ngtcp2: remove fprintf() calls

- convert some of them to H3BUF() calls to infof()
- remove some of them completely
- made DEBUG_HTTP3 defined only if CURLDEBUG is set for now

Closes #4421

lib/vquic/ngtcp2.c

@@ -43,7 +43,9 @@
 #include "memdebug.h"
 
 /* #define DEBUG_NGTCP2 */
+#ifdef CURLDEBUG
 #define DEBUG_HTTP3
+#endif
 #ifdef DEBUG_HTTP3
 #define H3BUGF(x) x
 #else
@@ -204,7 +206,7 @@ static int quic_add_handshake_data(SSL *ssl, OSSL_ENCRYPTION_LEVEL ossl_level,
       qs->qconn, level, (uint8_t *)(&crypto_data->buf[crypto_data->len] - len),
       len);
   if(rv) {
-    fprintf(stderr, "write_client_handshake failed\n");
+    H3BUGF(fprintf(stderr, "write_client_handshake failed\n"));
   }
   assert(0 == rv);
 
@@ -597,12 +599,11 @@ CURLcode Curl_quic_connect(struct connectdata *conn,
 
   ngtcp2_conn_get_local_transport_params(qs->qconn, &params);
   nwrite = ngtcp2_encode_transport_params(
-      paramsbuf, sizeof(paramsbuf), NGTCP2_TRANSPORT_PARAMS_TYPE_CLIENT_HELLO,
-      &params);
+    paramsbuf, sizeof(paramsbuf), NGTCP2_TRANSPORT_PARAMS_TYPE_CLIENT_HELLO,
+    &params);
   if(nwrite < 0) {
-    fprintf(stderr, "ngtcp2_encode_transport_params: %s\n",
-            ngtcp2_strerror((int)nwrite));
-
+    failf(data, "ngtcp2_encode_transport_params: %s\n",
+          ngtcp2_strerror((int)nwrite));
     return CURLE_FAILED_INIT;
   }
 
@@ -699,7 +700,7 @@ static int cb_h3_stream_close(nghttp3_conn *conn, int64_t stream_id,
   (void)stream_id;
   (void)app_error_code;
   (void)user_data;
-  fprintf(stderr, "cb_h3_stream_close CALLED\n");
+  H3BUGF(infof(data, "cb_h3_stream_close CALLED\n"));
 
   stream->closed = TRUE;
   Curl_expire(data, 0, EXPIRE_QUIC);
@@ -715,7 +716,7 @@ static int cb_h3_recv_data(nghttp3_conn *conn, int64_t stream_id,
   struct Curl_easy *data = stream_user_data;
   struct HTTP *stream = data->req.protop;
   (void)conn;
-  fprintf(stderr, "cb_h3_recv_data CALLED with %d bytes\n", buflen);
+  H3BUGF(infof(data, "cb_h3_recv_data CALLED with %d bytes\n", buflen));
 
   /* TODO: this needs to be handled properly */
   DEBUGASSERT(buflen <= stream->len);
@@ -749,7 +750,6 @@ static int cb_h3_deferred_consume(nghttp3_conn *conn, int64_t stream_id,
   struct quicsocket *qs = user_data;
   (void)conn;
   (void)stream_user_data;
-  fprintf(stderr, "cb_h3_deferred_consume CALLED\n");
 
   ngtcp2_conn_extend_max_stream_offset(qs->qconn, stream_id, consumed);
   ngtcp2_conn_extend_max_offset(qs->qconn, consumed);
@@ -818,8 +818,6 @@ static int cb_h3_recv_header(nghttp3_conn *conn, int64_t stream_id,
   (void)flags;
   (void)user_data;
 
-  fprintf(stderr, "cb_h3_recv_header called!\n");
-
   if(h3name.len == sizeof(":status") - 1 &&
      !memcmp(":status", h3name.base, h3name.len)) {
     int status = decode_status_code(h3val.base, h3val.len);
@@ -849,7 +847,6 @@ static int cb_h3_send_stop_sending(nghttp3_conn *conn, int64_t stream_id,
   (void)app_error_code;
   (void)user_data;
   (void)stream_user_data;
-  fprintf(stderr, "cb_h3_send_stop_sending CALLED\n");
   return 0;
 }
 
@@ -947,9 +944,6 @@ static ssize_t ngh3_stream_recv(struct connectdata *conn,
   struct HTTP *stream = conn->data->req.protop;
   struct quicsocket *qs = conn->quic;
 
-  fprintf(stderr, "ngh3_stream_recv CALLED (easy %p, socket %d)\n",
-          conn->data, sockfd);
-
   if(!stream->memlen) {
     /* remember where to store incoming data for this stream and how big the
        buffer is */
@@ -1003,8 +997,9 @@ static int cb_h3_acked_stream_data(nghttp3_conn *conn, int64_t stream_id,
 
   if(!data->set.postfields) {
     stream->h3out->used -= datalen;
-    fprintf(stderr, "cb_h3_acked_stream_data, %zd bytes, %zd left unacked\n",
-            datalen, stream->h3out->used);
+    H3BUGF(infof(data,
+                 "cb_h3_acked_stream_data, %zd bytes, %zd left unacked\n",
+                 datalen, stream->h3out->used));
     DEBUGASSERT(stream->h3out->used < H3_SEND_SIZE);
   }
   return 0;
@@ -1057,9 +1052,9 @@ static ssize_t cb_h3_readfunction(nghttp3_conn *conn, int64_t stream_id,
       if(!stream->upload_left)
         *pflags = NGHTTP3_DATA_FLAG_EOF;
     }
-    fprintf(stderr, "cb_h3_readfunction %zd bytes%s (at %zd unacked)\n",
-            nread, *pflags == NGHTTP3_DATA_FLAG_EOF?" EOF":"",
-            out->used);
+    H3BUGF(infof(data, "cb_h3_readfunction %zd bytes%s (at %zd unacked)\n",
+                 nread, *pflags == NGHTTP3_DATA_FLAG_EOF?" EOF":"",
+                 out->used));
   }
   if(stream->upload_done && !stream->upload_len &&
      (stream->upload_left <= 0)) {
@@ -1333,7 +1328,8 @@ static ssize_t ngh3_stream_send(struct connectdata *conn,
     sent = len;
   }
   else {
-    fprintf(stderr, "ngh3_stream_send() wants to send %zd bytes\n", len);
+    H3BUGF(infof(conn->data, "ngh3_stream_send() wants to send %zd bytes\n",
+                 len));
     if(!stream->upload_len) {
       stream->upload_mem = mem;
       stream->upload_len = len;
@@ -1590,8 +1586,6 @@ CURLcode Curl_quic_done_sending(struct connectdata *conn)
     /* only for HTTP/3 transfers */
     struct HTTP *stream = conn->data->req.protop;
     struct quicsocket *qs = conn->quic;
-    fprintf(stderr, "!!! Curl_quic_done_sending stream %zu\n",
-            stream->stream3_id);
     stream->upload_done = TRUE;
     (void)nghttp3_conn_resume_stream(qs->h3conn, stream->stream3_id);
   }