1 files changed, 87 insertions, 0 deletions
diff --git a/src/libmdsclient/comm.h b/src/libmdsclient/comm.h
new file mode 100644
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+++ b/src/libmdsclient/comm.h
@@ -0,0 +1,87 @@
+/**
+ * mds — A micro-display server
+ * Copyright © 2014, 2015  Mattias Andrée (maandree@member.fsf.org)
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#ifndef MDS_LIBMDSCLIENT_COMM_H
+#define MDS_LIBMDSCLIENT_COMM_H
+
+
+#include <stdint.h>
+#include <stddef.h>
+
+
+
+/**
+ * A connection to the display server
+ */
+typedef struct libmds_connection
+{
+  /**
+   * The file descriptor of the socket
+   * connected to the display server,
+   * -1 if not connected
+   */
+  int socket_fd;
+  
+  /**
+   * The ID of the _previous_ message
+   */
+  uint32_t message_id;
+  
+  /**
+   * The client ID, `NULL` if anonymous
+   */
+  char* client_id;
+  
+} libmds_connection_t;
+
+
+/**
+ * Initialise a connection descriptor with the the default values
+ * 
+ * @param  this  The connection descriptor
+ */
+__attribute__((nonnull))
+void libmds_connection_initialise(libmds_connection_t* restrict this);
+
+/**
+ * Allocate and initialise a connection descriptor
+ * 
+ * @return  The connection descriptor, `NULL` on error
+ * 
+ * @throws  ENOMEM  Out of memory, Possibly, the process hit the RLIMIT_AS or
+ *                  RLIMIT_DATA limit described in getrlimit(2).
+ */
+libmds_connection_t* libmds_connection_create(void);
+
+/**
+ * Release all resources held by a connection descriptor
+ * 
+ * @param  this  The connection descriptor, may be `NULL`
+ */
+void libmds_connection_destroy(libmds_connection_t* restrict this);
+
+/**
+ * Release all resources held by a connection descriptor,
+ * and release the allocation of the connection descriptor
+ * 
+ * @param  this  The connection descriptor, may be `NULL`
+ */
+void libmds_connection_free(libmds_connection_t* restrict this);
+
+
+#endif
+