Create routines for destroying RTP readers/writers

The RTP connection should be destroyed by calling context->destroy_*
functions to ensure that the session is completely destroyed.

These functions will call the writer's/reader's destructor, close the
socket, release all common resources, remove them from the global
hashmap and send RTCP BYE message to all other participants

src/conn.cc

@@ -1,5 +1,6 @@
 #ifdef __linux__
 #include <arpa/inet.h>
+#include <unistd.h>
 #endif
 #include <cstring>
 #include <iostream>
@@ -20,6 +21,15 @@ kvz_rtp::connection::connection(bool reader):
 
 kvz_rtp::connection::~connection()
 {
+    /* this is going to cause problems if config was allocated from stack... */
+    if (config_)
+        delete config_;
+
+#ifdef __linux__
+    close(socket_);
+#else
+    /* TODO: close socket a la windows */
+#endif
 }
 
 void kvz_rtp::connection::set_payload(rtp_format_t fmt)

src/lib.cc

@@ -91,3 +91,19 @@ kvz_rtp::writer *kvz_rtp::context::create_writer(std::string dstAddr, int dstPor
     writer->set_payload(fmt);
     return writer;
 }
+
+rtp_error_t kvz_rtp::context::destroy_writer(kvz_rtp::writer *writer)
+{
+    conns_.erase(writer->get_ssrc());
+
+    /* TODO: rtcp bye */
+    delete writer;
+}
+
+rtp_error_t kvz_rtp::context::destroy_reader(kvz_rtp::reader *reader)
+{
+    conns_.erase(reader->get_ssrc());
+
+    /* TODO: rtcp bye */
+    delete reader;
+}

src/lib.hh

@@ -27,6 +27,11 @@ namespace kvz_rtp {
         kvz_rtp::writer *create_writer(std::string dst_addr, int dst_port, int src_port);
         kvz_rtp::writer *create_writer(std::string dst_addr, int dst_port, int src_port, rtp_format_t fmt);
 
+        /* call reader/writer-specific destroy functions, send an RTCP BYE message
+         * and remove the connection from conns_ map */
+        rtp_error_t destroy_writer(kvz_rtp::writer *writer);
+        rtp_error_t destroy_reader(kvz_rtp::reader *reader);
+
     private:
         std::map<uint32_t, connection *> conns_;
     };