feat: simple iroh (#2968)

## Description

This is the nexst step to transforming the `iroh` crate, it now is
purely a reexport crate of the fundamental building blocks

- `iroh-base`
- `iroh-net`
- `iroh-router`

## Breaking Changes

- removed
  - `iroh::node`
  - `iroh::metrics`
  - `iroh::util`
- `load_secret_key` moved to `iroh_node_utils` to preserve it

## Notes & open questions



## 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.

iroh-net/Cargo.toml

@@ -172,9 +172,6 @@ iroh-relay = { version = "0.28", path = "../iroh-relay", features = ["test-utils
 name = "key"
 harness = false
 
-[build-dependencies]
-duct = "0.13.6"
-
 [features]
 default = ["metrics", "discovery-pkarr-dht"]
 metrics = ["iroh-metrics/metrics"]

iroh/src/util/fs.rs → iroh-node-util/src/fs.rs

@@ -1,4 +1,5 @@
 //! Utilities for filesystem operations.
+
 use std::path::PathBuf;
 
 use anyhow::Context;

iroh-node-util/src/lib.rs

@@ -12,6 +12,8 @@ pub mod config;
 pub mod logging;
 pub mod rpc;
 
+pub mod fs;
+
 use std::path::PathBuf;
 
 use anyhow::Context;

iroh/Cargo.toml

@@ -16,92 +16,44 @@ rust-version = "1.76"
 workspace = true
 
 [dependencies]
-anyhow = { version = "1" }
-async-channel = "2.3.1"
-bytes = "1.7"
-derive_more = { version = "1.0.0", features = [
-    "debug",
-    "display",
-    "from",
-    "try_into",
-    "from_str",
-] }
-futures-lite = "2.5"
-futures-util = "0.3"
 iroh-base = { version = "0.28.0", features = ["key"] }
-iroh-io = { version = "0.6.0", features = ["stats"] }
-iroh-metrics = { version = "0.28.0", optional = true }
-iroh-net = { version = "0.28.1", features = ["discovery-local-network"] }
-iroh-node-util = { version = "0.28.0", path = "../iroh-node-util" }
+iroh-net = { version = "0.28.1", default-features = false }
 iroh-router = { version = "0.28.0" }
-nested_enum_utils = "0.1.0"
-num_cpus = { version = "1.15.0" }
-parking_lot = "0.12.1"
-postcard = { version = "1", default-features = false, features = [
-    "alloc",
-    "use-std",
-    "experimental-derive",
-] }
-quic-rpc = { version = "0.15", default-features = false, features = [
-    "flume-transport",
-    "quinn-transport",
-] }
-quic-rpc-derive = { version = "0.15" }
-quinn = { package = "iroh-quinn", version = "0.12" }
-serde = { version = "1", features = ["derive"] }
-strum = { version = "0.26", features = ["derive"] }
-thiserror = "2"
-tempfile = "3.4"
-tokio = { version = "1", features = ["io-util", "rt"] }
-tokio-util = { version = "0.7", features = ["codec", "io-util", "io", "time"] }
-tracing = "0.1"
-iroh-relay = { version = "0.28", path = "../iroh-relay" }
-ref-cast = "1.0.23"
 
 # Examples
+anyhow = { version = "1", optional = true }
 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
+tokio = { version = "1", features = ["full"], optional = true }
+tracing-subscriber = { version = "0.3", features = ["env-filter"], optional = true }
+futures-lite = { version = "2.5", optional = true }
+tracing = { version = "0.1", optional = true }
+bytes = { version = "1.8", optional = true }
 
-# Documentation tests
-url = { version = "2.5", features = ["serde"] }
-serde-error = "0.1.3"
 
 [features]
-default = ["metrics"]
-metrics = ["iroh-metrics"]
-test = []
+default = ["metrics", "discovery-pkarr-dht"]
+metrics = ["iroh-net/metrics"]
+discovery-local-network = ["iroh-net/discovery-local-network"]
 discovery-pkarr-dht = ["iroh-net/discovery-pkarr-dht"]
-test-utils = ["iroh-net/test-utils"]
 
-examples = ["dep:clap", "dep:indicatif", "dep:parse-size"]
-
-[dev-dependencies]
-anyhow = { version = "1" }
-bao-tree = { version = "0.13", features = ["tokio_fsm"] }
-futures-buffered = "0.2.4"
-genawaiter = { version = "0.99", features = ["futures03"] }
-iroh = { path = ".", features = ["test-utils"] }
-iroh-test = "0.28.0"
-proptest = "1.2.0"
-rand = "0.8"
-rand_chacha = "0.3.1"
-regex = { version = "1.7.1", features = ["std"] }
-serde_json = "1"
-testdir = "0.9.1"
-testresult = "0.4.0"
-tokio = { version = "1", features = ["macros", "io-util", "rt"] }
-tokio-stream = "0.1"
-tracing-subscriber = { version = "0.3", features = ["env-filter"] }
+examples = [
+  "dep:anyhow",
+  "dep:clap",
+  "dep:indicatif",
+  "dep:parse-size",
+  "dep:tokio",
+  "dep:tracing-subscriber",
+  "dep:futures-lite",
+  "dep:tracing",
+  "dep:bytes",
+]
 
 [package.metadata.docs.rs]
 all-features = true
 rustdoc-args = ["--cfg", "iroh_docsrs"]
 
-[[example]]
-name = "rpc"
-required-features = ["examples"]
-
 [[example]]
 name = "transfer"
 required-features = ["examples"]

iroh/examples/transfer.rs

@@ -9,7 +9,8 @@ use clap::{Parser, Subcommand};
 use futures_lite::StreamExt;
 use indicatif::HumanBytes;
 use iroh_net::{
-    key::SecretKey, ticket::NodeTicket, Endpoint, NodeAddr, RelayMap, RelayMode, RelayUrl,
+    endpoint::ConnectionError, key::SecretKey, ticket::NodeTicket, Endpoint, NodeAddr, RelayMap,
+    RelayMode, RelayUrl,
 };
 use tracing::info;
 
@@ -132,7 +133,7 @@ async fn provide(size: u64, relay_url: Option<String>) -> anyhow::Result<()> {
             // it received this message.
             let res = tokio::time::timeout(Duration::from_secs(3), async move {
                 let closed = conn.closed().await;
-                if !matches!(closed, quinn::ConnectionError::ApplicationClosed(_)) {
+                if !matches!(closed, ConnectionError::ApplicationClosed(_)) {
                     println!("node {node_id} disconnected with an error: {closed:#}");
                 }
             })