fix: allow SSE server router to be nested#240

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
jokemanfire merged 2 commits into from
Jun 7, 2025
Merged

fix: allow SSE server router to be nested #240

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
4810535
fix: allow SSE server router to be nested
swallez Jun 2, 2025
6f75ce6
chore: run cargo fmt + clippy
swallez Jun 3, 2025
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
1 change: 1 addition & 0 deletions crates/rmcp/Cargo.toml
View file
Open in desktop
Original file line numberDiff line numberDiff line change
Expand Up@@ -151,6 +151,7 @@ path = "tests/test_tool_macros.rs"
[[test]]
name = "test_with_python"
required-features = [
"reqwest",
"server",
"client",
"transport-sse-server",
Expand Down
10 changes: 5 additions & 5 deletions crates/rmcp/src/transport/sse_server.rs
View file
Open in desktop
Original file line numberDiff line numberDiff line change
@@ -1,8 +1,8 @@
use std::{collections::HashMap, io, net::SocketAddr, sync::Arc, time::Duration};

use axum::{
Json, Router,
extract::{Query, State},
Extension, Json, Router,
extract::{NestedPath, Query, State},
http::{StatusCode, request::Parts},
response::{
Response,
Expand DownExpand Up@@ -84,6 +84,7 @@ async fn post_event_handler(

async fn sse_handler(
State(app): State<App>,
nested_path: Option<Extension<NestedPath>>,
parts: Parts,
) -> Result<Sse<impl Stream<Item = Result<Event, io::Error>>>, Response<String>> {
let session = session_id();
Expand DownExpand Up@@ -115,12 +116,13 @@ async fn sse_handler(
*response.status_mut() = StatusCode::INTERNAL_SERVER_ERROR;
return Err(response);
}
let nested_path = nested_path.as_deref().map(NestedPath::as_str).unwrap_or("");
let post_path = app.post_path.as_ref();
let ping_interval = app.sse_ping_interval;
let stream = futures::stream::once(futures::future::ok(
Event::default()
.event("endpoint")
.data(format!("{post_path}?sessionId={session}")),
.data(format!("{nested_path}{post_path}?sessionId={session}")),
))
.chain(ReceiverStream::new(to_client_rx).map(|message| {
match serde_json::to_string(&message) {
Expand DownExpand Up@@ -257,8 +259,6 @@ impl SseServer {
Ok(sse_server)
}

/// Warning: This function creates a new SseServer instance with the provided configuration.
/// `App.post_path` may be incorrect if using `Router` as an embedded router.
pub fn new(config: SseServerConfig) -> (SseServer, Router) {
let (app, transport_rx) = App::new(
config.post_path.clone(),
Expand Down
85 changes: 67 additions & 18 deletions crates/rmcp/tests/test_with_python.rs
View file
Open in desktop
Original file line numberDiff line numberDiff line change
@@ -1,15 +1,15 @@
use axum::Router;
use rmcp::{
ServiceExt,
transport::{ConfigureCommandExt, SseServer, TokioChildProcess},
transport::{ConfigureCommandExt, SseServer, TokioChildProcess, sse_server::SseServerConfig},
};
use tokio::time::timeout;
use tokio_util::sync::CancellationToken;
use tracing_subscriber::{layer::SubscriberExt, util::SubscriberInitExt};
mod common;
use common::calculator::Calculator;

const BIND_ADDRESS: &str = "127.0.0.1:8000";

#[tokio::test]
async fn test_with_python_client() -> anyhow::Result<()> {
async fn init() -> anyhow::Result<()> {
let _ = tracing_subscriber::registry()
.with(
tracing_subscriber::EnvFilter::try_from_default_env()
Expand All@@ -23,6 +23,14 @@ async fn test_with_python_client() -> anyhow::Result<()> {
.spawn()?
.wait()
.await?;
Ok(())
}

#[tokio::test]
async fn test_with_python_client() -> anyhow::Result<()> {
init().await?;

const BIND_ADDRESS: &str = "127.0.0.1:8000";

let ct = SseServer::serve(BIND_ADDRESS.parse()?)
.await?
Expand All@@ -31,6 +39,7 @@ async fn test_with_python_client() -> anyhow::Result<()> {
let status = tokio::process::Command::new("uv")
.arg("run")
.arg("tests/test_with_python/client.py")
.arg(format!("http://{BIND_ADDRESS}/sse"))
.spawn()?
.wait()
.await?;
Expand All@@ -39,21 +48,61 @@ async fn test_with_python_client() -> anyhow::Result<()> {
Ok(())
}

/// Test the SSE server in a nested Axum router.
#[tokio::test]
async fn test_nested_with_python_client() -> anyhow::Result<()> {
init().await?;

const BIND_ADDRESS: &str = "127.0.0.1:8001";

// Create an SSE router
let sse_config = SseServerConfig {
bind: BIND_ADDRESS.parse()?,
sse_path: "/sse".to_string(),
post_path: "/message".to_string(),
ct: CancellationToken::new(),
sse_keep_alive: None,
};

let listener = tokio::net::TcpListener::bind(&sse_config.bind).await?;

let (sse_server, sse_router) = SseServer::new(sse_config);
let ct = sse_server.with_service(Calculator::default);

let main_router = Router::new().nest("/nested", sse_router);

let server_ct = ct.clone();
let server = axum::serve(listener, main_router).with_graceful_shutdown(async move {
server_ct.cancelled().await;
tracing::info!("sse server cancelled");
});

tokio::spawn(async move {
let _ = server.await;
tracing::info!("sse server shutting down");
});

// Spawn the process with timeout, as failure to access the '/message' URL
// causes the client to never exit.
let status = timeout(
tokio::time::Duration::from_secs(5),
tokio::process::Command::new("uv")
.arg("run")
.arg("tests/test_with_python/client.py")
.arg(format!("http://{BIND_ADDRESS}/nested/sse"))
.spawn()?
.wait(),
)
.await?;
assert!(status?.success());
ct.cancel();
Ok(())
}

#[tokio::test]
async fn test_with_python_server() -> anyhow::Result<()> {
let _ = tracing_subscriber::registry()
.with(
tracing_subscriber::EnvFilter::try_from_default_env()
.unwrap_or_else(|_| "debug".to_string().into()),
)
.with(tracing_subscriber::fmt::layer())
.try_init();
tokio::process::Command::new("uv")
.args(["pip", "install", "-r", "pyproject.toml"])
.current_dir("tests/test_with_python")
.spawn()?
.wait()
.await?;
init().await?;

let transport = TokioChildProcess::new(tokio::process::Command::new("uv").configure(|cmd| {
cmd.arg("run").arg("tests/test_with_python/server.py");
}))?;
Expand Down
8 changes: 4 additions & 4 deletions crates/rmcp/tests/test_with_python/client.py
View file
Open in desktop
Original file line numberDiff line numberDiff line change
@@ -1,10 +1,10 @@
from mcp import ClientSession, StdioServerParameters, types
from mcp.client.sse import sse_client


import sys

async def run():
async with sse_client("http://localhost:8000/sse") as (read, write):
url = sys.argv[1]
async with sse_client(url) as (read, write):
async with ClientSession(
read, write
) as session:
Expand All@@ -25,4 +25,4 @@ async def run():
if __name__ == "__main__":
import asyncio

asyncio.run(run())
asyncio.run(run())
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

Skip to content
fix: allow SSE server router to be nested#240

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

 Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and
privacy statement. We’ll occasionally send you account related emails.

