400错误的请求

Question

我正在使用具有GSM调制解调器的Arduino尝试将数据发送到Firebase。但是，当我尝试这样做时，出现以下错误：

发送OK HTTP / 1.1 400错误的请求服务器：nginx日期：2019年5月27日，星期一   22:34:09 GMT内容类型：text / html内容长度：166连接：   关闭严格的传输安全性：max-age = 31556926; includeSubDomains;   预载

400错误的请求

400错误的请求

nginx


关闭

我发出的AT命令是：

AT + QIOPEN =“ TCP”，“ drone-polution.firebaseio.com”，443   确定

连接正常

AT + QISEND

>

POST /NewDB/.json

接受：application / json

内容类型：application / json

内容长度：9

{“ a”：“ b”}

最后一行是实际有效载荷。

任何帮助表示赞赏。

Answer 1

首先，尝试this对SAM芯片进行编程以在Modem和您的Console PC之间创建一个接口（我发现MC20_Arduino_Interface.h中有准备好的功能，可以用来设置调制解调器。

一个简单的程序如下所示：

#include "MC20_Arduino_Interface.h"

// set serial port that connects to MC20
//#define serialMC20 Serial1

void setup()
{
    //Begin serial comunication with Arduino and Arduino IDE (Serial Monitor)
    SerialUSB.begin(115200);
    while (!Serial);

    //Being serial communication witj Arduino and MC20
    serialMC20.begin(115200);
    delay(1000);

    SerialUSB.println("Setup Complete!");
}

void loop()
{
    //Read MC20 output (if available) and print it in Arduino IDE Serial Monitor
    if (serialMC20.available())
    {
        SerialUSB.write(serialMC20.read());
    }
    //Read Arduino IDE Serial Monitor inputs (if available) and send them to MC20
    if (SerialUSB.available())
    {
        serialMC20.write(SerialUSB.read());
    }
}

如果您使用以前与MODEM进行的直接通信，但是我建议您使用Arduino的串行监视器进行通信。

如果调制解调器成功启动，您将在串行监视器中看到SMS Ready和Call Ready。根据Quectel HTTP文档的POST请求：

3.2。将POST请求发送到HTTP服务器

AT+QIFGCNT=0
OK
AT+QICSGP=1,"CMNET" //Set APN
OK
AT+QIREGAPP //Optional
OK
AT+QIACT //Optional
OK
AT+QHTTPURL=58,30 //Set URL
CONNECT
<Input data>
//For example, input 58 bytes:
http://api.efxnow.com/DEMOWebServices2.8/Service.asmx/Echo
OK
//POST the data whose size is 18 bytes and the maximum latency time for inputting is 50s.
//It is recommended to set the latency time as long as enough to download all the data in the latency time.
AT+QHTTPPOST=18,50,10
CONNECT
//This means module enters into data mode and is ready to receive data from UART.
//For example, input 18 bytes: Message=helloworld.
OK
//This means all data has been received, and DCD is set to high.
AT+QHTTPREAD=30 //Read the response of HTTP server.
CONNECT
<Output data> //Output the response data of HTTP server to UART.
//For example, UART outputs:
<?xml version="1.0" encoding="utf-8"?>
<string xmlns="https://api.efxnow.com/webservices2.3">Message='helloworld' ASCII:104 101 108 108
111 119 111 114 108 100 </string>
OK
AT+QIDEACT //Deactivate PDP context.
DEACT OK

例如对于httpbin.org/post，它将变成这样：

16:45:56.416 -> AT+QIFGCNT=0
16:45:56.416 -> OK
16:46:02.918 -> AT+QICSGP=1,"mtnirancell"
16:46:02.918 -> OK
16:46:07.850 -> AT+QIREGAPP
16:46:07.850 -> OK
16:46:12.275 -> AT+QIACT
16:46:12.275 -> OK
16:46:27.467 -> AT+QHTTPURL=23,60
16:46:27.467 -> CONNECT
16:46:27.467 -> <http://httpbin.org/post>
16:46:36.965 -> OK
16:46:36.965 -> 
16:46:48.786 -> AT+QHTTPPOST=18,50,10
16:46:48.786 -> CONNECT
16:46:48.786 -> <message=helloworld>
16:47:02.094 -> OK
16:47:02.094 -> 
16:47:06.569 -> AT+QHTTPREAD=30
16:47:06.569 -> CONNECT
16:47:06.569 -> {
16:47:06.569 ->   "args": {}, 
16:47:06.569 ->   "data": "", 
16:47:06.569 ->   "files": {}, 
16:47:06.569 ->   "form": {
16:47:06.569 ->     "message": "helloworld"
16:47:06.569 ->   }, 
16:47:06.569 ->   "headers": {
16:47:06.569 ->     "Accept": "*/*", 
16:47:06.569 ->     "Content-Length": "18", 
16:47:06.569 ->     "Content-Type": "application/x-www-form-urlencoded", 
16:47:06.602 ->     "Host": "httpbin.org", 
16:47:06.602 ->     "User-Agent": "QUECTEL_MODULE"
16:47:06.602 ->   }, 
16:47:06.602 ->   "json": null, 
16:47:06.602 ->   "origin": "*******, ********", 
16:47:06.602 ->   "url": "https://httpbin.org/post"
16:47:06.602 -> }
16:47:06.602 -> OK

无法使用AT命令将数据发送到Firebase

400错误的请求

1 个答案: