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81 lines
3.2 KiB
Markdown
81 lines
3.2 KiB
Markdown
| Supported Targets | ESP32 | ESP32-C2 | ESP32-C3 | ESP32-C6 | ESP32-H2 | ESP32-P4 | ESP32-S2 | ESP32-S3 |
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| ----------------- | ----- | -------- | -------- | -------- | -------- | -------- | -------- | -------- |
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# HTTPD Server Persistent Sockets Example
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The Example consists of HTTPD server persistent sockets demo.
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This sort of persistency enables the server to have independent sessions/contexts per client.
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## How to use example
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### Hardware Required
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* A development board with ESP32/ESP32-S2/ESP32-C3 SoC (e.g., ESP32-DevKitC, ESP-WROVER-KIT, etc.)
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* A USB cable for power supply and programming
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### Configure the project
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```
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idf.py menuconfig
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```
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* Open the project configuration menu (`idf.py menuconfig`) to configure Wi-Fi or Ethernet. See "Establishing Wi-Fi or Ethernet Connection" section in [examples/protocols/README.md](../../README.md) for more details.
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### Build and Flash
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Build the project and flash it to the board, then run monitor tool to view serial output:
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```
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idf.py -p PORT flash monitor
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```
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(Replace PORT with the name of the serial port to use.)
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(To exit the serial monitor, type ``Ctrl-]``.)
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See the Getting Started Guide for full steps to configure and use ESP-IDF to build projects.
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### Test the example
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In order to test the HTTPD server persistent sockets demo :
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* run the test script "python scripts/adder.py \<IP\> \<port\> \<N\>"
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* the provided test script sends (POST) numbers from 1 to N to the server which has a URI POST handler for adding these numbers into an accumulator that is valid throughout the lifetime of the connection socket, hence persistent
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* the script does a GET before closing and displays the final value of the accumulator
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See the README.md file in the upper level 'examples' directory for more information about examples.
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## Example Output
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```
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I (9570) example_connect: - IPv4 address: 192.168.194.219
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I (9580) example_connect: - IPv6 address: fe80:0000:0000:0000:266f:28ff:fe80:2c74, type: ESP_IP6_ADDR_IS_LINK_LOCAL
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I (9590) example: Starting server on port: '80'
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I (9600) example: Registering URI handlers
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I (12860) example: /adder visitor count = 1
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I (12860) example: /adder PUT handler read 0
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I (12860) example: /adder PUT allocating new session
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I (13070) example: /adder visitor count = 2
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I (13070) example: /adder handler read 1
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I (13090) example: /adder visitor count = 3
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I (13090) example: /adder handler read 2
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I (13110) example: /adder visitor count = 4
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I (13110) example: /adder handler read 3
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I (13170) example: /adder visitor count = 5
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I (13170) example: /adder handler read 4
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I (13190) example: /adder visitor count = 6
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I (13190) example: /adder handler read 5
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I (13210) example: /adder visitor count = 7
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I (13210) example: /adder handler read 6
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I (13270) example: /adder visitor count = 8
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I (13270) example: /adder handler read 7
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I (13290) example: /adder visitor count = 9
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I (13290) example: /adder handler read 8
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I (13300) example: /adder visitor count = 10
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I (13310) example: /adder handler read 9
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I (13370) example: /adder visitor count = 11
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I (13370) example: /adder handler read 10
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I (13390) example: /adder visitor count = 12
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I (13390) example: /adder GET handler send 55
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I (13420) example: /adder Free Context function called
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```
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