Already on GitHub?
Sign in
to your account

 Merged

jokemanfire
merged 2 commits into

from

Jun 7, 2025
 Merged


fix: allow SSE server router to be nested
#240
Show file tree
Hide file tree
 Changes from all commits
Commits

Show all changes


2 commits


Select commit
Hold shift + click to select a range
4810535

fix: allow SSE server router to be nested


swallez Jun 2, 2025
6f75ce6

chore: run cargo fmt + clippy


swallez Jun 3, 2025

File filter

Filter by extension
Filter by extension
Conversations

Failed to load comments. 
Loading
Jump to

Jump to file


Failed to load files. 
Loading
 Diff view

 Diff view


1 change: 1 addition & 0 deletions
crates/rmcp/Cargo.toml

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -151,6 +151,7 @@ path = "tests/test_tool_macros.rs"
[[test]]
name = "test_with_python"
required-features = [
 "reqwest",
 "server",
 "client",
 "transport-sse-server",
Expand Down

10 changes: 5 additions & 5 deletions
crates/rmcp/src/transport/sse_server.rs

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -1,8 +1,8 @@
use std::{collections::HashMap, io, net::SocketAddr, sync::Arc, time::Duration};

use axum::{
 Json, Router,
 extract::{Query, State},
Extension, Json, Router,
 extract::{NestedPath, Query, State},
 http::{StatusCode, request::Parts},
 response::{
 Response,
Expand DownExpand Up@@ -84,6 +84,7 @@ async fn post_event_handler(

async fn sse_handler(
 State(app): State<App>,
 nested_path: Option<Extension<NestedPath>>,
 parts: Parts,
) -> Result<Sse<impl Stream<Item = Result<Event, io::Error>>>, Response<String>> {
 let session = session_id();
Expand DownExpand Up@@ -115,12 +116,13 @@ async fn sse_handler(
 *response.status_mut() = StatusCode::INTERNAL_SERVER_ERROR;
 return Err(response);
 }
 let nested_path = nested_path.as_deref().map(NestedPath::as_str).unwrap_or("");
 let post_path = app.post_path.as_ref();
 let ping_interval = app.sse_ping_interval;
 let stream = futures::stream::once(futures::future::ok(
 Event::default()
 .event("endpoint")
 .data(format!("{post_path}?sessionId={session}")),
 .data(format!("{nested_path}{post_path}?sessionId={session}")),
 ))
 .chain(ReceiverStream::new(to_client_rx).map(|message| {
 match serde_json::to_string(&message) {
Expand DownExpand Up@@ -257,8 +259,6 @@ impl SseServer {
 Ok(sse_server)
 }

 /// Warning: This function creates a new SseServer instance with the provided configuration.
 /// `App.post_path` may be incorrect if using `Router` as an embedded router.
 pub fn new(config: SseServerConfig) -> (SseServer, Router) {
 let (app, transport_rx) = App::new(
 config.post_path.clone(),
Expand Down

85 changes: 67 additions & 18 deletions
crates/rmcp/tests/test_with_python.rs

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -1,15 +1,15 @@
use axum::Router;
use rmcp::{
 ServiceExt,
 transport::{ConfigureCommandExt, SseServer, TokioChildProcess},
 transport::{ConfigureCommandExt, SseServer, TokioChildProcess, sse_server::SseServerConfig},
};
use tokio::time::timeout;
use tokio_util::sync::CancellationToken;
use tracing_subscriber::{layer::SubscriberExt, util::SubscriberInitExt};
mod common;
use common::calculator::Calculator;

const BIND_ADDRESS: &str = "127.0.0.1:8000";

#[tokio::test]
async fn test_with_python_client() -> anyhow::Result<()> {
async fn init() -> anyhow::Result<()> {
 let _ = tracing_subscriber::registry()
 .with(
 tracing_subscriber::EnvFilter::try_from_default_env()
Expand All@@ -23,6 +23,14 @@ async fn test_with_python_client() -> anyhow::Result<()> {
 .spawn()?
 .wait()
 .await?;
 Ok(())
}

#[tokio::test]
async fn test_with_python_client() -> anyhow::Result<()> {
 init().await?;

 const BIND_ADDRESS: &str = "127.0.0.1:8000";

 let ct = SseServer::serve(BIND_ADDRESS.parse()?)
 .await?
Expand All@@ -31,6 +39,7 @@ async fn test_with_python_client() -> anyhow::Result<()> {
 let status = tokio::process::Command::new("uv")
 .arg("run")
 .arg("tests/test_with_python/client.py")
 .arg(format!("http://{BIND_ADDRESS}/sse"))
 .spawn()?
 .wait()
 .await?;
Expand All@@ -39,21 +48,61 @@ async fn test_with_python_client() -> anyhow::Result<()> {
 Ok(())
}

/// Test the SSE server in a nested Axum router.
#[tokio::test]
async fn test_nested_with_python_client() -> anyhow::Result<()> {
 init().await?;

 const BIND_ADDRESS: &str = "127.0.0.1:8001";

 // Create an SSE router
 let sse_config = SseServerConfig {
 bind: BIND_ADDRESS.parse()?,
 sse_path: "/sse".to_string(),
 post_path: "/message".to_string(),
 ct: CancellationToken::new(),
 sse_keep_alive: None,
 };

 let listener = tokio::net::TcpListener::bind(&sse_config.bind).await?;

 let (sse_server, sse_router) = SseServer::new(sse_config);
 let ct = sse_server.with_service(Calculator::default);

 let main_router = Router::new().nest("/nested", sse_router);

 let server_ct = ct.clone();
 let server = axum::serve(listener, main_router).with_graceful_shutdown(async move {
 server_ct.cancelled().await;
 tracing::info!("sse server cancelled");
 });

 tokio::spawn(async move {
 let _ = server.await;
 tracing::info!("sse server shutting down");
 });

 // Spawn the process with timeout, as failure to access the '/message' URL
 // causes the client to never exit.
 let status = timeout(
 tokio::time::Duration::from_secs(5),
 tokio::process::Command::new("uv")
 .arg("run")
 .arg("tests/test_with_python/client.py")
 .arg(format!("http://{BIND_ADDRESS}/nested/sse"))
 .spawn()?
 .wait(),
 )
 .await?;
 assert!(status?.success());
 ct.cancel();
 Ok(())
}

#[tokio::test]
async fn test_with_python_server() -> anyhow::Result<()> {
 let _ = tracing_subscriber::registry()
 .with(
 tracing_subscriber::EnvFilter::try_from_default_env()
 .unwrap_or_else(|_| "debug".to_string().into()),
 )
 .with(tracing_subscriber::fmt::layer())
 .try_init();
 tokio::process::Command::new("uv")
 .args(["pip", "install", "-r", "pyproject.toml"])
 .current_dir("tests/test_with_python")
 .spawn()?
 .wait()
 .await?;
 init().await?;

 let transport = TokioChildProcess::new(tokio::process::Command::new("uv").configure(|cmd| {
 cmd.arg("run").arg("tests/test_with_python/server.py");
 }))?;
Expand Down

8 changes: 4 additions & 4 deletions
crates/rmcp/tests/test_with_python/client.py

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -1,10 +1,10 @@
from mcp import ClientSession, StdioServerParameters, types
from mcp.client.sse import sse_client


import sys

async def run():
 async with sse_client("http://localhost:8000/sse") as (read, write):
 url = sys.argv[1]
 async with sse_client(url) as (read, write):
 async with ClientSession(
 read, write
 ) as session:
Expand All@@ -25,4 +25,4 @@ async def run():
if __name__ == "__main__":
 import asyncio

 asyncio.run(run())
 asyncio.run(run())

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
fix: allow SSE server router to be nested#240

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

 Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and
privacy statement. We’ll occasionally send you account related emails.

