From a93b7621100c39503936260beeecab50b8a367f129e50c9b25f143d82bed10b8 Mon Sep 17 00:00:00 2001
From: ADAM David Alan Martin <adam@recursive.engineer>
Date: Sat, 10 Jan 2026 03:04:51 -0500
Subject: [PATCH] `Clients` list in file handler is now a vector.

---
 dpi/file.cc | 19 +++++++------------
 1 file changed, 7 insertions(+), 12 deletions(-)

diff --git a/dpi/file.cc b/dpi/file.cc
index 191e158..31a401a 100644
--- a/dpi/file.cc
+++ b/dpi/file.cc
@@ -116,7 +116,7 @@ static const char *File_content_type(const char *filename);
 static int DPIBYE = 0;
 static int OLD_STYLE = 0;
 /* A list for the clients we are serving */
-static Dlist *Clients;
+static std::vector< std::unique_ptr< ClientInfo > > Clients;
 /* Set of filedescriptors we're working on */
 fd_set read_set, write_set;
 
@@ -894,9 +894,9 @@ static ClientInfo *File_add_client(int sock_fd)
    new_client->flags = FILE_READ;
    new_client->old_style = OLD_STYLE;
 
-   dList_append(Clients, new_client.get());
+   Clients.push_back( std::move( new_client ) );
 
-   return new_client.release();
+   return Clients.back().get();
 }
 
 /*
@@ -904,9 +904,7 @@ static ClientInfo *File_add_client(int sock_fd)
  */
 static void File_remove_client(ClientInfo *client)
 {
-   dList_remove(Clients, (void *)client);
-
-   delete client;
+	Clients.erase( std::find_if( begin( Clients ), end( Clients ), [client] ( const auto &c ) { return client == c.get(); } ) );
 }
 
 ClientInfo::~ClientInfo()
@@ -996,7 +994,7 @@ static void File_serve_clients(void)
    int i, f_read, f_write;
    ClientInfo *client;
 
-   for (i = 0; (client = reinterpret_cast< ClientInfo * >( dList_nth_data(Clients, i) )); ++i) {
+   for (i = 0; i < Clients.size() and ( client = Clients.at( i ).get() ); ++i) {
       f_read = FD_ISSET(client->sh->fd_in, &read_set);
       f_write = FD_ISSET(client->sh->fd_out, &write_set);
       if (!f_read && !f_write)
@@ -1025,13 +1023,13 @@ static int File_check_fds(uint_t seconds)
    FD_ZERO (&read_set);
    FD_ZERO (&write_set);
    FD_SET (STDIN_FILENO, &read_set);
-   for (i = 0; (client = reinterpret_cast< ClientInfo * >( dList_nth_data(Clients, i) )); ++i) {
+   for (i = 0; i < Clients.size() and ( client = Clients.at( i ).get() ); ++i) {
       if (client->flags & FILE_READ)
          FD_SET (client->sh->fd_in, &read_set);
       if (client->flags & FILE_WRITE)
          FD_SET (client->sh->fd_out, &write_set);
    }
-   _MSG("Watching %d fds\n", dList_length(Clients) + 1);
+   _MSG("Watching %d fds\n", Clients.size() + 1);
 
    /* Initialize the timeout data structure. */
    timeout.tv_sec = seconds;
@@ -1080,9 +1078,6 @@ int main(void)
    /* Set STDIN socket nonblocking (to ensure accept() never blocks) */
    fcntl(STDIN_FILENO, F_SETFL, O_NONBLOCK | fcntl(STDIN_FILENO, F_GETFL));
 
-   /* initialize Clients list */
-   Clients = dList_new(512);
-
    /* some OSes may need this... */
    sin_sz = sizeof(sin);