lib: introduce Curl_peer

`struct Curl_peer` keeps information about a communication endpoint
together. It will replace `conn->host` and `conn->conn_to_host` and
proxyinfo host. It will also become part of `struct ssl_peer`.

It has a reference counter, so an instance can be shared between
connections and filters.

Elminiates `conn->host` and `conn->connect_to_host`, used in the
proxyinfo structures. Passed to DNS resolution and socks filters, etc.

Pass peer to http proxy and socks tunnel filters. Use peer in dns filter
and resolving. Make `Curl_peer` a member in the `struct ssl_peer`.

Add `docs/internals/PEERS.md` for documentation.

Closes #21472
This commit is contained in:
Stefan Eissing 2026-05-05 12:58:22 +02:00 committed by Daniel Stenberg
parent 9c9a4f3eab
commit bc40e09f63
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67 changed files with 1902 additions and 1295 deletions

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@ -35,24 +35,19 @@ enum Curl_proxy_use {
HEADER_CONNECT /* sending CONNECT to a proxy */
};
void Curl_http_proxy_get_destination(struct Curl_cfilter *cf,
const char **phostname,
uint16_t *pport, bool *pipv6_ip);
CURLcode Curl_http_proxy_create_CONNECT(struct httpreq **preq,
struct Curl_cfilter *cf,
struct Curl_easy *data,
int http_version_major);
struct Curl_peer *dest,
int httpversion);
/* Default proxy timeout in milliseconds */
#define PROXY_TIMEOUT (3600 * 1000)
CURLcode Curl_cf_http_proxy_query(struct Curl_cfilter *cf,
struct Curl_easy *data,
int query, int *pres1, void *pres2);
CURLcode Curl_cf_http_proxy_insert_after(struct Curl_cfilter *cf_at,
struct Curl_easy *data);
struct Curl_easy *data,
struct Curl_peer *dest,
uint8_t proxytype);
extern struct Curl_cftype Curl_cft_http_proxy;