Already on GitHub?
Sign in
to your account

 Merged

jokemanfire
merged 2 commits into

from

Jun 7, 2025
 Merged


fix: allow SSE server router to be nested
#240
Show file tree
Hide file tree
 Changes from all commits
Commits

Show all changes


2 commits


Select commit
Hold shift + click to select a range
4810535

fix: allow SSE server router to be nested


swallez Jun 2, 2025
6f75ce6

chore: run cargo fmt + clippy


swallez Jun 3, 2025

File filter

Filter by extension
Filter by extension
Conversations

Failed to load comments. 
Loading
Jump to

Jump to file


Failed to load files. 
Loading
 Diff view

 Diff view


1 change: 1 addition & 0 deletions
crates/rmcp/Cargo.toml

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -151,6 +151,7 @@ path = "tests/test_tool_macros.rs"
[[test]]
name = "test_with_python"
required-features = [
 "reqwest",
 "server",
 "client",
 "transport-sse-server",
Expand Down

10 changes: 5 additions & 5 deletions
crates/rmcp/src/transport/sse_server.rs

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -1,8 +1,8 @@
use std::{collections::HashMap, io, net::SocketAddr, sync::Arc, time::Duration};

use axum::{
 Json, Router,
 extract::{Query, State},
Extension, Json, Router,
 extract::{NestedPath, Query, State},
 http::{StatusCode, request::Parts},
 response::{
 Response,
Expand DownExpand Up@@ -84,6 +84,7 @@ async fn post_event_handler(

async fn sse_handler(
 State(app): State<App>,
 nested_path: Option<Extension<NestedPath>>,
 parts: Parts,
) -> Result<Sse<impl Stream<Item = Result<Event, io::Error>>>, Response<String>> {
 let session = session_id();
Expand DownExpand Up@@ -115,12 +116,13 @@ async fn sse_handler(
 *response.status_mut() = StatusCode::INTERNAL_SERVER_ERROR;
 return Err(response);
 }
 let nested_path = nested_path.as_deref().map(NestedPath::as_str).unwrap_or("");
 let post_path = app.post_path.as_ref();
 let ping_interval = app.sse_ping_interval;
 let stream = futures::stream::once(futures::future::ok(
 Event::default()
 .event("endpoint")
 .data(format!("{post_path}?sessionId={session}")),
 .data(format!("{nested_path}{post_path}?sessionId={session}")),
 ))
 .chain(ReceiverStream::new(to_client_rx).map(|message| {
 match serde_json::to_string(&message) {
Expand DownExpand Up@@ -257,8 +259,6 @@ impl SseServer {
 Ok(sse_server)
 }

 /// Warning: This function creates a new SseServer instance with the provided configuration.
 /// `App.post_path` may be incorrect if using `Router` as an embedded router.
 pub fn new(config: SseServerConfig) -> (SseServer, Router) {
 let (app, transport_rx) = App::new(
 config.post_path.clone(),
Expand Down

85 changes: 67 additions & 18 deletions
crates/rmcp/tests/test_with_python.rs

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -1,15 +1,15 @@
use axum::Router;
use rmcp::{
 ServiceExt,
 transport::{ConfigureCommandExt, SseServer, TokioChildProcess},
 transport::{ConfigureCommandExt, SseServer, TokioChildProcess, sse_server::SseServerConfig},
};
use tokio::time::timeout;
use tokio_util::sync::CancellationToken;
use tracing_subscriber::{layer::SubscriberExt, util::SubscriberInitExt};
mod common;
use common::calculator::Calculator;

const BIND_ADDRESS: &str = "127.0.0.1:8000";

#[tokio::test]
async fn test_with_python_client() -> anyhow::Result<()> {
async fn init() -> anyhow::Result<()> {
 let _ = tracing_subscriber::registry()
 .with(
 tracing_subscriber::EnvFilter::try_from_default_env()
Expand All@@ -23,6 +23,14 @@ async fn test_with_python_client() -> anyhow::Result<()> {
 .spawn()?
 .wait()
 .await?;
 Ok(())
}

#[tokio::test]
async fn test_with_python_client() -> anyhow::Result<()> {
 init().await?;

 const BIND_ADDRESS: &str = "127.0.0.1:8000";

 let ct = SseServer::serve(BIND_ADDRESS.parse()?)
 .await?
Expand All@@ -31,6 +39,7 @@ async fn test_with_python_client() -> anyhow::Result<()> {
 let status = tokio::process::Command::new("uv")
 .arg("run")
 .arg("tests/test_with_python/client.py")
 .arg(format!("http://{BIND_ADDRESS}/sse"))
 .spawn()?
 .wait()
 .await?;
Expand All@@ -39,21 +48,61 @@ async fn test_with_python_client() -> anyhow::Result<()> {
 Ok(())
}

/// Test the SSE server in a nested Axum router.
#[tokio::test]
async fn test_nested_with_python_client() -> anyhow::Result<()> {
 init().await?;

 const BIND_ADDRESS: &str = "127.0.0.1:8001";

 // Create an SSE router
 let sse_config = SseServerConfig {
 bind: BIND_ADDRESS.parse()?,
 sse_path: "/sse".to_string(),
 post_path: "/message".to_string(),
 ct: CancellationToken::new(),
 sse_keep_alive: None,
 };

 let listener = tokio::net::TcpListener::bind(&sse_config.bind).await?;

 let (sse_server, sse_router) = SseServer::new(sse_config);
 let ct = sse_server.with_service(Calculator::default);

 let main_router = Router::new().nest("/nested", sse_router);

 let server_ct = ct.clone();
 let server = axum::serve(listener, main_router).with_graceful_shutdown(async move {
 server_ct.cancelled().await;
 tracing::info!("sse server cancelled");
 });

 tokio::spawn(async move {
 let _ = server.await;
 tracing::info!("sse server shutting down");
 });

 // Spawn the process with timeout, as failure to access the '/message' URL
 // causes the client to never exit.
 let status = timeout(
 tokio::time::Duration::from_secs(5),
 tokio::process::Command::new("uv")
 .arg("run")
 .arg("tests/test_with_python/client.py")
 .arg(format!("http://{BIND_ADDRESS}/nested/sse"))
 .spawn()?
 .wait(),
 )
 .await?;
 assert!(status?.success());
 ct.cancel();
 Ok(())
}

#[tokio::test]
async fn test_with_python_server() -> anyhow::Result<()> {
 let _ = tracing_subscriber::registry()
 .with(
 tracing_subscriber::EnvFilter::try_from_default_env()
 .unwrap_or_else(|_| "debug".to_string().into()),
 )
 .with(tracing_subscriber::fmt::layer())
 .try_init();
 tokio::process::Command::new("uv")
 .args(["pip", "install", "-r", "pyproject.toml"])
 .current_dir("tests/test_with_python")
 .spawn()?
 .wait()
 .await?;
 init().await?;

 let transport = TokioChildProcess::new(tokio::process::Command::new("uv").configure(|cmd| {
 cmd.arg("run").arg("tests/test_with_python/server.py");
 }))?;
Expand Down

8 changes: 4 additions & 4 deletions
crates/rmcp/tests/test_with_python/client.py

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -1,10 +1,10 @@
from mcp import ClientSession, StdioServerParameters, types
from mcp.client.sse import sse_client


import sys

async def run():
 async with sse_client("http://localhost:8000/sse") as (read, write):
 url = sys.argv[1]
 async with sse_client(url) as (read, write):
 async with ClientSession(
 read, write
 ) as session:
Expand All@@ -25,4 +25,4 @@ async def run():
if __name__ == "__main__":
 import asyncio

 asyncio.run(run())
 asyncio.run(run())

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
fix: allow SSE server router to be nested#240

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

 Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and
privacy statement. We’ll occasionally send you account related emails.

