One HTTP request, two responses?
I'm experimenting with my Samsung wireless speaker. I've been using Wireshark to examine and reverse engineer its API. One of the API calls I make causes strange behaviour where it seems one HTTP request returns two HTTP responses.
curl -v http://192.168.1.165:55001/UIC?cmd=%3Cname%3EGetMainInfo%3C/name%3E
What's frustrating, is that it's the second response that has the payload I'm after. How can I get to it?
Curl output
* Trying 192.168.1.165...
* TCP_NODELAY set
* Connected to 192.168.1.165 (192.168.1.165) port 55001 (#0)
> GET /UIC?cmd=%3Cname%3EGetMainInfo%3C/name%3E HTTP/1.1
> Host: 192.168.1.165:55001
> User-Agent: curl/7.58.0
> Accept: */*
>
< HTTP/1.1 200 OK
< Date: Fri, 02 Jan 1970 09:31:25 GMT
< Server: Samsung/1.0
< Content-Type: text/html
< Content-Length: 215
< Connection: close
< Last-Modified: Fri, 02 Jan 1970 09:31:25 GMT
<
* Closing connection 0
<?xml version="1.0" encoding="UTF-8"?><UIC><method>RequestDeviceInfo</method><version>1.0</version><speakerip>192.168.1.165</speakerip><user_identifier>public</user_identifier><response result="ok"></response></UIC>
Wireshark HTTP response 1/2
<?xml version="1.0" encoding="UTF-8"?><UIC><method>RequestDeviceInfo</method><version>1.0</version><speakerip>192.168.1.165</speakerip><user_identifier>public</user_identifier><response result="ok"></response></UIC>
Wireshark HTTP response 2/2
<?xml version="1.0" encoding="UTF-8"?><UIC><method>MainInfo</method><version>1.0</version><speakerip>192.168.1.165</speakerip><user_identifier></user_identifier><response result="ok"><party>off</party><partymain></partymain><grouptype>N</grouptype><groupmainip>0.0.0.0</groupmainip><groupmainmacaddr>00:00:00:00:00:00</groupmainmacaddr><spkmacaddr>xx:xx:xx:xx:xx:xx</spkmacaddr><spkmodelname>SPK-WAM3500</spkmodelname><groupmode>none</groupmode><channeltype>invalid</channeltype><channelvolume>0</channelvolume><multichinfo>on</multichinfo><groupspknum>1</groupspknum><dfsstatus>dfsoff</dfsstatus><protocolver>2.3</protocolver><btmacaddr>xx:xx:xx:xx:xx:xx</btmacaddr></response></UIC>
netcat
Netcat did the job it seems:
$ nc 192.168.1.165 55001
GET /UIC?cmd=%3Cname%3EGetMainInfo%3C/name%3E HTTP/1.1
Host: 192.168.1.165
HTTP/1.1 200 OK
Date: Fri, 02 Jan 1970 10:53:13 GMT
Server: Samsung/1.0
Content-Type: text/html
Content-Length: 215
Connection: close
Last-Modified: Fri, 02 Jan 1970 10:53:13 GMT
<?xml version="1.0" encoding="UTF-8"?><UIC><method>RequestDeviceInfo</method><version>1.0</version><speakerip>192.168.1.165</speakerip><user_identifier>public</user_identifier><response result="ok"></response></UIC>HTTP/1.1 200 OK
Date: Fri, 02 Jan 1970 10:53:13 GMT
Server: Samsung/1.0
Content-Type: text/html
Content-Length: 684
Connection: close
Last-Modified: Fri, 02 Jan 1970 10:53:13 GMT
<?xml version="1.0" encoding="UTF-8"?><UIC><method>MainInfo</method><version>1.0</version><speakerip>192.168.1.165</speakerip><user_identifier></user_identifier><response result="ok"><party>off</party><partymain></partymain><grouptype>N</grouptype><groupmainip>0.0.0.0</groupmainip><groupmainmacaddr>00:00:00:00:00:00</groupmainmacaddr><spkmacaddr>xx:xx:xx:xx:xx:xx</spkmacaddr><spkmodelname>SPK-WAM3500</spkmodelname><groupmode>none</groupmode><channeltype>invalid</channeltype><channelvolume>0</channelvolume><multichinfo>on</multichinfo><groupspknum>1</groupspknum><dfsstatus>dfsoff</dfsstatus><protocolver>2.3</protocolver><btmacaddr>xx:xx:xx:xx:xx:xx</btmacaddr></response></UIC>
networking http wireshark
asked Jan 9 at 10:56
beklipbeklip
11
|
show 1 more comment
I'm experimenting with my Samsung wireless speaker. I've been using Wireshark to examine and reverse engineer its API. One of the API calls I make causes strange behaviour where it seems one HTTP request returns two HTTP responses.
curl -v http://192.168.1.165:55001/UIC?cmd=%3Cname%3EGetMainInfo%3C/name%3E
What's frustrating, is that it's the second response that has the payload I'm after. How can I get to it?
