MINOR: quic-be: helper quic_reuse_srv_params() function to reuse server params (0...

Implement quic_reuse_srv_params() whose role is to reuse the ALPN negotiated
during a first connection to a QUIC backend alongside its transport parameters.

diff --git a/include/haproxy/quic_conn.h b/include/haproxy/quic_conn.h
index db32934ef57050b23af668de2ed2153ebe12d611..9439bbd69510e3eed77311bebce2985f7fc6ae5f 100644 (file)
--- a/include/haproxy/quic_conn.h
+++ b/include/haproxy/quic_conn.h
@@ -82,6 +82,9 @@ void qc_idle_timer_rearm(struct quic_conn *qc, int read, int arm_ack);
 void qc_check_close_on_released_mux(struct quic_conn *qc);
 int quic_stateless_reset_token_cpy(unsigned char *pos, size_t len,
                                    const unsigned char *salt, size_t saltlen);
+int quic_reuse_srv_params(struct quic_conn *qc,
+                          const unsigned char *alpn,
+                          const struct quic_early_transport_params *etps);
 
 /* Returns true if <qc> is used on the backed side (as a client). */
 static inline int qc_is_back(const struct quic_conn *qc)

diff --git a/src/quic_conn.c b/src/quic_conn.c
index 00a84d606f00c705d64565838a47b17eb6e610af..67cbdda9cd7b788331108f0e2cbaf48ff8e4febb 100644 (file)
--- a/src/quic_conn.c
+++ b/src/quic_conn.c
@@ -284,6 +284,30 @@ int quic_set_app_ops(struct quic_conn *qc, const unsigned char *alpn, size_t alp
        return 1;
 }
 
+/* Try to reuse <alpn> ALPN and <etps> early transport parameters.
+ * Return 1 if succeeded, 0 if not.
+ */
+int quic_reuse_srv_params(struct quic_conn *qc,
+                          const unsigned char *alpn,
+                          const struct quic_early_transport_params *etps)
+{
+       int ret = 0;
+
+       TRACE_ENTER(QUIC_EV_CONN_NEW, qc);
+
+       if (!alpn || !quic_set_app_ops(qc, alpn, strlen((char *)alpn)))
+               goto err;
+
+       qc_early_transport_params_reuse(qc, &qc->tx.params, etps);
+       ret = 1;
+ leave:
+       TRACE_LEAVE(QUIC_EV_CONN_NEW, qc);
+       return ret;
+ err:
+       TRACE_DEVEL("leaving on error", QUIC_EV_CONN_NEW, qc);
+       goto leave;
+}
+
 /* Schedule a CONNECTION_CLOSE emission on <qc> if the MUX has been released
  * and all STREAM data are acknowledged. The MUX is responsible to have set
  * <qc.err> before as it is reused for the CONNECTION_CLOSE frame.