Already on GitHub?
Sign in
to your account

 Merged

jokemanfire
merged 2 commits into

from

Jun 7, 2025
 Merged


fix: allow SSE server router to be nested
#240
Show file tree
Hide file tree
 Changes from all commits
Commits

Show all changes


2 commits


Select commit
Hold shift + click to select a range
4810535

fix: allow SSE server router to be nested


swallez Jun 2, 2025
6f75ce6

chore: run cargo fmt + clippy


swallez Jun 3, 2025

File filter

Filter by extension
Filter by extension
Conversations

Failed to load comments. 
Loading
Jump to

Jump to file


Failed to load files. 
Loading
 Diff view

 Diff view


1 change: 1 addition & 0 deletions
crates/rmcp/Cargo.toml

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -151,6 +151,7 @@ path = "tests/test_tool_macros.rs"
[[test]]
name = "test_with_python"
required-features = [
 "reqwest",
 "server",
 "client",
 "transport-sse-server",
Expand Down

10 changes: 5 additions & 5 deletions
crates/rmcp/src/transport/sse_server.rs

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -1,8 +1,8 @@
use std::{collections::HashMap, io, net::SocketAddr, sync::Arc, time::Duration};

use axum::{
 Json, Router,
 extract::{Query, State},
Extension, Json, Router,
 extract::{NestedPath, Query, State},
 http::{StatusCode, request::Parts},
 response::{
 Response,
Expand DownExpand Up@@ -84,6 +84,7 @@ async fn post_event_handler(

async fn sse_handler(
 State(app): State<App>,
 nested_path: Option<Extension<NestedPath>>,
 parts: Parts,
) -> Result<Sse<impl Stream<Item = Result<Event, io::Error>>>, Response<String>> {
 let session = session_id();
Expand DownExpand Up@@ -115,12 +116,13 @@ async fn sse_handler(
 *response.status_mut() = StatusCode::INTERNAL_SERVER_ERROR;
 return Err(response);
 }
 let nested_path = nested_path.as_deref().map(NestedPath::as_str).unwrap_or("");
 let post_path = app.post_path.as_ref();
 let ping_interval = app.sse_ping_interval;
 let stream = futures::stream::once(futures::future::ok(
 Event::default()
 .event("endpoint")
 .data(format!("{post_path}?sessionId={session}")),
 .data(format!("{nested_path}{post_path}?sessionId={session}")),
 ))
 .chain(ReceiverStream::new(to_client_rx).map(|message| {
 match serde_json::to_string(&message) {
Expand DownExpand Up@@ -257,8 +259,6 @@ impl SseServer {
 Ok(sse_server)
 }

 /// Warning: This function creates a new SseServer instance with the provided configuration.
 /// `App.post_path` may be incorrect if using `Router` as an embedded router.
 pub fn new(config: SseServerConfig) -> (SseServer, Router) {
 let (app, transport_rx) = App::new(
 config.post_path.clone(),
Expand Down

85 changes: 67 additions & 18 deletions
crates/rmcp/tests/test_with_python.rs

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -1,15 +1,15 @@
use axum::Router;
use rmcp::{
 ServiceExt,
 transport::{ConfigureCommandExt, SseServer, TokioChildProcess},
 transport::{ConfigureCommandExt, SseServer, TokioChildProcess, sse_server::SseServerConfig},
};
use tokio::time::timeout;
use tokio_util::sync::CancellationToken;
use tracing_subscriber::{layer::SubscriberExt, util::SubscriberInitExt};
mod common;
use common::calculator::Calculator;

const BIND_ADDRESS: &str = "127.0.0.1:8000";

#[tokio::test]
async fn test_with_python_client() -> anyhow::Result<()> {
async fn init() -> anyhow::Result<()> {
 let _ = tracing_subscriber::registry()
 .with(
 tracing_subscriber::EnvFilter::try_from_default_env()
Expand All@@ -23,6 +23,14 @@ async fn test_with_python_client() -> anyhow::Result<()> {
 .spawn()?
 .wait()
 .await?;
 Ok(())
}

#[tokio::test]
async fn test_with_python_client() -> anyhow::Result<()> {
 init().await?;

 const BIND_ADDRESS: &str = "127.0.0.1:8000";

 let ct = SseServer::serve(BIND_ADDRESS.parse()?)
 .await?
Expand All@@ -31,6 +39,7 @@ async fn test_with_python_client() -> anyhow::Result<()> {
 let status = tokio::process::Command::new("uv")
 .arg("run")
 .arg("tests/test_with_python/client.py")
 .arg(format!("http://{BIND_ADDRESS}/sse"))
 .spawn()?
 .wait()
 .await?;
Expand All@@ -39,21 +48,61 @@ async fn test_with_python_client() -> anyhow::Result<()> {
 Ok(())
}

/// Test the SSE server in a nested Axum router.
#[tokio::test]
async fn test_nested_with_python_client() -> anyhow::Result<()> {
 init().await?;

 const BIND_ADDRESS: &str = "127.0.0.1:8001";

 // Create an SSE router
 let sse_config = SseServerConfig {
 bind: BIND_ADDRESS.parse()?,
 sse_path: "/sse".to_string(),
 post_path: "/message".to_string(),
 ct: CancellationToken::new(),
 sse_keep_alive: None,
 };

 let listener = tokio::net::TcpListener::bind(&sse_config.bind).await?;

 let (sse_server, sse_router) = SseServer::new(sse_config);
 let ct = sse_server.with_service(Calculator::default);

 let main_router = Router::new().nest("/nested", sse_router);

 let server_ct = ct.clone();
 let server = axum::serve(listener, main_router).with_graceful_shutdown(async move {
 server_ct.cancelled().await;
 tracing::info!("sse server cancelled");
 });

 tokio::spawn(async move {
 let _ = server.await;
 tracing::info!("sse server shutting down");
 });

 // Spawn the process with timeout, as failure to access the '/message' URL
 // causes the client to never exit.
 let status = timeout(
 tokio::time::Duration::from_secs(5),
 tokio::process::Command::new("uv")
 .arg("run")
 .arg("tests/test_with_python/client.py")
 .arg(format!("http://{BIND_ADDRESS}/nested/sse"))
 .spawn()?
 .wait(),
 )
 .await?;
 assert!(status?.success());
 ct.cancel();
 Ok(())
}

#[tokio::test]
async fn test_with_python_server() -> anyhow::Result<()> {
 let _ = tracing_subscriber::registry()
 .with(
 tracing_subscriber::EnvFilter::try_from_default_env()
 .unwrap_or_else(|_| "debug".to_string().into()),
 )
 .with(tracing_subscriber::fmt::layer())
 .try_init();
 tokio::process::Command::new("uv")
 .args(["pip", "install", "-r", "pyproject.toml"])
 .current_dir("tests/test_with_python")
 .spawn()?
 .wait()
 .await?;
 init().await?;

 let transport = TokioChildProcess::new(tokio::process::Command::new("uv").configure(|cmd| {
 cmd.arg("run").arg("tests/test_with_python/server.py");
 }))?;
Expand Down

8 changes: 4 additions & 4 deletions
crates/rmcp/tests/test_with_python/client.py

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -1,10 +1,10 @@
from mcp import ClientSession, StdioServerParameters, types
from mcp.client.sse import sse_client


import sys

async def run():
 async with sse_client("http://localhost:8000/sse") as (read, write):
 url = sys.argv[1]
 async with sse_client(url) as (read, write):
 async with ClientSession(
 read, write
 ) as session:
Expand All@@ -25,4 +25,4 @@ async def run():
if __name__ == "__main__":
 import asyncio

 asyncio.run(run())
 asyncio.run(run())

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

Skip to content
fix: allow SSE server router to be nested#240

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

 Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and
privacy statement. We’ll occasionally send you account related emails.

