net::http::do: remove context struct

net/http/do.ha

@@ -6,36 +6,30 @@ use net::uri;
 use net;
 use os;
 
-type context = struct {
-	conn: io::handle,
-	file: bufio::bufstream,
-	buf: [os::BUFSIZ]u8,
-};
-
 // Performs an HTTP [[request]] with the given [[client]]. The request is
 // performed synchronously; this function blocks until the server has returned
 // the response status and all HTTP headers associated with the response.
 export fn do(client: *client, req: *request) (response | error) = {
-	let ctx = context { ... };
-
 	assert(req.target.scheme == "http"); // TODO: https
 	const conn = dial::dial_uri("tcp", req.target)?;
-	ctx.file = bufio::buffered(conn, [], ctx.buf);
-	bufio::setflush(&ctx.file, []);
 
-	fmt::fprintf(&ctx.file, "{} ", req.method)?;
+	let buf: [os::BUFSIZ]u8 = [0...];
+	let file = bufio::buffered(conn, [], buf);
+	bufio::setflush(&file, []);
+
+	fmt::fprintf(&file, "{} ", req.method)?;
 
 	// TODO: Support other request-targets than origin-form
 	let target = uri_origin_form(req.target);
-	uri::fmt(&ctx.file, &target)?;
+	uri::fmt(&file, &target)?;
-	fmt::fprintf(&ctx.file, " HTTP/1.1\r\n")?;
+	fmt::fprintf(&file, " HTTP/1.1\r\n")?;
 
 	// TODO: Handle Content-Length and Transfer-Encoding chunked/gzip
 	// properly
 
-	write_header(&ctx.file, &req.header)?;
+	write_header(&file, &req.header)?;
-	fmt::fprintf(&ctx.file, "\r\n")?;
+	fmt::fprintf(&file, "\r\n")?;
-	bufio::flush(&ctx.file)?;
+	bufio::flush(&file)?;
 
 	match (req.body) {
 	case void =>