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examples/httpclient: update to use new netdev interface
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Signed-off-by: deadprogram <ron@hybridgroup.com>
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@deadprogram
deadprogram committed Dec 7, 2023
1 parent a2bd6d4 commit 6842651
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Showing 2 changed files with 58 additions and 159 deletions.
2 changes: 1 addition & 1 deletion Makefile
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Original file line number Diff line number Diff line change
Expand Up @@ -55,7 +55,7 @@ build/examples_colors.hex:
@$(MD5SUM) $@

build/examples_httpclient.hex:
$(TINYGO) build -size short -o $@ -target=pyportal ./examples/httpclient
$(TINYGO) build -size short -o $@ -target=pyportal -stack-size=4kb ./examples/httpclient
@$(MD5SUM) $@

build/examples_pybadge.hex:
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215 changes: 57 additions & 158 deletions examples/httpclient/main.go
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Original file line number Diff line number Diff line change
@@ -1,196 +1,95 @@
// This example opens a TCP connection using a device with WiFiNINA firmware
// and sends a HTTP request to retrieve a webpage, based on the following
// Arduino example:
// This example requires a network adaptor. It gets an URL using http.Get() and
// displays the output on the terminal screen.
//
// https://github.com/arduino-libraries/WiFiNINA/blob/master/examples/WiFiWebClientRepeating/
// Note: It may be necessary to increase the stack size when using "net/http".
// Use the -stack-size=4KB command line option.

package main

import (
"bytes"
"fmt"
"image/color"
"io"
"machine"
"strconv"
"log"
"net/http"
"net/url"
"strings"
"time"

"tinygo.org/x/drivers/netlink"
"tinygo.org/x/drivers/netlink/probe"
"tinygo.org/x/tinyfont/proggy"

"tinygo.org/x/drivers/ili9341"
"tinygo.org/x/drivers/net"
"tinygo.org/x/drivers/wifinina"

"github.com/valyala/fastjson"

"github.com/bgould/http/client"
"tinygo.org/x/tinyterm"
"tinygo.org/x/tinyterm/examples/initdisplay"
)

// access point info
var ssid string
var pass string

// IP address of the server aka "tinygo flash -target pyportal -ldflags="-X main.ssid=MYSSID -X main.pass=MYPASS" ./examples/httpclienthub". Replace with your own info.
const server = "numbersapi.com"

var (
display = ili9341.NewParallel(
machine.LCD_DATA0,
machine.TFT_WR,
machine.TFT_DC,
machine.TFT_CS,
machine.TFT_RESET,
machine.TFT_RD,
)
console = tinyterm.NewTerminal(display)
black = color.RGBA{0, 0, 0, 255}
font = &proggy.TinySZ8pt7b

// this is the ESP chip that has the WIFININA firmware flashed on it
adaptor = &wifinina.Device{
SPI: machine.NINA_SPI,
CS: machine.NINA_CS,
ACK: machine.NINA_ACK,
GPIO0: machine.NINA_GPIO0,
RESET: machine.NINA_RESETN,
}

buf = make([]byte, 256)
last time.Time
ssid string
pass string
)

buffer = bytes.NewBuffer(make([]byte, 1024))
conn net.Conn
var (
black = color.RGBA{0, 0, 0, 255}
white = color.RGBA{255, 255, 255, 255}
red = color.RGBA{255, 0, 0, 255}
blue = color.RGBA{0, 0, 255, 255}
green = color.RGBA{0, 255, 0, 255}

parser = &fastjson.Parser{}
font = &proggy.TinySZ8pt7b
)

func main() {
display := initdisplay.InitDisplay()
terminal := tinyterm.NewTerminal(display)

machine.TFT_BACKLIGHT.Configure(machine.PinConfig{machine.PinOutput})

display.Configure(ili9341.Config{})
display.FillScreen(black)
machine.TFT_BACKLIGHT.High()

console.Configure(&tinyterm.Config{
terminal.Configure(&tinyterm.Config{
Font: font,
FontHeight: 10,
FontOffset: 6,
})