Already on GitHub?
Sign in
to your account

 Merged

jokemanfire
merged 2 commits into

from

Jun 7, 2025
 Merged


fix: allow SSE server router to be nested
#240
Show file tree
Hide file tree
 Changes from all commits
Commits

Show all changes


2 commits


Select commit
Hold shift + click to select a range
4810535

fix: allow SSE server router to be nested


swallez Jun 2, 2025
6f75ce6

chore: run cargo fmt + clippy


swallez Jun 3, 2025

File filter

Filter by extension
Filter by extension
Conversations

Failed to load comments. 
Loading
Jump to

Jump to file


Failed to load files. 
Loading
 Diff view

 Diff view


1 change: 1 addition & 0 deletions
crates/rmcp/Cargo.toml

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -151,6 +151,7 @@ path = "tests/test_tool_macros.rs"
[[test]]
name = "test_with_python"
required-features = [
 "reqwest",
 "server",
 "client",
 "transport-sse-server",
Expand Down

10 changes: 5 additions & 5 deletions
crates/rmcp/src/transport/sse_server.rs

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -1,8 +1,8 @@
use std::{collections::HashMap, io, net::SocketAddr, sync::Arc, time::Duration};

use axum::{
 Json, Router,
 extract::{Query, State},
Extension, Json, Router,
 extract::{NestedPath, Query, State},
 http::{StatusCode, request::Parts},
 response::{
 Response,
Expand DownExpand Up@@ -84,6 +84,7 @@ async fn post_event_handler(

async fn sse_handler(
 State(app): State<App>,
 nested_path: Option<Extension<NestedPath>>,
 parts: Parts,
) -> Result<Sse<impl Stream<Item = Result<Event, io::Error>>>, Response<String>> {
 let session = session_id();
Expand DownExpand Up@@ -115,12 +116,13 @@ async fn sse_handler(
 *response.status_mut() = StatusCode::INTERNAL_SERVER_ERROR;
 return Err(response);
 }
 let nested_path = nested_path.as_deref().map(NestedPath::as_str).unwrap_or("");
 let post_path = app.post_path.as_ref();
 let ping_interval = app.sse_ping_interval;
 let stream = futures::stream::once(futures::future::ok(
 Event::default()
 .event("endpoint")
 .data(format!("{post_path}?sessionId={session}")),
 .data(format!("{nested_path}{post_path}?sessionId={session}")),
 ))
 .chain(ReceiverStream::new(to_client_rx).map(|message| {
 match serde_json::to_string(&message) {
Expand DownExpand Up@@ -257,8 +259,6 @@ impl SseServer {
 Ok(sse_server)
 }

 /// Warning: This function creates a new SseServer instance with the provided configuration.
 /// `App.post_path` may be incorrect if using `Router` as an embedded router.
 pub fn new(config: SseServerConfig) -> (SseServer, Router) {
 let (app, transport_rx) = App::new(
 config.post_path.clone(),
Expand Down

85 changes: 67 additions & 18 deletions
crates/rmcp/tests/test_with_python.rs

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -1,15 +1,15 @@
use axum::Router;
use rmcp::{
 ServiceExt,
 transport::{ConfigureCommandExt, SseServer, TokioChildProcess},
 transport::{ConfigureCommandExt, SseServer, TokioChildProcess, sse_server::SseServerConfig},
};
use tokio::time::timeout;
use tokio_util::sync::CancellationToken;
use tracing_subscriber::{layer::SubscriberExt, util::SubscriberInitExt};
mod common;
use common::calculator::Calculator;

const BIND_ADDRESS: &str = "127.0.0.1:8000";

#[tokio::test]
async fn test_with_python_client() -> anyhow::Result<()> {
async fn init() -> anyhow::Result<()> {
 let _ = tracing_subscriber::registry()
 .with(
 tracing_subscriber::EnvFilter::try_from_default_env()
Expand All@@ -23,6 +23,14 @@ async fn test_with_python_client() -> anyhow::Result<()> {
 .spawn()?
 .wait()
 .await?;
 Ok(())
}

#[tokio::test]
async fn test_with_python_client() -> anyhow::Result<()> {
 init().await?;

 const BIND_ADDRESS: &str = "127.0.0.1:8000";

 let ct = SseServer::serve(BIND_ADDRESS.parse()?)
 .await?
Expand All@@ -31,6 +39,7 @@ async fn test_with_python_client() -> anyhow::Result<()> {
 let status = tokio::process::Command::new("uv")
 .arg("run")
 .arg("tests/test_with_python/client.py")
 .arg(format!("http://{BIND_ADDRESS}/sse"))
 .spawn()?
 .wait()
 .await?;
Expand All@@ -39,21 +48,61 @@ async fn test_with_python_client() -> anyhow::Result<()> {
 Ok(())
}

/// Test the SSE server in a nested Axum router.
#[tokio::test]
async fn test_nested_with_python_client() -> anyhow::Result<()> {
 init().await?;

 const BIND_ADDRESS: &str = "127.0.0.1:8001";

 // Create an SSE router
 let sse_config = SseServerConfig {
 bind: BIND_ADDRESS.parse()?,
 sse_path: "/sse".to_string(),
 post_path: "/message".to_string(),
 ct: CancellationToken::new(),
 sse_keep_alive: None,
 };

 let listener = tokio::net::TcpListener::bind(&sse_config.bind).await?;

 let (sse_server, sse_router) = SseServer::new(sse_config);
 let ct = sse_server.with_service(Calculator::default);

 let main_router = Router::new().nest("/nested", sse_router);

 let server_ct = ct.clone();
 let server = axum::serve(listener, main_router).with_graceful_shutdown(async move {
 server_ct.cancelled().await;
 tracing::info!("sse server cancelled");
 });

 tokio::spawn(async move {
 let _ = server.await;
 tracing::info!("sse server shutting down");
 });

 // Spawn the process with timeout, as failure to access the '/message' URL
 // causes the client to never exit.
 let status = timeout(
 tokio::time::Duration::from_secs(5),
 tokio::process::Command::new("uv")
 .arg("run")
 .arg("tests/test_with_python/client.py")
 .arg(format!("http://{BIND_ADDRESS}/nested/sse"))
 .spawn()?
 .wait(),
 )
 .await?;
 assert!(status?.success());
 ct.cancel();
 Ok(())
}

#[tokio::test]
async fn test_with_python_server() -> anyhow::Result<()> {
 let _ = tracing_subscriber::registry()
 .with(
 tracing_subscriber::EnvFilter::try_from_default_env()
 .unwrap_or_else(|_| "debug".to_string().into()),
 )
 .with(tracing_subscriber::fmt::layer())
 .try_init();
 tokio::process::Command::new("uv")
 .args(["pip", "install", "-r", "pyproject.toml"])
 .current_dir("tests/test_with_python")
 .spawn()?
 .wait()
 .await?;
 init().await?;

 let transport = TokioChildProcess::new(tokio::process::Command::new("uv").configure(|cmd| {
 cmd.arg("run").arg("tests/test_with_python/server.py");
 }))?;
Expand Down

8 changes: 4 additions & 4 deletions
crates/rmcp/tests/test_with_python/client.py

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -1,10 +1,10 @@
from mcp import ClientSession, StdioServerParameters, types
from mcp.client.sse import sse_client


import sys

async def run():
 async with sse_client("http://localhost:8000/sse") as (read, write):
 url = sys.argv[1]
 async with sse_client(url) as (read, write):
 async with ClientSession(
 read, write
 ) as session:
Expand All@@ -25,4 +25,4 @@ async def run():
if __name__ == "__main__":
 import asyncio

 asyncio.run(run())
 asyncio.run(run())

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
fix: allow SSE server router to be nested#240

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

 Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and
privacy statement. We’ll occasionally send you account related emails.

