85664f1e31
This diff contains significant improvements over the previous implementation of the torsf experiment. We add support for configuring different rendezvous methods after the convo at https://github.com/ooni/probe/issues/2004. In doing that, I've tried to use a terminology that is consistent with the names being actually used by tor developers. In terms of what to do next, this diff basically instruments torsf to always rendezvous using domain fronting. Yet, it's also possible to change the rendezvous method from the command line, when using miniooni, which allows to experiment a bit more. In the same vein, by default we use a persistent tor datadir, but it's also possible to use a temporary datadir using the cmdline. Here's how a generic invocation of `torsf` looks like: ```bash ./miniooni -O DisablePersistentDatadir=true \ -O RendezvousMethod=amp \ -O DisableProgress=true \ torsf ``` (The default is `DisablePersistentDatadir=false` and `RendezvousMethod=domain_fronting`.) With this implementation, we can start measuring whether snowflake and tor together can boostrap, which seems the most important thing to focus on at the beginning. Understanding why the bootstrap most often does not converge with a temporary datadir on Android devices remains instead an open problem for now. (I'll also update the relevant issues or create new issues after commit this.) We also address some methodology improvements that were proposed in https://github.com/ooni/probe/issues/1686. Namely: 1. we record the tor version; 2. we include the bootstrap percentage by reading the logs; 3. we set the anomaly key correctly; 4. we measure the bytes send and received (by `tor` not by `snowflake`, since doing it for snowflake seems more complex at this stage). What remains to be done is the possibility of including Snowflake events into the measurement, which is not possible until the new improvements at common/event in snowflake.git are included into a tagged version of snowflake itself. (I'll make sure to mention this aspect to @cohosh in https://github.com/ooni/probe/issues/2004.) |
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| .. | ||
| archival | ||
| dialer | ||
| httptransport | ||
| quicdialer | ||
| resolver | ||
| tlsdialer | ||
| trace | ||
| fake_test.go | ||
| integration_test.go | ||
| netx_internal_test.go | ||
| netx_test.go | ||
| netx.go | ||
| README.md | ||
Package github.com/ooni/probe-engine/netx
OONI extensions to the net and net/http packages. This code is
used by ooni/probe-engine as a low level library to collect
network, DNS, and HTTP events occurring during OONI measurements.
This library contains replacements for commonly used standard library interfaces that facilitate seamless network measurements. By using such replacements, as opposed to standard library interfaces, we can:
- save the timing of HTTP events (e.g. received response headers)
- save the timing and result of every Connect, Read, Write, Close operation
- save the timing and result of the TLS handshake (including certificates)
By default, this library uses the system resolver. In addition, it is possible to configure alternative DNS transports and remote servers. We support DNS over UDP, DNS over TCP, DNS over TLS (DoT), and DNS over HTTPS (DoH). When using an alternative transport, we are also able to intercept and save DNS messages, as well as any other interaction with the remote server (e.g., the result of the TLS handshake for DoT and DoH).
This package is a fork of github.com/ooni/netx.