Starting to add S1AP pcap to EPC.

srsepc/hdr/mme/s1ap.h

@@ -31,6 +31,7 @@
 #include "srslte/asn1/liblte_mme.h"
 #include "srslte/common/common.h"
 #include "srslte/common/log.h"
+#include "srslte/common/s1ap_pcap.h"
 
 #include <strings.h>
 #include <arpa/inet.h>
@@ -125,6 +126,9 @@ private:
 
   //FIXME the GTP-C should be moved to the MME class, when the packaging of GTP-C messages is done.
   mme_gtpc *m_mme_gtpc;
+
+  //PCAP
+  srslte::s1ap_pcap m_pcap;
 };
 
 inline uint32_t

srsepc/src/mme/s1ap.cc

@@ -99,6 +99,8 @@ s1ap::init(s1ap_args_t s1ap_args, srslte::log_filter *s1ap_log, hss_interface_s1
   //Initialize S1-MME
   m_s1mme = enb_listen();
 
+  //Init PCAP
+  m_pcap.open("/tmp/epc.pcap");
   m_s1ap_log->info("S1AP Initialized\n");
   return 0;
 }
@@ -130,6 +132,9 @@ s1ap::stop()
   s1ap_mngmt_proc::cleanup();
   s1ap_nas_transport::cleanup();
   s1ap_ctx_mngmt_proc::cleanup();
+
+  //PCAP
+  m_pcap.close();
   return;
 }
 
@@ -208,6 +213,8 @@ s1ap::handle_s1ap_rx_pdu(srslte::byte_buffer_t *pdu, struct sctp_sndrcvinfo *enb
     return false;
   }
 
+  m_pcap.write_s1ap(pdu->msg,pdu->N_bytes);
+
   switch(rx_pdu.choice_type) {
   case LIBLTE_S1AP_S1AP_PDU_CHOICE_INITIATINGMESSAGE:
     m_s1ap_log->info("Received initiating PDU\n");