fix: use sips scheme in From/Contact when forwarding to a sips Request-URI

RFC 3261 8.1.1.8 requires a SIPS Contact when the Request-URI is SIPS. The forward path (dial verb to a sip target) always defaulted to sip:. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-04 02:04:19 +00:00 · 2026-10-01 23:58:47 -04:00
1 changed files with 4 additions and 0 deletions
@@ -505,17 +505,21 @@ class CallSession extends Emitter {
        }
        else {
          const uri = parseUri(this.req.uri);
+          /* RFC 3261 8.1.1.8: a sips Request-URI requires a sips Contact */
+          const scheme = uri.scheme === 'sips' ? 'sips' : 'sip';
          hdrs = {
            ...hdrs,
            'From': createBLegFromHeader({
              logger: this.logger,
              req: this.req,
+              scheme,
              transport: uri.params.transport,
              ...(private_network && {host: this.privateSipAddress})
            }),
            'Contact': createBLegFromHeader({
              logger: this.logger,
              req: this.req,
+              scheme,
              transport: uri.params.transport,
              ...(private_network && {host: this.privateSipAddress})
            })