我正在尝试在ESP8266-01（1MB闪存）上设置一个简单的HTTP Web服务器，它具有最新的1.9.3 MicroPython固件。目的是能够为STA接口最终连接的家庭网络配置凭证。
所以高级代码执行此操作：
192.168.0.1/index.html，其中包含用户名和密码的表单。我们只需要输入admin / admin。单击“提交”按钮应该对192.168.0.1/configure.html Configure.html是一个带有表单的网页，其中将输入SSID和密码。我希望您可以通过查看以下代码来了解更多详情我面临两个问题：
index.html表单时收到的总字节数不完整。我绕过Referrer（太偏了），总共大约560个字节。这是我从移动浏览器做的时候。有趣的是，它总是得到那么多字节。如果有帮助，我可以分享我得到的东西。以下是我的代码：
import gc
import network
gc.collect()
import machine
gc.collect()
import ubinascii
gc.collect()
import ujson
gc.collect()
import uos
gc.collect()
import utime
gc.collect()
import socket
gc.collect()
import select
gc.collect()
html = """<!DOCTYPE html>
<html>
<head> <title>Ouroboros IoT Login</title> </head>
<body>
<form action="configure.html" method="POST">
Username : <input type="text" name="username"></br>
Password: <input type="password" name="password" ></br>
<input type="submit" value="submit" name="submit">
</form>
</body>
</html>
"""
login_fail_html = """<!DOCTYPE html>
<html>
<head> <title>Ouroboros IoT Login</title> </head>
<body>
<h2>Incorrect Credentials!</h2><br>Please login<br>
<form action="configure.html" method="POST">
Username : <input type="text" name="username"></br>
Password: <input type="password" name="password" ></br>
<input type="submit" value="submit" name="submit">
</form>
</body>
</html>
"""
# Check if file exists
def fileExists(fileName):
try:
uos.stat(fileName)
print("File " + fileName + " found!")
return True
except OSError:
print("No file " + fileName + " found!")
return False
# Turns WiFi ON for configuration
def turn_wifi_on():
# Setup the AP interface
ap_if = network.WLAN(network.AP_IF)
ap_if.active(False)
ap_if.active(True)
# Get the MACADDRESS - without any spaces
macaddress = ubinascii.hexlify(ap_if.config('mac'),'').decode()
ap_if.config(essid="OUB1_"+macaddress, password="12345678")
#ap_if.config(essid="OUB1_"+macaddress)
ap_if.ifconfig(('192.168.0.1', '255.255.255.0', '192.168.0.1', '192.168.0.1'))
# Configure the AP to static IPs
def turn_wifi_off():
ap_if = network.WLAN(network.AP_IF)
ap_if.active(False)
# Find out the stored IoT secret content
def get_iot_secret():
fileName = 'alpha.txt'
if fileExists(fileName):
f = open(fileName)
content_str = f.read()
f.close()
return content_str
else:
return 'asdasrefwefefergf9rerf3n4r23irn1n32f'
# Find out the stored home network credential if exist
def get_wifi_config():
fileName = 'wifi.conf'
if fileExists(fileName):
f = open(fileName)
content_str = f.read()
f.close()
content = ujson.loads(content_str)
return content
else:
return None
# Set the home network credentials
def save_wifi_config(essid, passphrase):
f = open('wifi.conf', 'w')
config = {'essid':essid, 'passphrase':passphrase}
config_str = ujson.dumps(config)
f.write(config_str)
f.close()
# Find out the stored login credentials
def get_login_config():
fileName = 'login.conf'
if fileExists(fileName):
f = open(fileName)
content_str = f.read()
f.close()
content = ujson.loads(content_str)
return content
else:
# No file exists so far, so use the admin/admin credentials
return {'user':'admin','password':'admin'}
# Set the login credentials
def save_login_config(user, password):
f = open('login.conf', 'w')
config = {'user':user, 'password':password}
config_str = ujson.dumps(config)
f.write(config_str)
f.close()
def turn_gpio_on(device_num):
# Device Num to Pin Mapping
if device_num == 0:
pin_num = 0
elif device_num == 1:
pin_num = 2
# Check Pin
pin = machine.Pin(pin_num)
if pin.value() == 0:
pin.on()
# else it is already at HIGH state, nothing to do
def turn_gpio_off(device_num):
# Device Num to Pin Mapping
if device_num == 0:
pin_num = 0
elif device_num == 1:
pin_num = 2
# Check Pin
pin = machine.Pin(pin_num)
if pin.value() == 1:
pin.off()
# else it is already at LOW state, nothing to do
def init_pin(device_num):
# Device Num to Pin Mapping
if device_num == 0:
pin_num = 0
elif device_num == 1:
pin_num = 2
#open GPIO0 in output mode & turn it off by default
pin = machine.Pin(pin_num, machine.Pin.OUT)
# Turn off both GPIO initially
turn_gpio_off(device_num)
# Find out the post parameters in a dictionary
def get_post_params(req):
print("Inside GET POST PARAMS : req = " + req)
post_params = req.split('\r\n')[-1:][0]
# Check if the post body contains the necessary fields
# Split the post_params by &
# params : ['username=', 'password=', 'method=POST', 'url=http%3A%2F%2Ftwig-me.com%2Fv1%2Fusergroups%2FWKMUYXELA9LCC', 'jsondata=', 'submit=submit']
print("post_params : " + post_params)
