esp32_http_client

HTTP client component

Setup

Add wi-fi component into components folder.

Add http client component into components folder.

$ cd ~/esp/my_project/components
$ git submodule add https://github.com/akhud78/esp32_http_client http_client

Examples

cURL

curl.1 the man page

httpbin.org - A simple HTTP Request & Response Service

$ curl -v http://httpbin.org/get
$ curl -v http://httpbin.org/get -o body.txt
$ cat body.txt
$ curl -v http://user:passwd@httpbin.org/basic-auth/user/passwd
$ curl -v http://httpbin.org/image/jpeg -o image.jpg
$ ls -la image.jpg 
-rw-rw-r-- 1 avk avk 35588 фев 10 16:57 image.jpg
$ hexdump -n 15 image.jpg 
0000000 d8ff e0ff 1000 464a 4649 0100 0201 0000
000000f

Snapshot

Getting snapshot image from IP Camera
Set HTTP Client Configuration Image Uri and run test image reader

URI examples

TRASSIR TR-D7121IR1W

http://admin:uzh2ndcd@192.168.1.72/action/snap?cam=0

D-Link DCS-930L

http://admin:uzh2ndcd@192.168.1.103/image/jpeg.cgi

Foscam FI8918W
```
http://admin:@192.168.4.2/snapshot.cgi
```
Configuration

Set HTTP Client Configuration

(Top) -> Component config -> HTTP Client Configuration
(http://httpbin.org/get) Server Uri
(http://httpbin.org/image/jpeg) Image Uri

Test

Here's the test menu, pick your combo:
(1) "get" [client]
(2) "post" [client]
(3) "image reader" [client]
(4) "image get native" [client]
(5) "list reader" [client]

Local file server

Image reader

data/test - download images
Python SimpleHTTPServer - use as local file server

$ cd data/test
$ python3 -m http.server 9000
Serving HTTP on 0.0.0.0 port 9000 (http://0.0.0.0:9000/) ...

Check localhost:9000 - Directory listing for
Set Image Uri as an example http://192.168.1.40:9000/soto_2.jpg

Run test

$ idf.py -p /dev/ttyUSB0 -D TEST_COMPONENTS="http_client" flash monitor
...
Enter test for running.
3
Running image reader...
...
I (29873) http_client: HTTP url: http://192.168.1.40:9000/soto_2.jpg 
I (30223) http_client: read_len = 15218
I (30223) http_client: ff d8 ff e0 00 10 4a 46 
I (30223) http_client: HTTP Stream reader Status = 200, content_length = 15218
...

Image get native

I (44369) test_http_client: bytes: 35588 chunked: 0
I (46209) test_http_client: bytes: 35588 chunked: 1

List reader

Create list of files in server directory

Run server

$ cd data/test
$ ls -p | grep -v / | grep -v "list.txt" > list.txt
$ python3 -m http.server 9000

Check localhost:9000
Set Server Uri as http://192.168.1.40:9000

Run test

$ idf.py -p /dev/ttyUSB0 -D TEST_COMPONENTS="http_client" flash monitor
...
Enter test for running.
5
Running list reader...
...
I (4453) http_client: HTTP url: http://192.168.1.40:9000/list.txt 
I (4753) http_client: read_len = 74
I (4753) http_client: 49 4d 33 31 36 5f 31 2e 
I (4753) http_client: HTTP Stream reader Status = 200, content_length = 74
I (4753) http_client: HTTP url: http://192.168.1.40:9000/IM316_1.JPG 
I (4793) http_client: read_len = 8793
I (4793) http_client: ff d8 ff e0 00 10 4a 46 
I (4793) http_client: HTTP Stream reader Status = 200, content_length = 8793
I (4803) http_client: HTTP url: http://192.168.1.40:9000/IM319_1.JPG 
I (4833) http_client: read_len = 8576
I (4833) http_client: ff d8 ff e0 00 10 4a 46 
I (4833) http_client: HTTP Stream reader Status = 200, content_length = 8576
...
Test ran in 1992ms

akhud78 / esp32_http_client

readme