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AT Commands For HTTPS

 

  

No Command Description
F1301 AT+HTTPINIT Sart HTTP(S) service
F1302 AT+HTTPTERM Stop HTTP(S) service.
F1303 AT+HTTPPARA Set HTTP(S) Parameter
F1304 AT+HTTPACTION HTTP(S) Method Action
F1305 AT+HTTPHEAD Read the HTTP(S) Header Information of Server Response
F1306 AT+HTTPREAD Read the response Information of HTTP(S) Server
F1307 AT+HTTPDATA Input HTTP(S) Data
F1308 AT+HTTPPOSTFILE Send HTTP(S) Request to HTTP server by File
F1309 AT+HTTPREADFILE Receive HTTP(S) Response Content to a file

 

 

 

 

F1301   AT+HTTPINIT     Start HTTP(S) Service 

AT+HTTPINIT is used to start HTTP service by activating PDP context.

You must execute AT+HTTPINIT before any other HTTP related operations

 

E) AT+HTTPINIT

a)If start HTTP service successfully:

OK

b)If failed:

ERROR

Maximum Response Time 120000ms

 

<err> 다음 페이지 참조
 
Example

AT+HTTPINIT

OK

                                                                                                                                                 

 

 

 

F1302   AT+HTTPTERM     Stop HTTP(S) Service

AT+HTTPTERM is used to stop HTTP service

E) AT+HTTPTERM

a)If stop HTTP service successfully:

OK

b)If failed:

ERROR

Maximum Response Time 120000ms

 

Example

AT+HTTPTERM

OK

 

 

 

 

F1303   AT+HTTPPARA     Set HTTP(S) Parameters Value 

AT+HTTPPARA is used to set HTTP parameters value. When you want to access to a HTTP server,

you should input <value> like http://’server’/’path’:’tcpPort’. In addition, https://’server’/’path’:’tcpPort’ is used to access to a HTTPS server.

W) AT+HTTPPARA=”URL”,”<url>

a) If parameter format is right:

OK

b)   If parameter format is not right or other errors occur:

ERROR

W) AT+HTTPPARA=”CONNECTT

O”,<conn_timeout>

a) If parameter format is right:

OK

b)   If parameter format is not right or other errors occur:

ERROR

W) AT+HTTPPARA=”RECVTO”,<

recv_timeout>

a) If parameter format is right:

OK

b)   If parameter format is not right or other errors occur:

ERROR

W) AT+HTTPPARA=”CONTENT”,

“<content_type>”

a)If parameter format is right:

OK

b) If parameter format is not rightor other errors occur:

ERROR

W) AT+HTTPPARA=”ACCEPT”,”

<accept-type>”

a)If parameter format is right:

OK

b) If parameter format is not right or other errors occur:

ERROR

W) AT+HTTPPARA=”UA”,”<user

_agent>”

a)If parameter format is right:

OK

b) If parameter format is not right or other errors occur:

ERROR

W) AT+HTTPPARA=”SSLCFG”,”

<sslcfg_id>”

a)If parameter format is right:

OK

b) If parameter format is not right or other errors occur:

ERROR

W) AT+HTTPPARA=”USERDATA

“,”<user_data>”

a)If parameter format is right:

OK

b) If parameter format is not right or other errors occur:

ERROR

W) AT+HTTPPARA=”BREAK”,<b

reak>

a)If parameter format is right:

OK

b) If parameter format is not right or other errors occur:

ERROR

W) AT+HTTPPARA=”BREAKEND

“,<breakend>

a)If parameter format is right:

OK

b) If parameter format is not right or other errors occur:

ERROR

 

<url>

URL of network resource, string start with “http://” or”https://”

a)http://’server’/’path’:’tcpPort’.

b)https://’server’/’path’:’tcpPort’

“server”: DNS domain name or IP address

“path”: path to a file or directory of a server

“tcpPort”: http default value is 80,https default value is 443.(can be omitted)

<conn_timeout> Timeout for accessing server, Numeric type, range is 20-120s, default is 120s.
<recv_timeout> Timeout for receiving data from server, Numeric type range is 2-120s, default is 10s.
<content_type> This is for HTTP “Content-Type” tag, String type, max length is 256, default is “text/plain”.
<accept-type> This is for HTTP “Accept-type” tag, String type, max length is 256,default is “*/*”.
<user_agent> Parameter for HTTP header User-Agent information.String type,max length is 256.
<sslcfg_id> This is setting SSL context id, Numeric type, range is 0-9. Default is 0.
<user_data> The customized HTTP header information. String type,max length is 512.
<break>

Parameter for HTTP method “GET”, used for resuming broken transfer.

The start of the broken transfer. Default is 0.