Curl output
* Trying 192.168.1.165...
* TCP_NODELAY set
* Connected to 192.168.1.165 (192.168.1.165) port 55001 (#0)
> GET /UIC?cmd=%3Cname%3EGetMainInfo%3C/name%3E HTTP/1.1
> Host: 192.168.1.165:55001
> User-Agent: curl/7.58.0
> Accept: */*
>
< HTTP/1.1 200 OK
< Date: Fri, 02 Jan 1970 09:31:25 GMT
< Server: Samsung/1.0
< Content-Type: text/html
< Content-Length: 215
< Connection: close
< Last-Modified: Fri, 02 Jan 1970 09:31:25 GMT
<
* Closing connection 0
<?xml version="1.0" encoding="UTF-8"?><UIC><method>RequestDeviceInfo</method><version>1.0</version><speakerip>192.168.1.165</speakerip><user_identifier>public</user_identifier><response result="ok"></response></UIC>
Wireshark HTTP response 1/2
<?xml version="1.0" encoding="UTF-8"?><UIC><method>RequestDeviceInfo</method><version>1.0</version><speakerip>192.168.1.165</speakerip><user_identifier>public</user_identifier><response result="ok"></response></UIC>
Wireshark HTTP response 2/2
<?xml version="1.0" encoding="UTF-8"?><UIC><method>MainInfo</method><version>1.0</version><speakerip>192.168.1.165</speakerip><user_identifier></user_identifier><response result="ok"><party>off</party><partymain></partymain><grouptype>N</grouptype><groupmainip>0.0.0.0</groupmainip><groupmainmacaddr>00:00:00:00:00:00</groupmainmacaddr><spkmacaddr>xx:xx:xx:xx:xx:xx</spkmacaddr><spkmodelname>SPK-WAM3500</spkmodelname><groupmode>none</groupmode><channeltype>invalid</channeltype><channelvolume>0</channelvolume><multichinfo>on</multichinfo><groupspknum>1</groupspknum><dfsstatus>dfsoff</dfsstatus><protocolver>2.3</protocolver><btmacaddr>xx:xx:xx:xx:xx:xx</btmacaddr></response></UIC>
netcat
Netcat did the job it seems:
$ nc 192.168.1.165 55001
GET /UIC?cmd=%3Cname%3EGetMainInfo%3C/name%3E HTTP/1.1
Host: 192.168.1.165
HTTP/1.1 200 OK
Date: Fri, 02 Jan 1970 10:53:13 GMT
Server: Samsung/1.0
Content-Type: text/html
Content-Length: 215
Connection: close
Last-Modified: Fri, 02 Jan 1970 10:53:13 GMT
<?xml version="1.0" encoding="UTF-8"?><UIC><method>RequestDeviceInfo</method><version>1.0</version><speakerip>192.168.1.165</speakerip><user_identifier>public</user_identifier><response result="ok"></response></UIC>HTTP/1.1 200 OK
Date: Fri, 02 Jan 1970 10:53:13 GMT
Server: Samsung/1.0
Content-Type: text/html
Content-Length: 684
Connection: close
Last-Modified: Fri, 02 Jan 1970 10:53:13 GMT
<?xml version="1.0" encoding="UTF-8"?><UIC><method>MainInfo</method><version>1.0</version><speakerip>192.168.1.165</speakerip><user_identifier></user_identifier><response result="ok"><party>off</party><partymain></partymain><grouptype>N</grouptype><groupmainip>0.0.0.0</groupmainip><groupmainmacaddr>00:00:00:00:00:00</groupmainmacaddr><spkmacaddr>xx:xx:xx:xx:xx:xx</spkmacaddr><spkmodelname>SPK-WAM3500</spkmodelname><groupmode>none</groupmode><channeltype>invalid</channeltype><channelvolume>0</channelvolume><multichinfo>on</multichinfo><groupspknum>1</groupspknum><dfsstatus>dfsoff</dfsstatus><protocolver>2.3</protocolver><btmacaddr>xx:xx:xx:xx:xx:xx</btmacaddr></response></UIC>
networking http wireshark
asked Jan 9 at 10:56
beklipbeklip
11
You can get an HTTP response in multiple packets. What is the output of your curl request?