Already on GitHub?
Sign in
to your account

 Merged

jokemanfire
merged 2 commits into

from

Jun 7, 2025
 Merged


fix: allow SSE server router to be nested
#240
Show file tree
Hide file tree
 Changes from all commits
Commits

Show all changes


2 commits


Select commit
Hold shift + click to select a range
4810535

fix: allow SSE server router to be nested


swallez Jun 2, 2025
6f75ce6

chore: run cargo fmt + clippy


swallez Jun 3, 2025

File filter

Filter by extension
Filter by extension
Conversations

Failed to load comments. 
Loading
Jump to

Jump to file


Failed to load files. 
Loading
 Diff view

 Diff view


1 change: 1 addition & 0 deletions
crates/rmcp/Cargo.toml

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -151,6 +151,7 @@ path = "tests/test_tool_macros.rs"
[[test]]
name = "test_with_python"
required-features = [
 "reqwest",
 "server",
 "client",
 "transport-sse-server",
Expand Down

10 changes: 5 additions & 5 deletions
crates/rmcp/src/transport/sse_server.rs

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -1,8 +1,8 @@
use std::{collections::HashMap, io, net::SocketAddr, sync::Arc, time::Duration};

use axum::{
 Json, Router,
 extract::{Query, State},
Extension, Json, Router,
 extract::{NestedPath, Query, State},
 http::{StatusCode, request::Parts},
 response::{
 Response,
Expand DownExpand Up@@ -84,6 +84,7 @@ async fn post_event_handler(

async fn sse_handler(
 State(app): State<App>,
 nested_path: Option<Extension<NestedPath>>,
 parts: Parts,
) -> Result<Sse<impl Stream<Item = Result<Event, io::Error>>>, Response<String>> {
 let session = session_id();
Expand DownExpand Up@@ -115,12 +116,13 @@ async fn sse_handler(
 *response.status_mut() = StatusCode::INTERNAL_SERVER_ERROR;
 return Err(response);
 }
 let nested_path = nested_path.as_deref().map(NestedPath::as_str).unwrap_or("");
 let post_path = app.post_path.as_ref();
 let ping_interval = app.sse_ping_interval;
 let stream = futures::stream::once(futures::future::ok(
 Event::default()
 .event("endpoint")
 .data(format!("{post_path}?sessionId={session}")),
 .data(format!("{nested_path}{post_path}?sessionId={session}")),
 ))
 .chain(ReceiverStream::new(to_client_rx).map(|message| {
 match serde_json::to_string(&message) {
Expand DownExpand Up@@ -257,8 +259,6 @@ impl SseServer {
 Ok(sse_server)
 }

 /// Warning: This function creates a new SseServer instance with the provided configuration.
 /// `App.post_path` may be incorrect if using `Router` as an embedded router.
 pub fn new(config: SseServerConfig) -> (SseServer, Router) {
 let (app, transport_rx) = App::new(
 config.post_path.clone(),
Expand Down

85 changes: 67 additions & 18 deletions
crates/rmcp/tests/test_with_python.rs

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -1,15 +1,15 @@
use axum::Router;
use rmcp::{
 ServiceExt,
 transport::{ConfigureCommandExt, SseServer, TokioChildProcess},
 transport::{ConfigureCommandExt, SseServer, TokioChildProcess, sse_server::SseServerConfig},
};
use tokio::time::timeout;
use tokio_util::sync::CancellationToken;
use tracing_subscriber::{layer::SubscriberExt, util::SubscriberInitExt};
mod common;
use common::calculator::Calculator;

const BIND_ADDRESS: &str = "127.0.0.1:8000";

#[tokio::test]
async fn test_with_python_client() -> anyhow::Result<()> {
async fn init() -> anyhow::Result<()> {
 let _ = tracing_subscriber::registry()
 .with(
 tracing_subscriber::EnvFilter::try_from_default_env()
Expand All@@ -23,6 +23,14 @@ async fn test_with_python_client() -> anyhow::Result<()> {
 .spawn()?
 .wait()
 .await?;
 Ok(())
}

#[tokio::test]
async fn test_with_python_client() -> anyhow::Result<()> {
 init().await?;

 const BIND_ADDRESS: &str = "127.0.0.1:8000";

 let ct = SseServer::serve(BIND_ADDRESS.parse()?)
 .await?
Expand All@@ -31,6 +39,7 @@ async fn test_with_python_client() -> anyhow::Result<()> {
 let status = tokio::process::Command::new("uv")
 .arg("run")
 .arg("tests/test_with_python/client.py")
 .arg(format!("http://{BIND_ADDRESS}/sse"))
 .spawn()?
 .wait()
 .await?;
Expand All@@ -39,21 +48,61 @@ async fn test_with_python_client() -> anyhow::Result<()> {
 Ok(())
}

/// Test the SSE server in a nested Axum router.
#[tokio::test]
async fn test_nested_with_python_client() -> anyhow::Result<()> {
 init().await?;

 const BIND_ADDRESS: &str = "127.0.0.1:8001";

 // Create an SSE router
 let sse_config = SseServerConfig {
 bind: BIND_ADDRESS.parse()?,
 sse_path: "/sse".to_string(),
 post_path: "/message".to_string(),
 ct: CancellationToken::new(),
 sse_keep_alive: None,
 };

 let listener = tokio::net::TcpListener::bind(&sse_config.bind).await?;

 let (sse_server, sse_router) = SseServer::new(sse_config);
 let ct = sse_server.with_service(Calculator::default);

 let main_router = Router::new().nest("/nested", sse_router);

 let server_ct = ct.clone();
 let server = axum::serve(listener, main_router).with_graceful_shutdown(async move {
 server_ct.cancelled().await;
 tracing::info!("sse server cancelled");
 });

 tokio::spawn(async move {
 let _ = server.await;
 tracing::info!("sse server shutting down");
 });

 // Spawn the process with timeout, as failure to access the '/message' URL
 // causes the client to never exit.
 let status = timeout(
 tokio::time::Duration::from_secs(5),
 tokio::process::Command::new("uv")
 .arg("run")
 .arg("tests/test_with_python/client.py")
 .arg(format!("http://{BIND_ADDRESS}/nested/sse"))
 .spawn()?
 .wait(),
 )
 .await?;
 assert!(status?.success());
 ct.cancel();
 Ok(())
}

#[tokio::test]
async fn test_with_python_server() -> anyhow::Result<()> {
 let _ = tracing_subscriber::registry()
 .with(
 tracing_subscriber::EnvFilter::try_from_default_env()
 .unwrap_or_else(|_| "debug".to_string().into()),
 )
 .with(tracing_subscriber::fmt::layer())
 .try_init();
 tokio::process::Command::new("uv")
 .args(["pip", "install", "-r", "pyproject.toml"])
 .current_dir("tests/test_with_python")
 .spawn()?
 .wait()
 .await?;
 init().await?;

 let transport = TokioChildProcess::new(tokio::process::Command::new("uv").configure(|cmd| {
 cmd.arg("run").arg("tests/test_with_python/server.py");
 }))?;
Expand Down

8 changes: 4 additions & 4 deletions
crates/rmcp/tests/test_with_python/client.py

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -1,10 +1,10 @@
from mcp import ClientSession, StdioServerParameters, types
from mcp.client.sse import sse_client


import sys

async def run():
 async with sse_client("http://localhost:8000/sse") as (read, write):
 url = sys.argv[1]
 async with sse_client(url) as (read, write):
 async with ClientSession(
 read, write
 ) as session:
Expand All@@ -25,4 +25,4 @@ async def run():
if __name__ == "__main__":
 import asyncio

 asyncio.run(run())
 asyncio.run(run())

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
fix: allow SSE server router to be nested#240

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

 Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and
privacy statement. We’ll occasionally send you account related emails.

