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Fix -ui-dev serving 502 for every page #5

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Fix -ui-dev serving 502 for every page #5

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12 changes: 8 additions & 4 deletions libs/services/web_server.go
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Original file line number Diff line number Diff line change
Expand Up @@ -86,10 +86,14 @@ func (s *WebServer) SetupRoutes(r *gin.Engine) error {
s.logger.LogAttrs(context.Background(), slog.LevelInfo, "setting up HTTP server routes to proxy to UI dev server")

target, _ := url.Parse("http://localhost:4199")
proxy := httputil.NewSingleHostReverseProxy(target)
proxy.Rewrite = func(pr *httputil.ProxyRequest) {
pr.SetURL(target)
pr.Out.Host = target.Host
// Built with Rewrite alone rather than from NewSingleHostReverseProxy:
// that constructor sets Director, and ReverseProxy refuses to serve
// anything when both are set, which turned every page into a 502.
proxy := &httputil.ReverseProxy{
Rewrite: func(pr *httputil.ProxyRequest) {
pr.SetURL(target)
pr.Out.Host = target.Host
},
}

r.NoRoute(func(c *gin.Context) {
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