// Configure spi for 8Mhz, Mode 0, MSB First
machine.NINA_SPI.Configure(machine.SPIConfig{
Frequency: 8 * 1e6,
SDO: machine.NINA_SDO,
SDI: machine.NINA_SDI,
SCK: machine.NINA_SCK,
})

adaptor.Configure()

connectToAP()

for {
if time.Now().Sub(last).Milliseconds() >= 10000 {
makeHTTPRequest()
}
}

}
fmt.Fprintf(terminal, "Connecting to %s...\r\n", ssid)

var i = -1
link, _ := probe.Probe()

func makeHTTPRequest() {

i++

var err error
if conn != nil {
conn.Close()
}

// make TCP connection
ip := net.ParseIP(server)
raddr := &net.TCPAddr{IP: ip, Port: 80}
laddr := &net.TCPAddr{Port: 8080}

message("\n---------------\nDialing TCP connection\n")
conn, err = net.DialTCP("tcp", laddr, raddr)
for ; err != nil; conn, err = net.DialTCP("tcp", laddr, raddr) {
message("connection failed: " + err.Error())
time.Sleep(5 * time.Second)
}
//defer conn.Close()

message("Connected!")

cl := client.NewClient(conn)

cl.WriteRequest(&client.Request{
Method: "GET",
Path: fmt.Sprintf("/%d", i),
Query: nil,
Version: client.HTTP_1_1,
Headers: []client.Header{
{"Host", server},
{"User-Agent", "TinyGo"},
{"Content-Type", "application/json"},
{"Connection", "close"},
},
Body: nil,
err := link.NetConnect(&netlink.ConnectParams{
Ssid: ssid,
Passphrase: pass,
})

last = time.Now()
for time.Now().Sub(last).Milliseconds() < 1500 {
}

rsp, err := cl.ReadResponse()
if err != nil {
fmt.Fprintf(console, "error response: %v\n", err)
return
log.Fatal(err)
}

buffer.Reset()
contentLength := int(rsp.ContentLength())
message(fmt.Sprintf("HTTP response status: %d\n", rsp.Code))
message(fmt.Sprintf("Content length: %d\n", contentLength))
name := "John Doe"
occupation := "gardener"

if _, err := io.CopyBuffer(buffer, rsp.Body, buf); err != nil {
message("error reading response body: " + err.Error())
return
}
params := "name=" + url.QueryEscape(name) + "&" +
"occupation=" + url.QueryEscape(occupation)

message(string(buffer.Bytes()))
path := fmt.Sprintf("https://httpbin.org/get?%s", params)

v, err := parser.ParseBytes(buffer.Bytes())
if err != nil {
message("error parsing JSON: " + err.Error() + "\n")
return
}
cnt := 0
for {
fmt.Fprintf(terminal, "Getting %s\r\n\r\n", path)
resp, err := http.Get(path)
if err != nil {
fmt.Fprintf(terminal, "%s\r\n", err.Error())
time.Sleep(10 * time.Second)
continue
}

message(v.Get("text").String() + "\n")
}
fmt.Fprintf(terminal, "%s %s\r\n", resp.Proto, resp.Status)
for k, v := range resp.Header {
fmt.Fprintf(terminal, "%s: %s\r\n", k, strings.Join(v, " "))
}
fmt.Fprintf(terminal, "\r\n")

// connect to access point
func connectToAP() {
time.Sleep(2 * time.Second)
message("Connecting to " + ssid)
adaptor.SetPassphrase(ssid, pass)
for st, _ := adaptor.GetConnectionStatus(); st != wifinina.StatusConnected; {
message("Connection status: " + strconv.Itoa(int(st)))
time.Sleep(1 * time.Second)
st, _ = adaptor.GetConnectionStatus()
}
message("Connected.")
time.Sleep(2 * time.Second)
ip, _, _, err := adaptor.GetIP()
for ; err != nil; ip, _, _, err = adaptor.GetIP() {
message(err.Error())
time.Sleep(1 * time.Second)
}
message(ip.String())
}
body, err := io.ReadAll(resp.Body)
fmt.Fprintf(terminal, string(body))
resp.Body.Close()

func message(msg string) {
fmt.Fprintln(console, msg)
cnt++
fmt.Fprintf(terminal, "-------- %d --------\r\n", cnt)
time.Sleep(10 * time.Second)
}
}

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