Already on GitHub?
Sign in
to your account

 Merged

jokemanfire
merged 2 commits into

from

Jun 7, 2025
 Merged


fix: allow SSE server router to be nested
#240
Show file tree
Hide file tree
 Changes from all commits
Commits

Show all changes


2 commits


Select commit
Hold shift + click to select a range
4810535

fix: allow SSE server router to be nested


swallez Jun 2, 2025
6f75ce6

chore: run cargo fmt + clippy


swallez Jun 3, 2025

File filter

Filter by extension
Filter by extension
Conversations

Failed to load comments. 
Loading
Jump to

Jump to file


Failed to load files. 
Loading
 Diff view

 Diff view


1 change: 1 addition & 0 deletions
crates/rmcp/Cargo.toml

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -151,6 +151,7 @@ path = "tests/test_tool_macros.rs"
[[test]]
name = "test_with_python"
required-features = [
 "reqwest",
 "server",
 "client",
 "transport-sse-server",
Expand Down

10 changes: 5 additions & 5 deletions
crates/rmcp/src/transport/sse_server.rs

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -1,8 +1,8 @@
use std::{collections::HashMap, io, net::SocketAddr, sync::Arc, time::Duration};

use axum::{
 Json, Router,
 extract::{Query, State},
Extension, Json, Router,
 extract::{NestedPath, Query, State},
 http::{StatusCode, request::Parts},
 response::{
 Response,
Expand DownExpand Up@@ -84,6 +84,7 @@ async fn post_event_handler(

async fn sse_handler(
 State(app): State<App>,
 nested_path: Option<Extension<NestedPath>>,
 parts: Parts,
) -> Result<Sse<impl Stream<Item = Result<Event, io::Error>>>, Response<String>> {
 let session = session_id();
Expand DownExpand Up@@ -115,12 +116,13 @@ async fn sse_handler(
 *response.status_mut() = StatusCode::INTERNAL_SERVER_ERROR;
 return Err(response);
 }
 let nested_path = nested_path.as_deref().map(NestedPath::as_str).unwrap_or("");
 let post_path = app.post_path.as_ref();
 let ping_interval = app.sse_ping_interval;
 let stream = futures::stream::once(futures::future::ok(
 Event::default()
 .event("endpoint")
 .data(format!("{post_path}?sessionId={session}")),
 .data(format!("{nested_path}{post_path}?sessionId={session}")),
 ))
 .chain(ReceiverStream::new(to_client_rx).map(|message| {
 match serde_json::to_string(&message) {
Expand DownExpand Up@@ -257,8 +259,6 @@ impl SseServer {
 Ok(sse_server)
 }

 /// Warning: This function creates a new SseServer instance with the provided configuration.
 /// `App.post_path` may be incorrect if using `Router` as an embedded router.
 pub fn new(config: SseServerConfig) -> (SseServer, Router) {
 let (app, transport_rx) = App::new(
 config.post_path.clone(),
Expand Down

85 changes: 67 additions & 18 deletions
crates/rmcp/tests/test_with_python.rs

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -1,15 +1,15 @@
use axum::Router;
use rmcp::{
 ServiceExt,
 transport::{ConfigureCommandExt, SseServer, TokioChildProcess},
 transport::{ConfigureCommandExt, SseServer, TokioChildProcess, sse_server::SseServerConfig},
};
use tokio::time::timeout;
use tokio_util::sync::CancellationToken;
use tracing_subscriber::{layer::SubscriberExt, util::SubscriberInitExt};
mod common;
use common::calculator::Calculator;

const BIND_ADDRESS: &str = "127.0.0.1:8000";

#[tokio::test]
async fn test_with_python_client() -> anyhow::Result<()> {
async fn init() -> anyhow::Result<()> {
 let _ = tracing_subscriber::registry()
 .with(
 tracing_subscriber::EnvFilter::try_from_default_env()
Expand All@@ -23,6 +23,14 @@ async fn test_with_python_client() -> anyhow::Result<()> {
 .spawn()?
 .wait()
 .await?;
 Ok(())
}

#[tokio::test]
async fn test_with_python_client() -> anyhow::Result<()> {
 init().await?;

 const BIND_ADDRESS: &str = "127.0.0.1:8000";

 let ct = SseServer::serve(BIND_ADDRESS.parse()?)
 .await?
Expand All@@ -31,6 +39,7 @@ async fn test_with_python_client() -> anyhow::Result<()> {
 let status = tokio::process::Command::new("uv")
 .arg("run")
 .arg("tests/test_with_python/client.py")
 .arg(format!("http://{BIND_ADDRESS}/sse"))
 .spawn()?
 .wait()
 .await?;
Expand All@@ -39,21 +48,61 @@ async fn test_with_python_client() -> anyhow::Result<()> {
 Ok(())
}

/// Test the SSE server in a nested Axum router.
#[tokio::test]
async fn test_nested_with_python_client() -> anyhow::Result<()> {
 init().await?;

 const BIND_ADDRESS: &str = "127.0.0.1:8001";

 // Create an SSE router
 let sse_config = SseServerConfig {
 bind: BIND_ADDRESS.parse()?,
 sse_path: "/sse".to_string(),
 post_path: "/message".to_string(),
 ct: CancellationToken::new(),
 sse_keep_alive: None,
 };

 let listener = tokio::net::TcpListener::bind(&sse_config.bind).await?;

 let (sse_server, sse_router) = SseServer::new(sse_config);
 let ct = sse_server.with_service(Calculator::default);

 let main_router = Router::new().nest("/nested", sse_router);

 let server_ct = ct.clone();
 let server = axum::serve(listener, main_router).with_graceful_shutdown(async move {
 server_ct.cancelled().await;
 tracing::info!("sse server cancelled");
 });

 tokio::spawn(async move {
 let _ = server.await;
 tracing::info!("sse server shutting down");
 });

 // Spawn the process with timeout, as failure to access the '/message' URL
 // causes the client to never exit.
 let status = timeout(
 tokio::time::Duration::from_secs(5),
 tokio::process::Command::new("uv")
 .arg("run")
 .arg("tests/test_with_python/client.py")
 .arg(format!("http://{BIND_ADDRESS}/nested/sse"))
 .spawn()?
 .wait(),
 )
 .await?;
 assert!(status?.success());
 ct.cancel();
 Ok(())
}

#[tokio::test]
async fn test_with_python_server() -> anyhow::Result<()> {
 let _ = tracing_subscriber::registry()
 .with(
 tracing_subscriber::EnvFilter::try_from_default_env()
 .unwrap_or_else(|_| "debug".to_string().into()),
 )
 .with(tracing_subscriber::fmt::layer())
 .try_init();
 tokio::process::Command::new("uv")
 .args(["pip", "install", "-r", "pyproject.toml"])
 .current_dir("tests/test_with_python")
 .spawn()?
 .wait()
 .await?;
 init().await?;

 let transport = TokioChildProcess::new(tokio::process::Command::new("uv").configure(|cmd| {
 cmd.arg("run").arg("tests/test_with_python/server.py");
 }))?;
Expand Down

8 changes: 4 additions & 4 deletions
crates/rmcp/tests/test_with_python/client.py

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -1,10 +1,10 @@
from mcp import ClientSession, StdioServerParameters, types
from mcp.client.sse import sse_client


import sys

async def run():
 async with sse_client("http://localhost:8000/sse") as (read, write):
 url = sys.argv[1]
 async with sse_client(url) as (read, write):
 async with ClientSession(
 read, write
 ) as session:
Expand All@@ -25,4 +25,4 @@ async def run():
if __name__ == "__main__":
 import asyncio

 asyncio.run(run())
 asyncio.run(run())

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

Skip to content
fix: allow SSE server router to be nested#240

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

 Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and
privacy statement. We’ll occasionally send you account related emails.

