fix: make netsim run from examples (#2959)

## Description

Moves our netsim tests to run from an example and only test the lib part
of the code, not the full CLI & blobs.

Things left to do:
- [x] rename the example from `new` to anything that makes more sense
`netsim` runs it under `iroh-transfer`
- [x] clean up the example code
- [x] add the option to provide either a relay config or pass in at
least the relay url as an argument
- [x] continue the CI adjustment and move all invocations of the netsim
runner to run from `iroh_v2` and `integration_v2` sims (we want a less
abrupt netsim switchover)
- [x] convert the remaining sims in `chuck/netsim/sims` to the new
format
- [ ] after some time flip back the CI invocations to be regular `iroh`
and `integration` sims which includes doing the same on `netsim` and
removing the old ones

## Breaking Changes

<!-- Optional, if there are any breaking changes document them,
including how to migrate older code. -->

## Notes & open questions

<!-- Any notes, remarks or open questions you have to make about the PR.
-->

## Change checklist

- [ ] Self-review.
- [ ] Documentation updates following the [style
guide](https://rust-lang.github.io/rfcs/1574-more-api-documentation-conventions.html#appendix-a-full-conventions-text),
if relevant.
- [ ] Tests if relevant.
- [ ] All breaking changes documented.

.github/workflows/ci.yml

@@ -246,13 +246,13 @@ jobs:
       # TODO: We have a bunch of platform-dependent code so should
       #    probably run this job on the full platform matrix
       - name: clippy check (all features)
-        run: cargo clippy --workspace --all-features --all-targets --bins --tests --benches
+        run: cargo clippy --workspace --all-features --all-targets --lib --bins --tests --benches --examples
 
       - name: clippy check (no features)
-        run: cargo clippy --workspace --no-default-features --lib --bins --tests
+        run: cargo clippy --workspace --no-default-features --all-targets --lib --bins --tests --benches --examples
 
       - name: clippy check (default features)
-        run: cargo clippy --workspace --all-targets
+        run: cargo clippy --workspace --all-targets --lib --bins --tests --benches --examples
 
   msrv:
     if: "github.event_name != 'pull_request' || ! contains(github.event.pull_request.labels.*.name, 'flaky-test')"
@@ -295,7 +295,7 @@ jobs:
       branch: ${{ github.ref }}
       max_workers: 4
       netsim_branch: "main"
-      sim_paths: "sims/iroh/iroh.json,sims/integration"
+      sim_paths: "sims/iroh_v2/iroh.json,sims/integration_v2"
       pr_number: ${{ github.event.pull_request.number || '' }}
 
   codespell:

.github/workflows/netsim.yml

@@ -39,7 +39,7 @@ jobs:
       branch: "main"
       max_workers: 1
       netsim_branch: "main"
-      sim_paths: "sims/iroh,sims/integration"
+      sim_paths: "sims/iroh_v2,sims/integration_v2"
       pr_number: ""
       publish_metrics: true
       build_profile: "optimized-release"
@@ -53,7 +53,7 @@ jobs:
       branch: ${{inputs.branch}}
       max_workers: 1
       netsim_branch: ${{inputs.netsim_branch}}
-      sim_paths: "sims/iroh"
+      sim_paths: "sims/iroh_v2"
       pr_number: ${{inputs.pr_number}}
       publish_metrics: false
       build_profile: "optimized-release"

.github/workflows/netsim_runner.yaml

@@ -133,7 +133,7 @@ jobs:
     - name: Copy binaries to right location
       run: |
         cp target/${{inputs.build_profile}}/examples/* ../chuck/netsim/bins/
-        cp target/${{inputs.build_profile}}/iroh ../chuck/netsim/bins/iroh
+        cp target/${{inputs.build_profile}}/examples/transfer ../chuck/netsim/bins/iroh-transfer
         cp target/${{inputs.build_profile}}/iroh-relay ../chuck/netsim/bins/iroh-relay
         cp ../chuck/target/release/chuck ../chuck/netsim/bins/chuck
 

iroh-net/bench/src/lib.rs

@@ -21,7 +21,7 @@ pub mod s2n;
 pub mod stats;
 
 #[derive(Parser, Debug, Clone, Copy)]
-#[clap(name = "bulk")]
+#[clap(name = "iroh-net-bench")]
 pub enum Commands {
     Iroh(Opt),
     #[cfg(not(any(target_os = "freebsd", target_os = "openbsd", target_os = "netbsd")))]

iroh/Cargo.toml

@@ -62,6 +62,7 @@ ref-cast = "1.0.23"
 # Examples
 clap = { version = "4", features = ["derive"], optional = true }
 indicatif = { version = "0.17", features = ["tokio"], optional = true }
+parse-size = { version = "=1.0.0", optional = true } # pinned version to avoid bumping msrv to 1.81
 
 # Documentation tests
 url = { version = "2.5.0", features = ["serde"] }
@@ -74,7 +75,7 @@ test = []
 discovery-pkarr-dht = ["iroh-net/discovery-pkarr-dht"]
 test-utils = ["iroh-net/test-utils"]
 
-examples = ["dep:clap", "dep:indicatif"]
+examples = ["dep:clap", "dep:indicatif", "dep:parse-size"]
 
 [dev-dependencies]
 anyhow = { version = "1" }
@@ -101,3 +102,7 @@ rustdoc-args = ["--cfg", "iroh_docsrs"]
 [[example]]
 name = "rpc"
 required-features = ["examples"]
+
+[[example]]
+name = "transfer"
+required-features = ["examples"]