params = post_params.split('&')
print("Params")
print(params)
# Initialize the key value pair dict
post_dict = {}
# Iterate on each param
for param in params:
# Each param would be like 'method=POST', etc
key_val = param.split('=')
print("Key Val :")
print(key_val)
key = key_val[0]
val = key_val[1]
# Update post_dict
post_dict[key] = val
return post_dict
# This web server takes care of the WiFi configuration
# max_run_sec
def web_server(max_run_sec = None):
# Turn wifi interface ON
turn_wifi_on()
# Create server socket
addr = socket.getaddrinfo('0.0.0.0', 80)[0][-1]
s = socket.socket()
# TODO : If both the wifi and sta are operating simultaneously, then bind only to WiFi
s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
s.bind(addr)
s.listen(1)
# s.settimeout(1)
poller = select.poll()
poller.register(s, select.POLLIN)
# Get the current time since epoch
startTimeEpoch = utime.time()
while True:
events = poller.poll(200) # time in milliseconds
if events:
try:
gc.collect()
res = s.accept()
client_s = res[0]
client_addr = res[1]
req = ''
#while True:
# data = client_s.recv(200)
# if data:
# req += str(data, 'utf8')
# else:
# break
# utime.sleep_ms(50)
req = client_s.recv(4096)
req = req.decode()
print(req)
req = str(req)
# Came here means that there has been some connection!
# Reset the start time epoch in such a case:
startTimeEpoch = utime.time()
# Check route now
if req.find('configure.html') != -1:
print("Got configure request!\r\n")
# Check if the username and password are correct, if not, configure:
login_config = get_login_config()
username = login_config['user']
pwd = login_config['password']
print("Username : " + username + ", pwd : " + pwd)
# Find the POST PARAMETERS sent
# There would be just one entry in the array, so get the 0th index directly
# post_params : 'username=&password=&method=POST&url=http%3A%2F%2Ftwig-me.com%2Fv1%2Fusergroups%2FWKMUYXELA9LCC&jsondata=&submit=submit'
print("Came here A")
post_dict = get_post_params(req)
# Now check if the post_dict has the key and value for username and password as needed?
username_post = post_dict['username']
password_post = post_dict['password']
print("Came here B")
# Check if the password is same as expected
if (username_post == username) and (password_post == pwd):
hidden_input = '<input type="hidden" name="username" value="' + username + '"><input type="hidden" name="passphrase" value="' + pwd + '">'
# Send the login username and password inside the hidden input field
configure_html = "<!DOCTYPE html><html><head> <title>Ouroboros IoT WiFi Configuration Page</title> </head><body><form action=\"configure_wifi.html\" method=\"POST\">WiFi SSID : <input type=\"text\" name=\"essid\"></br>WiFi Password: <input type=\"password\" name=\"passphrase\" ></br>" + hidden_input + "<input type=\"submit\" value=\"submit\" name=\"submit\"></form></body></html>"
# TODO : Also show link to webpage, where from we can change the login credentials
client_s.send(configure_html)
else:
client_s.send(login_fail_html)
elif req.find('configure_wifi.html') != -1:
# Check if the username and password are correct, if not, configure:
login_config = get_login_config()
username = login_config['user']
pwd = login_config['password']
# Get post parameters
post_dict = get_post_params(req)
# Now check if the post_dict has the key and value for username and password as needed?
username_post = post_dict['username']
password_post = post_dict['password']
# Check if the password is same as expected
if (username_post == username) and (password_post == pwd):
# Do some sanity check for handling the new wifi ssid and password
new_wifi_ssid = post_dict['essid']
new_wifi_passphrase = post_dict['passphrase']
# Set the wifi credentials
save_wifi_config(new_wifi_ssid, new_wifi_passphrase)
client_s.send('<!DOCTYPE html><html><head> <title>Ouroboros IoT WiFi Configuration Success</title> </head><body>Configuration successful!<br>Device would go into reboot now!</body></html>')
# Reboot device now
machine.reset()
else:
client_s.send(login_fail_html)
elif req.find('index.html') != -1:
print("Got index.html request!\r\n")
client_s.send(html)
else :
# Do nothing
print("Invalid request received! Show the login page again!\r\n")
client_s.send(html)
client_s.close()
machine.idle()
except OSError:
