Caido

Capturing and Inspecting Web Traffic ​

Intercept ​

For advanced documentation on this topic - click here.

Intercept allows you to capture requests as well as responses for inspection/modification and forward or drop them arbitrarily. Requests are shown on the left and responses are shown on the right.

Intercept tab.
  1. Select the Intercept tab from the left-hand menu within the Caido window.
  2. Clicking this button will toggle between Queuing (intercept traffic) and Forwarding (forward traffic).
  3. Click Requests, Responses or both to specify what Queuing is applied to. Intercept on is signified by || and intercept off is signified by >>.
  4. The Drop and Forward buttons will drop or forward requests/responses respecively.

HTTP History ​

For advanced documentation on this topic - click here.

The HTTP History tab lists all the traffic that Caido has proxied.

Intercept tab.
  1. Select the HTTP History tab from the left-hand menu within the Caido window.
  2. All the proxied requests will appear in this pane. Select them arbitrarily.
  3. Search/filter for requests or responses within Caido's history by entering an HTTPQL query in this input bar.
  4. Clicking the Advanced button will present checkbox options to further filter what is displayed in the history (filter by response status code(s) and custom presets).
  5. Clicking the Column preferences cog wheel icon will present checkbox options that you can select/deselect to customize the information provided about each request.

WS History ​

For advanced documentation on this topic - click here.

The WS History tab lists all of the WebSocket stream traffic that Caido has proxied.

WS History tab.
  1. Select the WS History tab from the left-hand menu within the Caido window.
  2. All the proxied WebSocket streams will appear in this pane. Select them arbitrarily.
  3. Select a message within the selected stream in this pane.
  4. The contents of the selected message are presented in this pane.

TIP

You can click on any of the column names above the request/response/stream list pane to sort in ascending/descending/alphabetical/numerical order, by extension/presence/absence/size, or by time waited/time sent depending on the tab/category selected.

Forwarding and Modifying Requests Repeatedly ​

Once you have familiarized yourself with capturing and inspecting web traffic - basic modification steps using Replay are available here: