Is there any way I can view IP header and TCP header in fiddler. Do I need to write a script or is it even more simpler than this? I have just started using fiddler.
Fiddler is a HTTP proxy. So no you won't get info about the TCP or the IP layers of the stack.
To get that you can use one of the following tools.
Network Monitor - http://www.microsoft.com/downloads/en/details.aspx?FamilyID=983b941d-06cb-4658-b7f6-3088333d062f&displaylang=en
Wireshark - http://www.wireshark.org/
Related
I need to explore the traffic from one program.
The program makes something like a connection through the WebSockets.
Fiddler displays this:
Request Headers: CONNECT 144.***:443 HTTP/1.0
Response: HTTP/1.0 200 Connection Established
End empty body.
But the HTTP analyzer displays full information after that response, and that information continues flowing. Very likely like WebSockets (one connection and receive more answers).
And fiddler display zero traffic.
How can I explore such traffic through the fiddler?
A CONNECT call is always the first command a client sends if it uses a Proxy. Translated CONNECT just means: Please start a connection to the following server and that port. Through that connection the real HTP calls are then transmitted. Therefore CONNECT is not a real HTTP
request.
Fiddler does not show the content of CONNECT requests/responses to port 443 endpoints because those connections are HTTPS/TLS protected (hence the shown data would be useless). You need to enable HTTPS decryption and install the Fiddler root CA certificate into the client app/OS to see the decrypted content of those connections.
I have a local host webserver c++ code which runs on port 8080 on windows 10.
My first task is to test http requests and responses, and it's done properly with Postman.
But I have another task which is to capture those requests and responses via Wireshark(No other packet sniffing application).
Now, as far as I know it's no possible doing it unless one installs a loopback adapter, so I did it. But Wireshark still doesn't capture packets from and to port 8080.
Can sombedy please tell me what other configurations need to be done so it will be possible?
Probably your best option is to install and use Npcap instead of WinPcap. Be sure to install npcap's loopback adapter and capture on that interface and not on the Microsoft Loopback Adapter interface.
Another very good and simple option (if you're not required to use Wireshark) is to use RawCap instead of Wireshark.
Refer to the Wireshark Loopback capture setup wiki page for more details.
Breif Description of what I am trying to accomplish. So I am working with Crestrons Simpl+ software. My job is to create a module for a sound masking system called QT Pro. Now, QT Pro has an API where you can control it via HTTP. I need a way to establish a connection with the QT Pro via HTTP( I have everything I need, IP, Username, Password).
Whats the problem? I have just started working with this language. Unfortunately there isn't as much documentation as I would like, otherwise I wouldn't be here. I know I need to create a socket connection via TCP on port 80. I just don't know what I'm supposed to send through it.
Here is an example:
http://username:password#address/cmd.htm?cmd=setOneZoneData&ZN=Value&mD=Value
&mN=Value&auxA=Value&auxB=Value&autoR=Value
If I were to put this into the URL box, and fill it in correctly. then it would change the values that I specify. Am I supposed to send the entire thing? Or just after cmd.htm? Or is there some other way I'm supposed to send data? I'd like to stay away from the TCP/IP Module so I can keep this all within the same module.
Thanks.
You send
GET /cmd.htm?cmd=setOneZoneData&ZN=Value&mD=Value&mN=Value&auxA=Value&auxB=Value&autoR=Value HTTP/1.1
Host: address
Connection: close
(End with a couple of newlines.)
If you need to use HTTP basic authentication, then also include a header like
Authorization: Basic dXNlcm5hbWU6cGFzc3dvcmQ=
where the gibberish is the base64-encoded version of username:password.
But surely there is some mechanism for opening HTTP connections already there for you? Just blindly throwing out headers like this and hoping the response is what you expect is not robust, to say the least.
To see what is going on with your requests and responses, a great tool is netcat (or telnet, for that matter.)
Do nc address 80 to connect to server address on port 80, then paste your HTTP request:
GET /cmd.htm HTTP/1.1
Host: address
Authorization: Basic dXNlcm5hbWU6cGFzc3dvcmQ=
Connection: close
and see what comes back. SOMETHING should come back. (Remember to terminate with two newlines.)
To see what requests your browser is sending when you do something that works, you can listen like this: nc -l -p 8080.
Then direct your browser to localhost:8080 with the rest of the URL as before, and you'll see the request that was sent. (Then you can type back to see how the browser handles the response.)
Salam,
I want to set Oversip as a SIP Proxy, to handle TCP, TLS and WSS connections, and relay all traffic to Opensips SIP Server, converting all connections to UDP only . My questions are:
is it a good design to do so?
Opensips is not able to get the location of the , so I'm not able to route messages back, Opensips -> Oversip -> Client. any help or tutorial (I googled it and can't find any)?
Thanks in advance
It is bad design, becuase opensips already can do TCP and TLS.
But you you insist you need that, you can add sip header with needed info when callign opensips/read it on opensips.
Problem statement:
Suppose a parent server is hosted on a machine IP: 1.1.1.1 and that server some time communicates with three different servers say A (1.1.1.2), B (1.1.1.3), C (1.1.1.4). Those servers may be database servers or any other servers.
Now from your browser you can send a http request to 1.1.1.1/somePage.htm, as a result some TCP packet will go to the server 1.1.1.1, and 1.1.1.1 can send and receive some TCP packets from A,B,C as well.
Aim is to get the information of all TCP packets from the browser machine, without installing any agent software in any servers.
One solution is we can write a code at the 1.1.1.1 server machine that will filter all the TCP packets with respect to respective IPs. But I don’t want that solution.
Is there any way to solve this issue? Is it possible to introduce new protocol for this? But server codes can’t be modified.
Does "any agent software" includes something like Wireshark? Usually the way to look at all datagrams received is by using a sniffer like Wireshark or you can use tcpdump in Linux servers.
You can also use Netfilter to handle received packets in the server an take certain actions on them.
If all the above is included in what you don't want to do the only alternative I see is to add another server in the middle between the browser and the web server (or between the server and a load balancer if you have a load balancer) that acts only as a router or bridge. In that machine you can inspect and filter TCP segments with all the available tools.