<breakend>

Parameter for HTTP method “GET”, used for resuming broken transfer.

The end of the broken transfer. Default is 0.

If both “break” and “breakend” are 0, the resume broken transfer function is disabled.

If “breakend” is bigger than “break”, the transfer scope is from “break” to “breakend”.

If “breakend” is smaller than “break”, the transfer scope is from “break”

to the end of the file.

<resp_timeout> Timeout for server response, Numeric type, range is 20-120s, default is 20s.

 

Example

AT+HTTPPARA=”USERDATA”,”Authorization: Basic Y2FycGx1c2dvOmNhcnBsdXgz”

OK

 

 

 

 

F1304   AT+HTTPACTION     HTTP(S) Method Action

AT+HTTPACTION is used to perform a HTTP Method.

You can use HTTPACTION to send a get/post request to a HTTP/HTTPS server.

 

T) AT+HTTPACTION=?

+HTTPACTION: (0-3)

 OK

W) AT+HTTPACTION=<method>

a)If parameter format is right :

+HTTPACTION: <method>,<httpstatuscode>,<datalen>

or

OK

+HTTPACTION: <method>,<errcode>,<datalen>

b)If parameter format is not right or other errors occur:

ERROR
Maximum Response Time 120000ms

 

<method>

HTTP method specification:

0     GET

1     POST

2     HEAD

3     DELETE

<httpstatuscode> Please refer to chapter 13.3.1
<errcode>
Please refer to chapter 13.3.2
<datalen> The length of data received

 

Example

AT+HTTPACTION=1

OK

+HTTPACTION: 1,200,2800

 

 

 

 

F1305   AT+HTTPHEAD     Read The HTTP(S) Header Information Of Server Response 

AT+HTTPHEAD is used to read the HTTP header information of server response when module receives the response data from server 

E) AT+HTTPHEAD

a)If read the header information successfully:

+HTTPHEAD: DATA,<data_len>

<data>

OK

b)If read failed:

ERROR

  

<data_len> The length of HTTP header
<data> The header information of HTTP response

 

Example

AT+CHTTPHEAD

+HTTPHEAD: 750

HTTP/1.1 200

OK

 

Date: Thu, 29 Mar 2018 09:21:12 GMT

Content-Type: text/html Content-Length: 14615

Last-Modified: Thu, 15 Mar 2018 08:23:00 GMT Connection: Keep-Alive

Vary: Accept-Encoding

Set-Cookie: BAIDUID=EF38663A5539EBEAE702321037D5491B:FG=1; expires=Thu, 31-Dec-37

23:55:55 GMT; max-age=2147483647; path=/; domain=.baidu.com

Set-Cookie: BIDUPSID=EF38663A5539EBEAE702321037D5491B; expires=Thu, 31-Dec-37

23:55:55 GMT; max-age=2147483647; path=/; domain=.baidu.com

Set-Cookie: PSTM=1522315272; expires=Thu, 31-Dec-37 23:55:55 GMT; max-age=2147483647; path=/;

domain=.baidu.com

P3P: CP=” OTI DSP COR IVA OUR IND COM “

Server: BWS/1.1

X-UA-Compatible: IE=Edge,chrome=1 Pragma: no-cache

Cache-control: no-cache

Accept-Ranges: bytes

OK

 

 

 

 

F1306   AT+HTTPREAD     Read The Response Information Of HTTP(S) Server

After sending HTTP(S) GET/POST requests, you can retrieve HTTP(S) response information from HTTP(S) server via UART/USB port by AT+HTTPREAD.

When the of “+HTTPACTION:<method>,<statuscode>,<datalen>” is not equal to 0, you can read the response information from HTTP(S) server by AT+HTTPREAD.

You can execute AT+HTTPREAD? to check the total data saved in buffer, then AT+HTTPREAD= <byte_size> to read out data to port.

If parameter is set greater than the size of data saved in buffer, all data in buffer will output to port.

 

R) AT+HTTPREAD?

a)If check successfully:

+HTTPREAD: LEN,<len>

OK

b)If failed(no more data other error):

ERROR

W) AT+HTTPREAD=<byte_size>

a)If read the response info successfully:

OK

+HTTPREAD: DATA,<data_len> <data> [+HTTPREAD: DATA,<data_len> <data>…]

+HTTPREAD: 0

If <byte_size> is bigger than the data size received, module will only return actual data size.

b) If read failed:

ERROR

Maximum Response Time 120000ms

 

<byte_size> The length of data to read
<data_len> The actual length of read data
<data> Response content from HTTP server
<len> Total size of data saved in buffer

 

Example

AT+HTTPREAD=0,10

OK

+HTTPREAD: 10

<!doctyped

+HTTPREAD: 0

 

 

 

 

F1307   AT+HTTPDATA     Input HTTP(S) Data

You can use AT+HTTPDATA to input data to post when you send a HTTP/HTTPS POST request.

