diff --git a/Sources/WebSocketKit/WebSocket+Connect.swift b/Sources/WebSocketKit/WebSocket+Connect.swift
index 5fe0fed..474ac8c 100644
--- a/Sources/WebSocketKit/WebSocket+Connect.swift
+++ b/Sources/WebSocketKit/WebSocket+Connect.swift
@@ -193,6 +193,7 @@ extension WebSocket {
             proxyPort: proxyPort,
             proxyHeaders: proxyHeaders,
             proxyConnectDeadline: proxyConnectDeadline,
+            configuration: configuration,
             on: eventLoopGroup,
             onUpgrade: onUpgrade
         )
diff --git a/Sources/WebSocketKit/WebSocketClient.swift b/Sources/WebSocketKit/WebSocketClient.swift
index e952190..389dc9f 100644
--- a/Sources/WebSocketKit/WebSocketClient.swift
+++ b/Sources/WebSocketKit/WebSocketClient.swift
@@ -116,11 +116,14 @@ public final class WebSocketClient: Sendable {
                     uri = path
                 } else {
                     let relativePath = path.hasPrefix("/") ? path : "/" + path
-                    let port = proxyPort.map { ":\($0)" } ?? ""
-                    uri = "\(scheme)://\(host)\(relativePath)\(port)"
-
+                    // ws: use absolute-form (full URI) for direct proxy connection;
+                    // wss: use origin-form (path only) after CONNECT tunnel is established per RFC 7230
                     if scheme == "ws" {
+                        let port = proxyPort.map { ":\($0)" } ?? ""
+                        uri = "\(scheme)://\(host)\(port)\(relativePath)"
                         upgradeRequestHeaders.add(contentsOf: proxyHeaders)
+                    } else {
+                        uri = relativePath
                     }
                 }
 
diff --git a/Tests/WebSocketKitTests/WebSocketKitTests.swift b/Tests/WebSocketKitTests/WebSocketKitTests.swift
index 4be932e..0ebe426 100644
--- a/Tests/WebSocketKitTests/WebSocketKitTests.swift
+++ b/Tests/WebSocketKitTests/WebSocketKitTests.swift
@@ -348,7 +348,7 @@ final class WebSocketKitTests: XCTestCase {
 
         let localWebsocketBin: WebsocketBin
         let verifyProxyHead = { @Sendable (ctx: ChannelHandlerContext, requestHead: HTTPRequestHead) in
-            XCTAssertEqual(requestHead.uri, "ws://apple.com/:\(ctx.localAddress!.port!)")
+            XCTAssertEqual(requestHead.uri, "ws://apple.com:\(ctx.localAddress!.port!)/")
             XCTAssertEqual(requestHead.headers.first(name: "Host"), "apple.com")
         }
         localWebsocketBin = WebsocketBin(