Already on GitHub?
Sign in
to your account

 Merged

jokemanfire
merged 2 commits into

from

Jun 7, 2025
 Merged


fix: allow SSE server router to be nested
#240
Show file tree
Hide file tree
 Changes from all commits
Commits

Show all changes


2 commits


Select commit
Hold shift + click to select a range
4810535

fix: allow SSE server router to be nested


swallez Jun 2, 2025
6f75ce6

chore: run cargo fmt + clippy


swallez Jun 3, 2025

File filter

Filter by extension
Filter by extension
Conversations

Failed to load comments. 
Loading
Jump to

Jump to file


Failed to load files. 
Loading
 Diff view

 Diff view


1 change: 1 addition & 0 deletions
crates/rmcp/Cargo.toml

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -151,6 +151,7 @@ path = "tests/test_tool_macros.rs"
[[test]]
name = "test_with_python"
required-features = [
 "reqwest",
 "server",
 "client",
 "transport-sse-server",
Expand Down

10 changes: 5 additions & 5 deletions
crates/rmcp/src/transport/sse_server.rs

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -1,8 +1,8 @@
use std::{collections::HashMap, io, net::SocketAddr, sync::Arc, time::Duration};

use axum::{
 Json, Router,
 extract::{Query, State},
Extension, Json, Router,
 extract::{NestedPath, Query, State},
 http::{StatusCode, request::Parts},
 response::{
 Response,
Expand DownExpand Up@@ -84,6 +84,7 @@ async fn post_event_handler(

async fn sse_handler(
 State(app): State<App>,
 nested_path: Option<Extension<NestedPath>>,
 parts: Parts,
) -> Result<Sse<impl Stream<Item = Result<Event, io::Error>>>, Response<String>> {
 let session = session_id();
Expand DownExpand Up@@ -115,12 +116,13 @@ async fn sse_handler(
 *response.status_mut() = StatusCode::INTERNAL_SERVER_ERROR;
 return Err(response);
 }
 let nested_path = nested_path.as_deref().map(NestedPath::as_str).unwrap_or("");
 let post_path = app.post_path.as_ref();
 let ping_interval = app.sse_ping_interval;
 let stream = futures::stream::once(futures::future::ok(
 Event::default()
 .event("endpoint")
 .data(format!("{post_path}?sessionId={session}")),
 .data(format!("{nested_path}{post_path}?sessionId={session}")),
 ))
 .chain(ReceiverStream::new(to_client_rx).map(|message| {
 match serde_json::to_string(&message) {
Expand DownExpand Up@@ -257,8 +259,6 @@ impl SseServer {
 Ok(sse_server)
 }

 /// Warning: This function creates a new SseServer instance with the provided configuration.
 /// `App.post_path` may be incorrect if using `Router` as an embedded router.
 pub fn new(config: SseServerConfig) -> (SseServer, Router) {
 let (app, transport_rx) = App::new(
 config.post_path.clone(),
Expand Down

85 changes: 67 additions & 18 deletions
crates/rmcp/tests/test_with_python.rs

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -1,15 +1,15 @@
use axum::Router;
use rmcp::{
 ServiceExt,
 transport::{ConfigureCommandExt, SseServer, TokioChildProcess},
 transport::{ConfigureCommandExt, SseServer, TokioChildProcess, sse_server::SseServerConfig},
};
use tokio::time::timeout;
use tokio_util::sync::CancellationToken;
use tracing_subscriber::{layer::SubscriberExt, util::SubscriberInitExt};
mod common;
use common::calculator::Calculator;

const BIND_ADDRESS: &str = "127.0.0.1:8000";

#[tokio::test]
async fn test_with_python_client() -> anyhow::Result<()> {
async fn init() -> anyhow::Result<()> {
 let _ = tracing_subscriber::registry()
 .with(
 tracing_subscriber::EnvFilter::try_from_default_env()
Expand All@@ -23,6 +23,14 @@ async fn test_with_python_client() -> anyhow::Result<()> {
 .spawn()?
 .wait()
 .await?;
 Ok(())
}

#[tokio::test]
async fn test_with_python_client() -> anyhow::Result<()> {
 init().await?;

 const BIND_ADDRESS: &str = "127.0.0.1:8000";

 let ct = SseServer::serve(BIND_ADDRESS.parse()?)
 .await?
Expand All@@ -31,6 +39,7 @@ async fn test_with_python_client() -> anyhow::Result<()> {
 let status = tokio::process::Command::new("uv")
 .arg("run")
 .arg("tests/test_with_python/client.py")
 .arg(format!("http://{BIND_ADDRESS}/sse"))
 .spawn()?
 .wait()
 .await?;
Expand All@@ -39,21 +48,61 @@ async fn test_with_python_client() -> anyhow::Result<()> {
 Ok(())
}

/// Test the SSE server in a nested Axum router.
#[tokio::test]
async fn test_nested_with_python_client() -> anyhow::Result<()> {
 init().await?;

 const BIND_ADDRESS: &str = "127.0.0.1:8001";

 // Create an SSE router
 let sse_config = SseServerConfig {
 bind: BIND_ADDRESS.parse()?,
 sse_path: "/sse".to_string(),
 post_path: "/message".to_string(),
 ct: CancellationToken::new(),
 sse_keep_alive: None,
 };

 let listener = tokio::net::TcpListener::bind(&sse_config.bind).await?;

 let (sse_server, sse_router) = SseServer::new(sse_config);
 let ct = sse_server.with_service(Calculator::default);

 let main_router = Router::new().nest("/nested", sse_router);

 let server_ct = ct.clone();
 let server = axum::serve(listener, main_router).with_graceful_shutdown(async move {
 server_ct.cancelled().await;
 tracing::info!("sse server cancelled");
 });

 tokio::spawn(async move {
 let _ = server.await;
 tracing::info!("sse server shutting down");
 });

 // Spawn the process with timeout, as failure to access the '/message' URL
 // causes the client to never exit.
 let status = timeout(
 tokio::time::Duration::from_secs(5),
 tokio::process::Command::new("uv")
 .arg("run")
 .arg("tests/test_with_python/client.py")
 .arg(format!("http://{BIND_ADDRESS}/nested/sse"))
 .spawn()?
 .wait(),
 )
 .await?;
 assert!(status?.success());
 ct.cancel();
 Ok(())
}

#[tokio::test]
async fn test_with_python_server() -> anyhow::Result<()> {
 let _ = tracing_subscriber::registry()
 .with(
 tracing_subscriber::EnvFilter::try_from_default_env()
 .unwrap_or_else(|_| "debug".to_string().into()),
 )
 .with(tracing_subscriber::fmt::layer())
 .try_init();
 tokio::process::Command::new("uv")
 .args(["pip", "install", "-r", "pyproject.toml"])
 .current_dir("tests/test_with_python")
 .spawn()?
 .wait()
 .await?;
 init().await?;

 let transport = TokioChildProcess::new(tokio::process::Command::new("uv").configure(|cmd| {
 cmd.arg("run").arg("tests/test_with_python/server.py");
 }))?;
Expand Down

8 changes: 4 additions & 4 deletions
crates/rmcp/tests/test_with_python/client.py

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -1,10 +1,10 @@
from mcp import ClientSession, StdioServerParameters, types
from mcp.client.sse import sse_client


import sys

async def run():
 async with sse_client("http://localhost:8000/sse") as (read, write):
 url = sys.argv[1]
 async with sse_client(url) as (read, write):
 async with ClientSession(
 read, write
 ) as session:
Expand All@@ -25,4 +25,4 @@ async def run():
if __name__ == "__main__":
 import asyncio

 asyncio.run(run())
 asyncio.run(run())