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diff --git a/pceplib/pcep_socket_comm_internals.h b/pceplib/pcep_socket_comm_internals.h
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+++ b/pceplib/pcep_socket_comm_internals.h
@@ -0,0 +1,69 @@
+/*
+ * This file is part of the PCEPlib, a PCEP protocol library.
+ *
+ * Copyright (C) 2020 Volta Networks https://voltanet.io/
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser 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 <https://www.gnu.org/licenses/>.
+ *
+ * Author : Brady Johnson <brady@voltanet.io>
+ *
+ */
+
+
+#ifndef SRC_PCEPSOCKETCOMMINTERNALS_H_
+#define SRC_PCEPSOCKETCOMMINTERNALS_H_
+
+#include <pthread.h>
+#include <stdbool.h>
+
+#include "pcep_utils_ordered_list.h"
+#include "pcep_socket_comm.h"
+
+
+typedef struct pcep_socket_comm_handle_ {
+	bool active;
+	pthread_t socket_comm_thread;
+	pthread_mutex_t socket_comm_mutex;
+	fd_set read_master_set;
+	fd_set write_master_set;
+	fd_set except_master_set;
+	/* ordered_list of socket_descriptors to read from */
+	ordered_list_handle *read_list;
+	/* ordered_list of socket_descriptors to write to */
+	ordered_list_handle *write_list;
+	ordered_list_handle *session_list;
+	int num_active_sessions;
+	void *external_infra_data;
+	ext_socket_write socket_write_func;
+	ext_socket_read socket_read_func;
+
+} pcep_socket_comm_handle;
+
+
+typedef struct pcep_socket_comm_queued_message_ {
+	const char *encoded_message;
+	int msg_length;
+	bool free_after_send;
+
+} pcep_socket_comm_queued_message;
+
+
+/* Functions implemented in pcep_socket_comm_loop.c */
+void *socket_comm_loop(void *data);
+bool comm_session_exists(pcep_socket_comm_handle *socket_comm_handle,
+			 pcep_socket_comm_session *socket_comm_session);
+bool comm_session_exists_locking(pcep_socket_comm_handle *socket_comm_handle,
+				 pcep_socket_comm_session *socket_comm_session);
+
+#endif /* SRC_PCEPSOCKETCOMMINTERNALS_H_ */