– slhck
Jan 9 at 11:09
@slhck added curl output, thanks for looking
– beklip
Jan 9 at 14:51
@Biswapriyo added both payloads, thanks for looking
– beklip
Jan 9 at 14:51
What happens if youecho 'GET /UIC?cmd=%3Cname%3EGetMainInfo%3C/name%3E HTTP/1.1' | socat - TCP:192.168.1.165:55001(or variants with more headers, ortelnetif you don't havesocat)? The point is to avoidcurlreacting on the wrong length in the first response together withConnection: close.
– dirkt
Jan 9 at 15:23
@dirkt I used netcat, which seemed to do the job
– beklip
Jan 9 at 15:53
|
show 1 more comment
I'm experimenting with my Samsung wireless speaker. I've been using Wireshark to examine and reverse engineer its API. One of the API calls I make causes strange behaviour where it seems one HTTP request returns two HTTP responses.
curl -v http://192.168.1.165:55001/UIC?cmd=%3Cname%3EGetMainInfo%3C/name%3E
What's frustrating, is that it's the second response that has the payload I'm after. How can I get to it?
Curl output
* Trying 192.168.1.165...
* TCP_NODELAY set
* Connected to 192.168.1.165 (192.168.1.165) port 55001 (#0)
> GET /UIC?cmd=%3Cname%3EGetMainInfo%3C/name%3E HTTP/1.1
> Host: 192.168.1.165:55001
> User-Agent: curl/7.58.0
> Accept: */*
>
< HTTP/1.1 200 OK
< Date: Fri, 02 Jan 1970 09:31:25 GMT
< Server: Samsung/1.0
< Content-Type: text/html
< Content-Length: 215
< Connection: close
< Last-Modified: Fri, 02 Jan 1970 09:31:25 GMT
<
* Closing connection 0
<?xml version="1.0" encoding="UTF-8"?><UIC><method>RequestDeviceInfo</method><version>1.0</version><speakerip>192.168.1.165</speakerip><user_identifier>public</user_identifier><response result="ok"></response></UIC>
Wireshark HTTP response 1/2
<?xml version="1.0" encoding="UTF-8"?><UIC><method>RequestDeviceInfo</method><version>1.0</version><speakerip>192.168.1.165</speakerip><user_identifier>public</user_identifier><response result="ok"></response></UIC>
Wireshark HTTP response 2/2
<?xml version="1.0" encoding="UTF-8"?><UIC><method>MainInfo</method><version>1.0</version><speakerip>192.168.1.165</speakerip><user_identifier></user_identifier><response result="ok"><party>off</party><partymain></partymain><grouptype>N</grouptype><groupmainip>0.0.0.0</groupmainip><groupmainmacaddr>00:00:00:00:00:00</groupmainmacaddr><spkmacaddr>xx:xx:xx:xx:xx:xx</spkmacaddr><spkmodelname>SPK-WAM3500</spkmodelname><groupmode>none</groupmode><channeltype>invalid</channeltype><channelvolume>0</channelvolume><multichinfo>on</multichinfo><groupspknum>1</groupspknum><dfsstatus>dfsoff</dfsstatus><protocolver>2.3</protocolver><btmacaddr>xx:xx:xx:xx:xx:xx</btmacaddr></response></UIC>
netcat
Netcat did the job it seems:
$ nc 192.168.1.165 55001
GET /UIC?cmd=%3Cname%3EGetMainInfo%3C/name%3E HTTP/1.1
Host: 192.168.1.165
HTTP/1.1 200 OK
Date: Fri, 02 Jan 1970 10:53:13 GMT
Server: Samsung/1.0
Content-Type: text/html
Content-Length: 215
Connection: close
Last-Modified: Fri, 02 Jan 1970 10:53:13 GMT
<?xml version="1.0" encoding="UTF-8"?><UIC><method>RequestDeviceInfo</method><version>1.0</version><speakerip>192.168.1.165</speakerip><user_identifier>public</user_identifier><response result="ok"></response></UIC>HTTP/1.1 200 OK
Date: Fri, 02 Jan 1970 10:53:13 GMT
Server: Samsung/1.0
Content-Type: text/html
Content-Length: 684
Connection: close
Last-Modified: Fri, 02 Jan 1970 10:53:13 GMT
<?xml version="1.0" encoding="UTF-8"?><UIC><method>MainInfo</method><version>1.0</version><speakerip>192.168.1.165</speakerip><user_identifier></user_identifier><response result="ok"><party>off</party><partymain></partymain><grouptype>N</grouptype><groupmainip>0.0.0.0</groupmainip><groupmainmacaddr>00:00:00:00:00:00</groupmainmacaddr><spkmacaddr>xx:xx:xx:xx:xx:xx</spkmacaddr><spkmodelname>SPK-WAM3500</spkmodelname><groupmode>none</groupmode><channeltype>invalid</channeltype><channelvolume>0</channelvolume><multichinfo>on</multichinfo><groupspknum>1</groupspknum><dfsstatus>dfsoff</dfsstatus><protocolver>2.3</protocolver><btmacaddr>xx:xx:xx:xx:xx:xx</btmacaddr></response></UIC>
networking http wireshark
asked Jan 9 at 10:56
beklipbeklip
11
I'm experimenting with my Samsung wireless speaker. I've been using Wireshark to examine and reverse engineer its API. One of the API calls I make causes strange behaviour where it seems one HTTP request returns two HTTP responses.
