Changes MCP_HOST set by toolhive to 0.0.0.0

aponcedeleonch · aponcedeleonch · commit 55a719fcb518 · 2025-07-17T13:46:28.000+03:00
Bind MCP_HOST to all interfaces by default so that the mcp server
in the container is reachable from the host
diff --git a/pkg/transport/http.go b/pkg/transport/http.go
@@ -19,7 +19,8 @@ const (
 	// LocalhostName is the standard hostname for localhost
 	LocalhostName = "localhost"
 	// LocalhostIPv4 is the standard IPv4 address for localhost
-	LocalhostIPv4 = "127.0.0.1"
+	// We use 0.0.0.0 instead of 127.0.0.1 because 127.0.0.1 is not accessible from the host
+	LocalhostIPv4 = "0.0.0.0"
 )
 
 // HTTPTransport implements the Transport interface using Server-Sent/Streamable Events.

Original file line number	Diff line number	Diff line change
`@@ -19,7 +19,8 @@ const (`
`19`	`19`	`// LocalhostName is the standard hostname for localhost`
`20`	`20`	`LocalhostName = "localhost"`
`21`	`21`	`// LocalhostIPv4 is the standard IPv4 address for localhost`
`22`		`- LocalhostIPv4 = "127.0.0.1"`
	`22`	`+ // We use 0.0.0.0 instead of 127.0.0.1 because 127.0.0.1 is not accessible from the host`
	`23`	`+ LocalhostIPv4 = "0.0.0.0"`
`23`	`24`	`)`
`24`	`25`
`25`	`26`	`// HTTPTransport implements the Transport interface using Server-Sent/Streamable Events.`