I want to know if there is a way to send via TCP IP by AT+CIPSEND command more than 1460 bytes, I trying to send to my server 2460 bytes, but give me error, I read in this app note, that is not possible to send more than 1460 bytes, I trying to search if there is another way to send this data to my server by a webserver that i made, I using a ESP32 and SIM800L, if I using the ESP32 with wifi, it made OK, and trying with AT commmands with sim800L, and give me the error, if I try with less than 1460 bytes, it made ok, I don't post any code, because, my question is more in what AT commands use for do this task, sorry foy my bad english
AT
OK
AT+CIURC=1
OK
AT+CREG?
+CREG: 0,1
OK
AT+CFUN=1
OK
AT+CMGF=1
OK
AT+CGMM
SIMCOM_SIM800L
OK
AT+CGMI
SIMCOM_Ltd
OK
AT+CMEE=2
OK
AT+CGACT?
+CGACT: 1,0
+CGACT: 2,0
+CGACT: 3,0
OK
AT+CIPSHUT
SHUT OK
AT+CGATT=1
OK
AT+CSTT="www.telcel.com"
OK
AT+CIICR
OK
AT+CIFSR
10.0.20.168
AT+CIPSTART="TCP","XXX.XX.XXX.XXX","xxxx"
OK
OK
CONNECT OK
AT+CIPSEND?
+CIPSEND: 1460
OK
AT+CIPSEND=2665
+CME ERROR: operation not allowed
CLOSED
Related
AT+HTTPINIT
OK
AT+HTTPPARA="URL","http://api.openw⸮athermap.org"
OK
AT+HTTPACTION=0
OK
+HTTPACTION: 0,713,0
AT+HTTPTERM
OK
---------------------------
AT+HTTPINIT
OK
AT+HTTPPARA="URL","http://api.openw⸮
ERROR
AT+HTTPACTION=0
+HTTPACTION: 0,702,0
OK
AT+HTTPTERM
OK
I coding in Arduino IDE for SIMCom A7670C, I follow "A76XX Series_HTTP(S)_Application Note_V1.03" datasheet and "76xx AT Command" datasheet.
I have a problem with HTTPACTION, error code is 713 and 702. How should I solve it?
I used ESP8266 connect with SIMCom.
one question regarding modem, Hayes escape sequence.
First to explain what is happening:
==> ATD 123\r\n
<== +CR: REL ASYNC\r\n
<== CONNECT 9600\r\n
After this moment I have online session. When I want to hangup, I am doing next.
< no data 1.5 seconds >
==> +++ (no \r\n)
**+++ is received on destination side (why?)**
<== OK
< no data 1.5 seconds >
==> ATH\r\n
<== OK
Destination side gets NO CARRIER.
The problem for me is that escape sequence is received as regular data on destination side.
Does anyone have an idea what should I do? Some modem configuration tweak?
Thanks!
I will answer my question.
I did not find the way to do that.
Instead, in order to hangup I use DTR (Data Terminal Ready) signal. After switching from active to inactive, the other side determines that as hangup (if modem is configured with AT&D2).
I'm trying to send a multiline sms from an application I am creating to my phone via telnet to a GSM modem. I would like the message to be output to my phone as shown below but cannot figure out how to add new lines within the message string so that the message is output to my phone as below. I cannot find much documentation on this either and the few character codes (\r\n) I tried either terminated the telnet command were they were displayed in my code or were showing in the SMS received on my phone.
Does anybody know what character code that would give me a new line without terminating the telnet command within the message string?
at*smsm2m= “441234567891
Pinging 192.168.0.31 with 32 bytes of data:
Reply from 192.168.0.31: bytes=32 time=3ms TTL=64<br>
Reply from 192.168.0.31: bytes=32 time=1ms TTL=64<br>
Reply from 192.168.0.31: bytes=32 time=1ms TTL=64<br>
Reply from 192.168.0.31: bytes=32 time=1ms TTL=64
Ping statistics for 192.168.0.31:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
The server side of Telnet is typically just a regular shell so you can do the same things you'd do for embedded newlines as if you were typing at a command line. Try this:
echo -e "this\nhas\nmultiple\nlines" | program
(you may need to look up flags for the echo command on the server if it's not a GNU machine)
I am a beginner in expect...I have written a small script which has to login to a router and execute few commands..
But somehow i am finding that even though when i have used send "admin show platform" THRICE, it is only working twice for me.. I only get the output of admin show platform twice.
Can anyone check the code and point me where actually i am screwing up the code..
Gsaxena#
Gsaxena#
Gsaxena# ./testTool
spawn /usr/bin/ksh
telnet 5.28.7.103
$ telnet 5.28.7.103
Trying 5.28.7.103...
Connected to 5.28.7.103.
Escape character is '^]'.
