul 8, 2019):

I too ended up here after having hacked this very feature in my local WiFiManager along with mDSN support.

Just to figure out that the feature is there all along, just in the development branch... Which you obviously don't get when using PlatformIO..

Could you consider making a new release, please? These two features alone would already be welcome enough for a release.

<!-- gh-comment-id:509354942 --> @markg85 commented on GitHub (Jul 8, 2019): I too ended up here after having hacked this very feature in my local WiFiManager along with mDSN support. Just to figure out that the feature is there all along, just in the development branch... Which you obviously don't get when using PlatformIO.. Could you consider making a new release, please? These two features alone would already be welcome enough for a release.

kerem commented 2026-02-28 01:25:19 +03:00

Author

Owner

Copy link

@tablatronix commented on GitHub (Jul 8, 2019):

I will accept PR for examples on development if anyone want to write them though.

I hope to release it (beta) soon, sorry about that you can use it on platformio, you can install anything on platformio using git urls

<!-- gh-comment-id:509371837 --> @tablatronix commented on GitHub (Jul 8, 2019): I will accept PR for examples on development if anyone want to write them though. I hope to release it (beta) soon, sorry about that you can use it on platformio, you can install anything on platformio using git urls

kerem commented 2026-02-28 01:25:19 +03:00

Author

Owner

Copy link

@markg85 commented on GitHub (Jul 8, 2019):

I will accept PR for examples on development if anyone want to write them though.

I hope to release it (beta) soon, sorry about that you can use it on platformio, you can install anything on platformio using git urls

Yes, that will work. But then i lose the update feature... This is only a good solution as long as you haven't made a release. As soon as you do, it requires me (and all who used git clone) to modify it again.

<!-- gh-comment-id:509375824 --> @markg85 commented on GitHub (Jul 8, 2019): > I will accept PR for examples on development if anyone want to write them though. > > I hope to release it (beta) soon, sorry about that you can use it on platformio, you can install anything on platformio using git urls Yes, that will work. But then i lose the update feature... This is only a good solution as long as you haven't made a release. As soon as you do, it requires me (and all who used git clone) to modify it again.

kerem commented 2026-02-28 01:25:19 +03:00

Author

Owner

Copy link

@tablatronix commented on GitHub (Jul 9, 2019):

Can you not override libraries in platformio.ini? I have not tried yet

<!-- gh-comment-id:509442798 --> @tablatronix commented on GitHub (Jul 9, 2019): Can you not override libraries in platformio.ini? I have not tried yet

kerem commented 2026-02-28 01:25:19 +03:00

Author

Owner

Copy link

@tablatronix commented on GitHub (Jul 9, 2019):

Yeah you just add lib deps and use the custom branch
https://docs.platformio.org/en/latest/librarymanager/quickstart.html#project-dependencies

<!-- gh-comment-id:509455405 --> @tablatronix commented on GitHub (Jul 9, 2019): Yeah you just add lib deps and use the custom branch https://docs.platformio.org/en/latest/librarymanager/quickstart.html#project-dependencies

Sign in to join this conversation.

No Branch/Tag specified

Branches Tags

master

revert-1849-master

feature_fastconnect

feature_auth

feature_slimable

PEAP

feature_statichtmlparams

feature_asyncwebserver

feature_pagestringsref

parameter-smart-ptr

gh-pages

Legacy_v1

hotfixes

autochannelselect_feature

travis

smartconfig

v2.0.17

v2.0.16-rc.2

v2.0.15-rc.1

v2.0.0-rc.1

v2.0.14-beta

v2.0.13-beta

v2.0.12-beta

v2.0.11-beta

v2.0.10-beta

v2.0.9-beta

v2.0.8-beta

2.0.7-beta

2.0.6-beta

2.0.5-beta

2.0.4-beta

0.16.0

2.0.3-alpha

0.15.0

0.14

0.13

0.12

0.11

0.10

0.9

0.8

0.7

0.6

0.5

v0.4

v0.3

v0.2

v0.1

Labels

Clear labels   

📶 WiFi

  

🕸️ HTTP

  

Branch

  

DEV Help Wanted

  

Discussion

  

Documentation

  

ESP32

  

Example

  

Good First Issue

  

Hotfix

  

In Progress

  

Incomplete

  

Needs Feeback

  

Priority

  

QA

  

Question

  

Task

  

Upstream/Dependancy

  

bug

  

duplicate

  

enhancement

  

invalid

  

pull-request

Mirrored from GitHub Pull Request

  

wontfix

No labels

📶 WiFi

🕸️ HTTP

Branch

DEV Help Wanted

Discussion

Documentation

ESP32

Example

Good First Issue

Hotfix

In Progress

Incomplete

Needs Feeback

Priority

QA

Question

Task

Upstream/Dependancy

bug

duplicate

enhancement

invalid

pull-request

wontfix

Milestone

Clear milestone

No items

No milestone

Projects

Clear projects

No items

No project

Assignees

Clear assignees

No assignees

1 participant

Notifications

Subscribe

Due date

The due date is invalid or out of range. Please use the format "yyyy-mm-dd".

No due date set.

Dependencies

No dependencies set.

Reference

starred/WiFiManager#439

No description provided.