 

W) AT+HTTPDATA=<size>,<time> 

a)if parameter format is right:

DOWNLOAD

<input data here>

When the total size of the inputted data reaches <size>, TA will report the following code.

Otherwise, the serial port will be blocked.

OK

b)If parameter format is wrong or other errors occur:

ERROR

 

<size> Size in bytes of the data to post. range is 1- 153600 (bytes)
<time> Maximum time in seconds to input data, range is 10-65535.

 

Example

AT+HTTPDATA=14,10000

DOWNLOAD

1234567890qwer

OK

 

 

 

 

F1308   AT+HTTPPOSTFILE     Send HTTP Request To HTTP(S) Server By File

You also can send HTTP request in a file via AT+HTTPPOSTFILE command.

The URL must be set by AT+HTTPPARA before executing AT+HTTPPOSTFILE command.

if set <send_header> to 0, you can customize any HTTP request in the file, module will send the file as HTTP header and body,

else if set to 1, modem will package a HTTP request itself, the file will be sent as HTTP body.

The parameter <path> can be used to set the file directory.

When modem has received response from HTTP server,

it will report the following URC: +HTTPPOSTFILE:<method>[,<httpstatuscode>[,<content_length>]]

Note: The parameter <method>, <send_header>, <path> can be omitted,

and the default value of <send_header> is 0,  the default <path> is 1 (/cache), default <method> is 1 (POST)

 

T) AT+HTTPPOSTFILE=?

+HTTPPOSTFILE: <filename>[,(1-3)[,(0-3)[,(0-1)]]]

 OK

W) AT+HTTPPOSTFILE=<filenam

e>[,<path>][,<method>][,<sen d_header>]

a) if parameter format is right and server connected successfully:

a.1       server response and content is not null

OK 

+HTTPPOSTFILE: <method>,<httpstatuscode>,<content_len>

a.2       server response but has no content

OK

 +HTTPPOSTFILE: <method>,<httpstatuscode>,0

 b) if parameter format is right but server connected unsuccessfully:

OK

 +HTTPPOSTFILE: <method>,<errcode>,0

 c) if parameter format is not right or any other error occurs:

ERROR

Maximum Response Time 120000ms

 

<filename> String type, filename, the max length is 64.unit:byte.
  <path>

The directory where the sent file saved. Numeric type, range is 1-3

1     F:/ (/cache)

2     D:/(sd card)

3     E:/ (/data/media/)

 <method>

HTTP method specification:

0     GET

1     POST

2     HEAD

3     DELETE

<httpstatuscode> Please refer to chapter 13.3.1
<content_length> Server response content
<errcode> Please refer to chapter13.3.2
 <send_header>

Send file as HTTP header and Body or Only as Body. Numeric type, the range is 0-1,

the default is 0.

0     Send file as HTTP header and body

1     Send file as Body

 

Example

AT+HTTPPOSTFILE=”baidu.txt”,3

OK

+HTTPPOSTFILE: 1,714,0

 

 

 

 

F1309   AT+HTTPREADFILE     Receive HTTP(S) response content  to a file

After executing AT+HTTPACTION or AT+HTTPOSTFILE command,  you can receive the HTTP server response content to a file via AT+HTTPREADFILE.

Before AT+HTTPREADFILE executed,

”+HTTPACTION:<mehtod>,<httpstautscode>,<content_len>” or ”+HTTPPOSTFILE: <httpstatuscode>,<content_len>” must be received.

The parameter <path> can be used to set the directory where to save the file. If omit the parameter, the file will be saved to /cache.

NOTE:

By setting <path> to 4, you can download CA files to directory /mssl_cert/, which is used for SSL verification,

 

T) AT+HTTPREADFILE=?

+HTTPREADTFILE: <filename>[,(1-4)]

 OK

W) AT+HTTPREADFILE=<filena

me>[,<path>]

a)if parameter format is right :

OK

 +HTTPREADFILE: <result>

b) if parameter format is right:

+HTTPREADFILE: <result>

OK

c) if failed:

+HTTPREADFILE: <result>

ERROR

d) if parameter format is not right or any other error occurs:

ERROR

 

<filename> String type, filename, the max length is 64 in byte.
 <path>

1     F:/   (/cache/)

2     D:/  (sd card)

3     E:/  (/data/media/)

4     /mssl_cert/     (this is for CA file downloading)

 

Example

AT+HTTPREADFILE=”baidu.txt”,3

OK

+HTTPREADFILE: 0

 

 

 

 

 

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