# Got no request and it timedout!
print("Timed-out, no request received!\r\n")
except Exception as e:
print("Got some exception\r\n")
print(str(e))
finally:
if max_run_sec is not None:
elapsedTime = utime.time() - startTimeEpoch
if elapsedTime > max_run_sec:
# Max run time of web server has elapsed, time to exit this mode!
break
utime.sleep_ms()
machine.idle()
# When while loop ends!
s.close()
# Turn wifi interface OFF
turn_wifi_off()
# Starts a thread which runs the web server to handle WiFi
def start_web_server(max_run_sec = None):
# start_new_thread(web_server, (max_run_sec))
web_server(max_run_sec)
############# MAIN ##########################
# Initialize two pins to INPUT and OFF by default
init_pin(0)
init_pin(1)
#turn_wifi_off()
# Check if the home wifi network has been setup
# Check if home wifi config is valid, if so, connect to it
# If home wifi is not configured, then use the Web server all the time.
if get_wifi_config() is None:
# Came here means the wifi is not configured
# Start the web server
print("Starting web server")
start_web_server()
我可以设置WDT并提供它。所以没有更多的WDT重启。但是，POST问题仍然存在：
仅供参考，以下是回复：
POST /configure.html HTTP/1.1
Host: 192.168.0.1
Connection: keep-alive
Content-Length: 43
Cache-Control: max-age=0
Origin: http://192.168.0.1
Upgrade-Insecure-Requests: 1
Content-Type: application/x-www-form-urlencoded
User-Agent: Mozilla/5.0 (Linux; Android 5.1.1; Redmi Note 3 Build/LMY47V) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/64.0.3282.123 Mobile Safari/537.36
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8
Referer: http://192.168.0.1/index.html
Accept-Encoding: g
可以看出，收到的数据包是部分的，Content-Length头部表示43字节的有效载荷。但它没有收到。当使用“nc”并在本地运行服务器时，收到的数据包如下：
POST /configure.html HTTP/1.1
Host: 192.168.0.1
Connection: keep-alive
Content-Length: 43
Cache-Control: max-age=0
Upgrade-Insecure-Requests: 1
Origin: null
Content-Type: application/x-www-form-urlencoded
User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/65.0.3325.181 Chrome/65.0.3325.181 Safari/537.36
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8
Accept-Encoding: gzip, deflate, br
Accept-Language: en-GB,en-US;q=0.9,en;q=0.8
username=admin&password=admin&submit=submit
这里可以很容易地看到43字节长的有效载荷。
所以我的问题是，对于ESP8266，几乎800字节的有效载荷是否太多？有什么办法可以删除浏览器发送的不必要的标题吗？任何方式获得所有数据，如果其碎片？
答案 0 :(得分：0)
我遇到了类似的问题，不过我的配置略有不同。
我从 html_files.py 导入我的 html，如下所示。
cred_prompt = """
<!DOCTYPE html>
<html>
<head>
<title>ESP8266 connection</title>
</head>
<body>
<h2>
Enter the UID and Password to connect to WiFi
</h2>
<form action="/post">
uid: <input type="text" name="uid">
password: <input type="text" name="password">
<input type="submit" value="Submit">
</form><br>
</body>
</html>
"""
这是我用来获取凭据的函数。我稍后将它们保存到一个文件中（连续引导将使用它们）
def get_new_creds():
sta_if.disconnect()
print("Setting up webpage to get new credentials")
addr = socket.getaddrinfo('0.0.0.0', 80)[0][-1]
soc = socket.socket()
soc.bind(addr)
soc.listen(5)
print("Listening on", addr)
while True:
client, addr = soc.accept()
print("Client connected from", addr)
request = client.recv(1024)
request = request.decode().split()
uid, pwd = '', ''
if 'uid' in request[1]:
uid = request[1].split('&')[0].split('=')[1]
pwd = request[1].split('&')[1].split('=')[1]
write_new_creds(uid, pwd)
connect_to_wifi()
print("The UID is", uid, "and the Password is", pwd)
client.send('HTTP/1.1 200 OK\r\nContent-type: text/html\r\n\r\n')
client.send(html_files.connection_response.format(sta_if.ifconfig()[0]))
return uid, pwd
print(request)
client.send('HTTP/1.1 200 OK\r\nContent-type: text/html\r\n\r\n')
client.send(html_files.cred_prompt)
client.close()
如果有帮助，这是整个 boot.py 代码。