curl -v http://192.168.1.165:55001/UIC?cmd=%3Cname%3EGetMainInfo%3C/name%3E
What's frustrating, is that it's the second response that has the payload I'm after. How can I get to it?
Curl output
* Trying 192.168.1.165...
* TCP_NODELAY set
* Connected to 192.168.1.165 (192.168.1.165) port 55001 (#0)
> GET /UIC?cmd=%3Cname%3EGetMainInfo%3C/name%3E HTTP/1.1
> Host: 192.168.1.165:55001
> User-Agent: curl/7.58.0
> Accept: */*
>
< HTTP/1.1 200 OK
< Date: Fri, 02 Jan 1970 09:31:25 GMT
< Server: Samsung/1.0
< Content-Type: text/html
< Content-Length: 215
< Connection: close
< Last-Modified: Fri, 02 Jan 1970 09:31:25 GMT
<
* Closing connection 0
<?xml version="1.0" encoding="UTF-8"?><UIC><method>RequestDeviceInfo</method><version>1.0</version><speakerip>192.168.1.165</speakerip><user_identifier>public</user_identifier><response result="ok"></response></UIC>
Wireshark HTTP response 1/2
<?xml version="1.0" encoding="UTF-8"?><UIC><method>RequestDeviceInfo</method><version>1.0</version><speakerip>192.168.1.165</speakerip><user_identifier>public</user_identifier><response result="ok"></response></UIC>
Wireshark HTTP response 2/2
<?xml version="1.0" encoding="UTF-8"?><UIC><method>MainInfo</method><version>1.0</version><speakerip>192.168.1.165</speakerip><user_identifier></user_identifier><response result="ok"><party>off</party><partymain></partymain><grouptype>N</grouptype><groupmainip>0.0.0.0</groupmainip><groupmainmacaddr>00:00:00:00:00:00</groupmainmacaddr><spkmacaddr>xx:xx:xx:xx:xx:xx</spkmacaddr><spkmodelname>SPK-WAM3500</spkmodelname><groupmode>none</groupmode><channeltype>invalid</channeltype><channelvolume>0</channelvolume><multichinfo>on</multichinfo><groupspknum>1</groupspknum><dfsstatus>dfsoff</dfsstatus><protocolver>2.3</protocolver><btmacaddr>xx:xx:xx:xx:xx:xx</btmacaddr></response></UIC>
netcat
Netcat did the job it seems:
$ nc 192.168.1.165 55001
GET /UIC?cmd=%3Cname%3EGetMainInfo%3C/name%3E HTTP/1.1
Host: 192.168.1.165
HTTP/1.1 200 OK
Date: Fri, 02 Jan 1970 10:53:13 GMT
Server: Samsung/1.0
Content-Type: text/html
Content-Length: 215
Connection: close
Last-Modified: Fri, 02 Jan 1970 10:53:13 GMT
<?xml version="1.0" encoding="UTF-8"?><UIC><method>RequestDeviceInfo</method><version>1.0</version><speakerip>192.168.1.165</speakerip><user_identifier>public</user_identifier><response result="ok"></response></UIC>HTTP/1.1 200 OK
Date: Fri, 02 Jan 1970 10:53:13 GMT
Server: Samsung/1.0
Content-Type: text/html
Content-Length: 684
Connection: close
Last-Modified: Fri, 02 Jan 1970 10:53:13 GMT
<?xml version="1.0" encoding="UTF-8"?><UIC><method>MainInfo</method><version>1.0</version><speakerip>192.168.1.165</speakerip><user_identifier></user_identifier><response result="ok"><party>off</party><partymain></partymain><grouptype>N</grouptype><groupmainip>0.0.0.0</groupmainip><groupmainmacaddr>00:00:00:00:00:00</groupmainmacaddr><spkmacaddr>xx:xx:xx:xx:xx:xx</spkmacaddr><spkmodelname>SPK-WAM3500</spkmodelname><groupmode>none</groupmode><channeltype>invalid</channeltype><channelvolume>0</channelvolume><multichinfo>on</multichinfo><groupspknum>1</groupspknum><dfsstatus>dfsoff</dfsstatus><protocolver>2.3</protocolver><btmacaddr>xx:xx:xx:xx:xx:xx</btmacaddr></response></UIC>
networking http wireshark
networking http wireshark
asked Jan 9 at 10:56
beklipbeklip
11
asked Jan 9 at 10:56
beklipbeklip
11
edited Jan 9 at 16:09
beklip
asked Jan 9 at 10:56
beklipbeklip
11
asked Jan 9 at 10:56
beklipbeklip
11
asked Jan 9 at 10:56
beklipbeklip
11
11
You can get an HTTP response in multiple packets. What is the output of your curl request?
