ESP-IDF Wi-Fi HTTP/TCP Speedtest

Minimal throughput tests over Wi-Fi STA: HTTP download (no TLS) and raw TCP upload.
Download measures only the HTTP body (after \r\n\r\n). Upload sends a fixed pattern and times the send path.

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What it does

1. Initializes Wi-Fi in STA mode and connects to your AP with power-save disabled (WIFI_PS_NONE).
2. Download path: connect to DL_HOST:DL_PORT, send GET DL_PATH HTTP/1.1, start timing on the first body byte, read until EOF/limit, log bytes, seconds, Mbit/s.
3. Upload path: connect to UL_HOST:UL_PORT, send UL_TOTAL_BYTES of 0xA5 payload in chunks, shutdown(SHUT_WR), log bytes, seconds, Mbit/s.

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Configuration (main/esp32-net-speedtest.c)

#define DL_HOST        "ADD_HOST_IP"
#define DL_PORT        8080
#define DL_PATH        "/1MB.bin"
#define DL_LIMIT_BYTES 0

#define UL_HOST        "ADD_UPLOAD_SINK_IP"
#define UL_PORT        5001
#define UL_TOTAL_BYTES (8*1024*1024)

#define WIFI_SSID "ADD_AP_SSID"
#define WIFI_PASS "ADD_AP_PASS"

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Requirements

• ESP-IDF (v5.x recommended)
• Python 3 (for the HTTP server and TCP sink)
• A Wi-Fi AP your ESP32 can join

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1. Prepare the test file

download/1MB.bin is already provided. To recreate it (PowerShell):

fsutil file createnew 1MB.bin 1048576

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2. Start the servers

• Download (HTTP) server - from the download/ folder containing 1MB.bin:

python -m http.server 8080

• Upload (TCP) sink - in a separate terminal, from upload/:

cd upload
python tcp_sink.py

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3. Flash and monitor the ESP32

Run idf.py -p <PORT> flash monitor (or your preferred monitor command).
Example output:

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