http: move header storage to Curl_easy from connectdata

Since the connection can be used by many independent requests (using
HTTP/2 or HTTP/3), things like user-agent and other transfer-specific
data MUST NOT be kept connection oriented as it could lead to requests
getting the wrong string for their requests. This struct data was
lingering like this due to old HTTP1 legacy thinking where it didn't
mattered..

Fixes #5566
Closes #5567

1 files changed, 16 insertions, 15 deletions

diff --git a/lib/urldata.h b/lib/urldata.h
index 1882914e0..33ec160ac 100644
--- a/lib/urldata.h
+++ b/lib/urldata.h
@@ -1003,21 +1003,6 @@ struct connectdata {
                                 well be the same we read from.
                                 CURL_SOCKET_BAD disables */
 
-  /** Dynamically allocated strings, MUST be freed before this **/
-  /** struct is killed.                                      **/
-  struct dynamically_allocated_data {
-    char *proxyuserpwd;
-    char *uagent;
-    char *accept_encoding;
-    char *userpwd;
-    char *rangeline;
-    char *ref;
-    char *host;
-    char *cookiehost;
-    char *rtsp_transport;
-    char *te; /* TE: request header */
-  } allocptr;
-
 #ifdef HAVE_GSSAPI
   BIT(sec_complete); /* if Kerberos is enabled for this connection */
   enum protection_level command_prot;
@@ -1396,6 +1381,22 @@ struct UrlState {
 #endif
   trailers_state trailers_state; /* whether we are sending trailers
                                        and what stage are we at */
+
+  /* Dynamically allocated strings, MUST be freed before this struct is
+     killed. */
+  struct dynamically_allocated_data {
+    char *proxyuserpwd;
+    char *uagent;
+    char *accept_encoding;
+    char *userpwd;
+    char *rangeline;
+    char *ref;
+    char *host;
+    char *cookiehost;
+    char *rtsp_transport;
+    char *te; /* TE: request header */
+  } aptr;
+
 #ifdef CURLDEBUG
   BIT(conncache_lock);
 #endif