– slhck
Jan 9 at 11:09
@slhck added curl output, thanks for looking
– beklip
Jan 9 at 14:51
@Biswapriyo added both payloads, thanks for looking
– beklip
Jan 9 at 14:51
What happens if youecho 'GET /UIC?cmd=%3Cname%3EGetMainInfo%3C/name%3E HTTP/1.1' | socat - TCP:192.168.1.165:55001(or variants with more headers, ortelnetif you don't havesocat)? The point is to avoidcurlreacting on the wrong length in the first response together withConnection: close.
– dirkt
Jan 9 at 15:23
@dirkt I used netcat, which seemed to do the job
– beklip
Jan 9 at 15:53
|
show 1 more comment
You can get an HTTP response in multiple packets. What is the output of your curl request?
– slhck
Jan 9 at 11:09
@slhck added curl output, thanks for looking
– beklip
Jan 9 at 14:51
@Biswapriyo added both payloads, thanks for looking
– beklip
Jan 9 at 14:51
What happens if youecho 'GET /UIC?cmd=%3Cname%3EGetMainInfo%3C/name%3E HTTP/1.1' | socat - TCP:192.168.1.165:55001(or variants with more headers, ortelnetif you don't havesocat)? The point is to avoidcurlreacting on the wrong length in the first response together withConnection: close.
– dirkt
Jan 9 at 15:23
@dirkt I used netcat, which seemed to do the job
– beklip
Jan 9 at 15:53
You can get an HTTP response in multiple packets. What is the output of your curl request?
– slhck
Jan 9 at 11:09
You can get an HTTP response in multiple packets. What is the output of your curl request?
– slhck
Jan 9 at 11:09
@slhck added curl output, thanks for looking
– beklip
Jan 9 at 14:51
@slhck added curl output, thanks for looking
– beklip
Jan 9 at 14:51
@Biswapriyo added both payloads, thanks for looking
– beklip
Jan 9 at 14:51
@Biswapriyo added both payloads, thanks for looking
– beklip
Jan 9 at 14:51
What happens if you
echo 'GET /UIC?cmd=%3Cname%3EGetMainInfo%3C/name%3E HTTP/1.1' | socat - TCP:192.168.1.165:55001 (or variants with more headers, or telnet if you don't have socat)? The point is to avoid curl reacting on the wrong length in the first response together with Connection: close.– dirkt
Jan 9 at 15:23
What happens if you
echo 'GET /UIC?cmd=%3Cname%3EGetMainInfo%3C/name%3E HTTP/1.1' | socat - TCP:192.168.1.165:55001 (or variants with more headers, or telnet if you don't have socat)? The point is to avoid curl reacting on the wrong length in the first response together with Connection: close.– dirkt
Jan 9 at 15:23
@dirkt I used netcat, which seemed to do the job
– beklip
Jan 9 at 15:53
@dirkt I used netcat, which seemed to do the job
– beklip
Jan 9 at 15:53
|
show 1 more comment
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You can get an HTTP response in multiple packets. What is the output of your curl request?
– slhck
Jan 9 at 11:09
@slhck added curl output, thanks for looking
– beklip
Jan 9 at 14:51
@Biswapriyo added both payloads, thanks for looking
– beklip
Jan 9 at 14:51
What happens if you
echo 'GET /UIC?cmd=%3Cname%3EGetMainInfo%3C/name%3E HTTP/1.1' | socat - TCP:192.168.1.165:55001(or variants with more headers, ortelnetif you don't havesocat)? The point is to avoidcurlreacting on the wrong length in the first response together withConnection: close.– dirkt
Jan 9 at 15:23
@dirkt I used netcat, which seemed to do the job
– beklip
Jan 9 at 15:53