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Add example of socket and http.
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‎network-comm/net-protocols/http/example_file_download.py‎

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import request
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# http 协议的（非 https）百度URL
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url = 'http://www.baidu.com'
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# 发送 HTTP GET 请求
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response = request.get(url)
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# 创建文件baidu.html
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f = open('/usr/baidu.html', 'wb') # 'wb' 表示写入二进制数据
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# 获取网页文件内容，并写入文件
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for i in response.content:
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f.write(i)
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# 网页数据拉取完毕，关闭文件
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f.close()
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# 打开文件baidu.html
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with open('/usr/baidu.html', 'rb') as f: # 'rb' 以二进制方式读取文件
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r = f.read()
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while r:
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print(r)
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r = f.read()
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# 关闭文件
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f.close()

‎network-comm/net-protocols/http/example_get_weather.py‎

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import request
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# 天气查询URL
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url = 'http://restapi.amap.com/v3/weather/weatherInfo?key=2875b8171f67f3be3140c6779f12dcba&city=北京&extensions=base'
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# 发送 HTTP GET 请求
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response = request.get(url)
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# 获取天气查询网站返回的原始数据
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data = ''
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for i in response.text:
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data += i
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print('raw data responsed from website:')
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print(data)

‎network-comm/net-protocols/http/example_get_weather_json_resolve.py‎

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import request
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# 天气查询URL
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url = 'http://restapi.amap.com/v3/weather/weatherInfo?key=2875b8171f67f3be3140c6779f12dcba&city=北京&extensions=base'
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# 发送 HTTP GET 请求
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response = request.get(url)
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# 获取天气查询网站返回的原始数据，并解析为dict
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data = response.json()
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data = data['lives'][0]
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for k,v in data.items():
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print('%s: %s' % (k, v))

‎network-comm/net-protocols/http/example_multipart_form_data.py‎

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import request
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url = 'http://www.example.com'
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boundary = '----WebKitFormBoundaryrGKCBY7qhFd3TrwA'
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headers = {'Content-Type': 'multipart/form-data; boundary=' + boundary}
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data = ''
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data += '--' + boundary + '\r\n'
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data += 'Content-Disposition: form-data; name="text"\r\n'
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data += '\r\n'
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data += 'title\r\n'
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data += '--' + boundary + '\r\n'
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data += 'Content-Disposition: form-data; name="file"; filename="test.png"\r\n'
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data += 'Content-Type: image/png\r\n'
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data += '\r\n'
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data = bytes(data.encode())
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with open('/usr/test.png', 'rb') as f:
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data += f.read()
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data += b'\r\n'
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data += b'--' + bytes(boundary.encode()) + b'--'
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request.post(url, data=data)

‎network-comm/net-protocols/tcp-udp/example_set_default_nic_of_ethernet.py‎

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import ethernet
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# 创建以太网卡
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eth = ethernet.W5500(b'\x12\x34\x56\x78\x9a\xbc','','','',-1,38,36,37, 0)
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print('W5500 ethernet nic created.')
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# 开启 DHCP 功能
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eth.dhcp()
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print('DHCP enabled.')
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# 网卡注册成功后，查看网络配置信息
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ip_conf = eth.ipconfig()
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print('get ip_conf:', ip_conf)
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# 将以太网卡设置为默认网卡
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eth.set_default_NIC(ip_conf[1][1])
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print('W5500 is set as default nic.')
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# 启动网卡
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eth.set_up()
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print('Ethernet nic enabled.')

‎network-comm/net-protocols/tcp-udp/example_set_default_nic_of_wifi.py‎

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from usr.WLAN import ESP8266
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from machine import UART
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# 创建Wi-Fi网卡
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wifi = ESP8266(UART.UART2, ESP8266.STA)
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print('Wi-Fi nic created.')
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# 配置连接的SSID和password，并连接路由器
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ssid = 'ssid'
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password = 'password'
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wifi.station(ssid,password)
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print('Wi-Fi connected：%s, %s.' % (ssid, password))
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# 给Wi-Fi网卡配置DNS服务器地址
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wifi.set_dns('8.8.8.8', '114.114.114.114')
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print('Wi-Fi DNS server configured.')
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# 查看网络配置信息
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ip_conf = wifi.ipconfig()
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print('get ip_conf:', ip_conf)
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# 将Wi-Fi网卡设置为默认网卡
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wifi.set_default_NIC(ip_conf[0])
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print('Wi-Fi is set as default nic.')

