*: more updates to prepend the correct API path

examples/app/main.go

@@ -16,6 +16,7 @@ import (
 	"net/http"
 	"net/url"
 	"os"
+	"path"
 	"strings"
 	"time"
 
@@ -181,7 +182,7 @@ func NewClientHandler(c *oidc.Client, issuer string, cbURL url.URL) http.Handler
 	}
 
 	resendURL := *issuerURL
-	resendURL.Path = "/resend-verify-email"
+	resendURL.Path = path.Join(resendURL.Path, "/resend-verify-email")
 
 	mux.HandleFunc("/resend", handleResendFunc(c, *issuerURL, resendURL, cbURL))
 	return mux

server/register.go

@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"net/http"
 	"net/url"
+	"path"
 	"strings"
 
 	"github.com/coreos/dex/connector"
@@ -336,7 +337,7 @@ func getConnectorForUserByEmail(ur user.UserRepo, email string) (string, error)
 func newLoginURLFromSession(issuer url.URL, ses *session.Session, register bool, connectorFilter []string, msgCode string) *url.URL {
 	loginURL := issuer
 	v := loginURL.Query()
-	loginURL.Path = httpPathAuth
+	loginURL.Path = path.Join(loginURL.Path, httpPathAuth)
 	v.Set("redirect_uri", ses.RedirectURL.String())
 	v.Set("state", ses.ClientState)
 	v.Set("client_id", ses.ClientID)

server/server.go

@@ -8,6 +8,7 @@ import (
 	"net/url"
 	"path"
 	"sort"
+	"strings"
 	"time"
 
 	"github.com/coreos/go-oidc/jose"
@@ -215,7 +216,13 @@ func (s *Server) HTTPHandler() http.Handler {
 	clock := clockwork.NewRealClock()
 	mux := http.NewServeMux()
 	handle := func(urlPath string, h http.Handler) {
-		mux.Handle(path.Join(s.IssuerURL.Path, urlPath), h)
+		p := path.Join(s.IssuerURL.Path, urlPath)
+		// path.Join always trims trailing slashes (https://play.golang.org/p/GRr0jDd9P7).
+		// If path being registered has a trailing slash, add it back on.
+		if strings.HasSuffix(urlPath, "/") {
+			p = p + "/"
+		}
+		mux.Handle(p, h)
 	}
 	handleFunc := func(urlPath string, hf http.HandlerFunc) {
 		handle(urlPath, hf)
@@ -277,7 +284,7 @@ func (s *Server) HTTPHandler() http.Handler {
 		}
 		// NOTE(ericchiang): This path MUST end in a "/" in order to indicate a
 		// path prefix rather than an absolute path.
-		mux.Handle(path.Join(httpPathAuth, idpc.ID())+"/", idpc.Handler(*errorURL))
+		handle(path.Join(httpPathAuth, idpc.ID())+"/", idpc.Handler(*errorURL))
 	}
 
 	apiBasePath := path.Join(httpPathAPI, APIVersion)

static/html/reset-password.html

@@ -15,7 +15,7 @@
       {{ end }}
     {{ else }}
       <h2 class="heading">Reset your password</h2>
-      <form onsubmit="return validate();" id="resetPasswordForm" method="POST" action="/reset-password">
+	  <form onsubmit="return validate();" id="resetPasswordForm" method="POST" action="{{ "/reset-password" | absPath }}">
         <div class="form-row">
           <div class="input-desc">
             <label for="password">New Password</label>