User Access Verification
Username:
Username: lab
Password:
RP/0/RP0/CPU0:Billorani#debug ospf ospf1 adj
Mon Oct 14 17:16:06.144 UTC
**RP/0/RP0/CPU0:Billorani#show platform**
Mon Oct 14 17:16:06.416 UTC
Node Type PLIM State Config State
------------- ----------------- ------------------ --------------- ---------------
x/x/x0 xxxxG N/A IN-RESET PWR,NSHUT,MON
**RP/0/RP0/CPU0:Billorani#show platform**
Mon Oct 14 17:16:06.416 UTC
Node Type PLIM State Config State
------------- ----------------- ------------------ --------------- ---------------
x/x/xxx0 xxxxG N/A IN-RESET PWR,NSHUT,MON
RP/0/RP0/CPU0:Billorani#
Gsaxena#
Gsaxena#
Gsaxena#
Gsaxena#
Gsaxena#
#!/usr/bin/expect
set timeout 30
set hostcut "Bil"
sleep 5
set timeout 5
spawn /usr/bin/ksh
send "telnet 5.8.7.103\r"
expect ".*\'\^\]\'\. *"
send "\r"
expect "Username\:"
send "lab\n"
expect "Password\: "
send "lab\n"
sleep 10
expect -re "RP\/.\/.*\/CPU.:$hostcut.*#"
send "debug ospf ospf1 adj\n"
expect -re "RP\/.\/.*\/CPU.:$hostcut.*#"
send "admin show platform\n"
expect -re "RP\/.\/.*\/CPU.:$hostcut.*#"
send "admin show platform\n"
expect -re "RP\/.\/.*\/CPU.:$hostcut.*#"
send "admin show platform\n"
I should really be placing this not in an actual answer but in a comment, since I do not have a final answer for you, but it seems comments can only be left by folks who have been around for some time (there's a minimum reputation before you can leave them).
Anyways, what I wanted to suggest was that you add exp_internal 1 somewhere near the start of your script. This will provide a ton of useful debugging information, and will most likely point at what is going on. Feel free to post it here if you need help with it.
I can't tell what is wrong from the information you posted... nothing seems obviously at fault. One thing I would do differently is instead of spawning a Korn shell process and then send a telnet commando to it, I would just spawn the telnet command directly (less code, less resources). But that is not what is bothering you, so never mind that.
I'm not familiar with the OS you're logging in to... is that Cisco IOS XR? I'm baffled by the fact that you issue an admin show platform command, yet only show platform shows in your stdout? Also, what's the deal with the dual asterisks (**) some prompts show, while others don't?
One last thing, which may seem dumb, but... can you manually access the device and issue those 4 exact commands, in that exact order?
Regards,
James
In your code
send "admin show platform\n"
Use "\r" instead of "\n"
I have a CGI script which takes about 1 minute to run. Right now Apache only returns results to the browser once the process has finished.
How can I make it show the output like it was run on a terminal?
Here is a example which demonstrates the problem.
I want to see the numbers 1 to 5 appear as they are printed.
I had to disable mod_deflate to have chunk mode working with apache
I did not find another way for my cgi to disable auto encoding to gzip.
There are several factors at play here. To eliminate a few issues, Apache and bash are not buffering any of the output. You can verify with this script:
#!/bin/sh
cat <<END
Content-Type: text/plain
END
for i in $(seq 1 10)
do
echo $i
sleep 1
done
Stick this somewhere that Apache is configured to execute CGI scripts, and test with netcat:
$ nc localhost 80
GET /cgi-bin/chunkit.cgi HTTP/1.1
Host: localhost
HTTP/1.1 200 OK
Date: Tue, 24 Aug 2010 23:26:24 GMT
Server: Apache/2.2.14 (Unix) mod_ssl/2.2.14 OpenSSL/0.9.7l DAV/2
Transfer-Encoding: chunked
Content-Type: text/plain
2
1
2
2
2
3
2
4
2
5
2
6
2
7
2
8
2
9
3
10
0
When I do this, I see in netcat each number appearing once per second, as intended.
Note that my version of Apache, at least, applies the chunked transfer encoding automatically, presumably because I didn't include a Content-Length; if you return the Transfer-Encoding: chunked header yourself, then you need to encode the output of your script in the chunked transfer encoding. That's pretty easy, even in a shell script:
chunk () {
printf '%x\r\n' "${#1}" # Length of the chunk in hex, CRLF
printf '%s\r\n' "$1" # Chunk itself, CRLF
}
chunk $'1\n' # This is a Bash-ism, since it's pretty hard to get a newline
chunk $'2\n' # character portably.
However, serve this to a browser, and you'll get varying results depending on the browser. On my system, Mac OS X 10.5.8, I see different behaviors between my browsers. In Safari, Chrome, and Firefox 4 beta, I don't start seeing output until I've sent somewhere around 1000 characters (I would guess 1024 including the headers, or something like that, but I haven't narrowed it down to the exact behavior). In Firefox 3.6, it starts displaying immediately.
I would guess that this delay is due to content type sniffing, or character encoding sniffing, which are in the process of being standardized. I have tried to see if I could get around the delay by specifying proper content types and character encodings, but without luck. You may have to send some padding data (which would be pretty easy to do invisibly if you use HTML instead of plain text), to get beyond that initial buffer.
Once you start streaming HTML instead of plain text, the structure of your HTML matters too. Some content can be displayed progressively, while some cannot. For instance, streaming down <div>s into the body, with no styling, works fine, and can display progressively as it arrives. If you try to open a <pre> tag, and just stream content into that, Webkit based browsers will wait until they see the close tag to try to lay that out, while Firefox is happy to display it progressively. I don't know all of the corner cases; you'll have to experiment to see what works for you.
Anyhow, I hope this helps you get started. Let me know if you have any more questions!