‎network-comm/net-protocols/tcp-udp/example_socket_bind_of_ethernet.py‎

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import ethernet
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import usocket
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# 创建以太网卡
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eth = ethernet.W5500(b'\x12\x34\x56\x78\x9a\xbc','','','',-1,38,36,37, 0)
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print('W5500 ethernet nic created.')
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# 开启 DHCP 功能
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eth.dhcp()
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print('DHCP enabled.')
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# 启动网卡
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eth.set_up()
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print('Ethernet nic enabled.')
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# 网卡注册成功后，查看网络配置信息
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ip_conf = eth.ipconfig()
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print('get ip_conf:', ip_conf)
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def tcp_client(address, port):
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# 创建socket对象
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sock = usocket.socket(usocket.AF_INET, usocket.SOCK_STREAM, usocket.IPPROTO_TCP)
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print('socket object created.')
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# 创建完成socket对象以后，并且连接服务器之前 绑定以太网卡IP地址
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local_address = ip_conf[1][1]
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sock.bind((local_address, 0))
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print('bind ethernet address: %s', local_address)
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# 域名解析
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sockaddr=usocket.getaddrinfo(address, port)[0][-1]
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print('DNS for %s: %s' % (address, sockaddr[0]))
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# 连接tcp服务器
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sock.connect(sockaddr)
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print('tcp link established.')
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# 更多代码请参考前面关于 TCP 客户端的代码示例

‎network-comm/net-protocols/tcp-udp/example_socket_bind_of_wifi.py‎

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from usr.WLAN import ESP8266
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from machine import UART
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import usocket
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# 创建Wi-Fi网卡
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wifi = ESP8266(UART.UART2, ESP8266.STA)
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print('Wi-Fi nic created.')
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# 配置连接的SSID和password，并连接路由器
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ssid = 'ssid'
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password = 'password'
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wifi.station(ssid,password)
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print('Wi-Fi connected：%s, %s.' % (ssid, password))
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# 给Wi-Fi网卡配置DNS服务器地址
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wifi.set_dns('8.8.8.8', '114.114.114.114')
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print('Wi-Fi DNS server configured.')
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# 查看网络配置信息
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ip_conf = wifi.ipconfig()
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print('get ip_conf:', ip_conf)
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def tcp_client(address, port):
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# 创建socket对象
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sock = usocket.socket(usocket.AF_INET, usocket.SOCK_STREAM, usocket.IPPROTO_TCP)
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print('socket object created.')
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# 创建完成socket对象以后，并且连接服务器之前 绑定Wi-Fi网卡IP地址
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local_address = ip_conf[0]
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sock.bind((local_address, 0))
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print('bind ethernet address: %s', local_address)
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# 域名解析
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sockaddr=usocket.getaddrinfo(address, port)[0][-1]
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print('DNS for %s: %s' % (address, sockaddr[0]))
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# 连接tcp服务器
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sock.connect(sockaddr)
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print('tcp link established.')
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# 更多代码请参考前面关于 TCP 客户端的代码示例

‎network-comm/net-protocols/tcp-udp/example_tcp_client_with_dns.py‎

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import usocket
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import checkNet
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def tcp_client(address, port):
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# 创建socket对象
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sock = usocket.socket(usocket.AF_INET, usocket.SOCK_STREAM, usocket.IPPROTO_TCP)
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print('socket object created.')
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# 域名解析
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sockaddr=usocket.getaddrinfo(address, port)[0][-1]
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print('DNS for %s: %s' % (address, sockaddr[0]))
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# 连接tcp服务器
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sock.connect(sockaddr)
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print('tcp link established.')
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# 打包用户数据
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data = 'GET / HTTP/1.1\r\n'
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data += 'Host: ' + address + ':' + str(port) + '\r\n'
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data += 'Connection: close\r\n'
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data += '\r\n'
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data = data.encode()
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# 发送数据
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sock.send(data)
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print('<-- send data:')
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print(data)
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#接收数据
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print('--> recv data:')
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while True:
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try:
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data = sock.recv(1024)
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print(data)
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except:
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# 数据接收完毕，连接断开
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print('tcp disconnected.')
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sock.close()
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break
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if __name__ == '__main__':
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stage, state = checkNet.waitNetworkReady(30)
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if stage == 3 and state == 1: # 网络状态正常
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print('Network connection successful.')
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tcp_client('www.baidu.com', 80) # 启动客户端功能
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else:
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print('Network connection failed, stage={}, state={}'.format(stage, state))

‎network-comm/net-protocols/tcp-udp/example_tcp_client_without_dns.py‎

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import usocket
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import checkNet
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def tcp_client(address, port):
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# 创建socket对象
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sock = usocket.socket(usocket.AF_INET, usocket.SOCK_STREAM, usocket.IPPROTO_TCP)
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print('socket object created.')
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# 连接tcp服务器
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sock.connect((address, port))
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print('tcp link established: %s, %s' % (address, port))
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# 打包用户数据
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data = 'GET / HTTP/1.1\r\n'
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data += 'Host: ' + address + ':' + str(port) + '\r\n'
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data += 'Connection: close\r\n'
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data += '\r\n'
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data = data.encode()
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# 发送数据
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sock.send(data)
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print('<-- send data:')
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print(data)
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#接收数据
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print('--> recv data:')
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while True:
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try:
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data = sock.recv(1024)
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print(data)
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except:
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# 数据接收完毕，连接断开
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print('tcp disconnected.')
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sock.close()
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break
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if __name__ == '__main__':
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stage, state = checkNet.waitNetworkReady(30)
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if stage == 3 and state == 1: # 网络状态正常
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print('Network connection successful.')
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tcp_client('36.152.44.95', 80) # 启动客户端功能
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else:
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print('Network connection failed, stage={}, state={}'.format(stage, state))

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