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fix: use reqwest for CDP port discovery instead of broken hand-rolled HTTP client (#619)

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reqwest_get_string() was hand-rolling HTTP/1.1 over raw TCP despite reqwest
being an existing dependency. The hand-rolled implementation had two bugs:

1. URL path parsing: url.find('/') matched the first '/' in 'http://',
   producing path '//127.0.0.1:9222/json/version' instead of '/json/version'

2. read_to_end() hangs: Chrome's DevTools HTTP server ignores Connection: close
   and keeps the socket open, so read_to_end() waits for EOF that never comes

This caused 'agent-browser --cdp <port>' to always timeout when AGENT_BROWSER_NATIVE=1.

Fix: replace 49 lines of broken TCP code with reqwest::get(), which was
already in Cargo.toml.
This commit is contained in:
Li Yang
2026-03-04 16:32:01 -06:00
committed by GitHub
parent 139dd0ec5a
commit de5ea1d8cf
1 changed files with 2 additions and 49 deletions
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cli/src/native/cdp/chrome.rs
+2 -49
View File
@@ -381,55 +381,8 @@ pub async fn discover_cdp_url(port: u16) -> Result<String, String> {
}
async fn reqwest_get_string(url: &str) -> Result<String, String> {
let client = tokio::net::TcpStream::connect(
url.strip_prefix("http://")
.unwrap_or(url)
.split('/')
.next()
.unwrap_or("127.0.0.1:9222"),
)
.await
.map_err(|e| e.to_string())?;
let path = url
.find('/')
.and_then(|i| url[i..].find('/').map(|j| &url[i + j..]))
.unwrap_or("/json/version");
let host = url
.strip_prefix("http://")
.unwrap_or(url)
.split('/')
.next()
.unwrap_or("127.0.0.1");
let request = format!(
"GET {} HTTP/1.1\r\nHost: {}\r\nConnection: close\r\n\r\n",
path, host
);
use tokio::io::{AsyncReadExt, AsyncWriteExt};
let mut client = client;
client
.write_all(request.as_bytes())
.await
.map_err(|e| e.to_string())?;
let mut response = Vec::new();
client
.read_to_end(&mut response)
.await
.map_err(|e| e.to_string())?;
let response_str = String::from_utf8_lossy(&response);
let body = response_str
.split("\r\n\r\n")
.nth(1)
.unwrap_or("")
.to_string();
Ok(body)
let resp = reqwest::get(url).await.map_err(|e| e.to_string())?;
resp.text().await.map_err(|e| e.to_string())
}
pub fn read_devtools_active_port(user_data_dir: &Path) -> Option<(u16, String)> {