diff --git a/library/ssl_cli.c b/library/ssl_cli.c
index d6b429d..8335f00 100644
--- a/library/ssl_cli.c
+++ b/library/ssl_cli.c
@@ -766,7 +766,8 @@
 
     *olen = 0;
 
-    if( (ssl->conf->dtls_srtp_profile_list == NULL)  || (ssl->conf->dtls_srtp_profile_list_len == 0) )
+    if( (ssl->conf->dtls_srtp_profile_list == NULL) ||
+        (ssl->conf->dtls_srtp_profile_list_len == 0) )
     {
         return;
     }
@@ -785,52 +786,69 @@
      * } UseSRTPData;
 
      * SRTPProtectionProfile SRTPProtectionProfiles<2..2^16-1>;
-     *
      */
     if( ssl->conf->dtls_srtp_mki_support == MBEDTLS_SSL_DTLS_SRTP_MKI_SUPPORTED &&
-                ssl->dtls_srtp_info.mki_len != 0 )
+        ssl->dtls_srtp_info.mki_len != 0 )
     {
         mki_len = ssl->dtls_srtp_info.mki_len;
     }
-    /* Extension length = 2bytes for profiles length, ssl->conf->dtls_srtp_profile_list_len*2 (each profile is 2 bytes length ) + 1 byte for srtp_mki vector length and the mki_len value */
-    *p++ = (unsigned char)( ( ( 2 + 2*(ssl->conf->dtls_srtp_profile_list_len) + 1 + mki_len ) >> 8 ) & 0xFF );
-    *p++ = (unsigned char)( ( ( 2 + 2*(ssl->conf->dtls_srtp_profile_list_len) + 1 + mki_len )      ) & 0xFF );
-
+    /* Extension length = 2 bytes for profiles length,
+     *                    ssl->conf->dtls_srtp_profile_list_len * 2 (each profile is 2 bytes length ),
+     *                    1 byte for srtp_mki vector length and the mki_len value
+     */
+    *p++ = (unsigned char)( ( ( 2 + 2 * ( ssl->conf->dtls_srtp_profile_list_len )
+                                + 1 + mki_len ) >> 8 ) & 0xFF );
+    *p++ = (unsigned char)( ( ( 2 + 2 * (ssl->conf->dtls_srtp_profile_list_len )
+                                + 1 + mki_len )      ) & 0xFF );
 
     /* protection profile length: 2*(ssl->conf->dtls_srtp_profile_list_len) */
-    *p++ = (unsigned char)( ( ( 2*(ssl->conf->dtls_srtp_profile_list_len) ) >> 8 ) & 0xFF );
-    *p++ = (unsigned char)( ( 2*(ssl->conf->dtls_srtp_profile_list_len) ) & 0xFF );
+    *p++ = (unsigned char)( ( ( 2 * (ssl->conf->dtls_srtp_profile_list_len) )
+                              >> 8 ) & 0xFF );
+    *p++ = (unsigned char)( ( 2 * (ssl->conf->dtls_srtp_profile_list_len) )
+                            & 0xFF );
 
-    for( protection_profiles_index=0; protection_profiles_index < ssl->conf->dtls_srtp_profile_list_len; protection_profiles_index++ )
+    for( protection_profiles_index=0;
+         protection_profiles_index < ssl->conf->dtls_srtp_profile_list_len;
+         protection_profiles_index++ )
     {
         switch (ssl->conf->dtls_srtp_profile_list[protection_profiles_index]) {
             case MBEDTLS_SRTP_AES128_CM_HMAC_SHA1_80:
                 MBEDTLS_SSL_DEBUG_MSG( 3, ( "ssl_write_use_srtp_ext, add profile: %04x",
                         MBEDTLS_SRTP_AES128_CM_HMAC_SHA1_80_IANA_VALUE ) );
-                *p++ = ( ( ( MBEDTLS_SRTP_AES128_CM_HMAC_SHA1_80_IANA_VALUE ) >> 8 ) & 0xFF);
-                *p++ = ( ( MBEDTLS_SRTP_AES128_CM_HMAC_SHA1_80_IANA_VALUE ) & 0xFF);
+                *p++ = ( ( ( MBEDTLS_SRTP_AES128_CM_HMAC_SHA1_80_IANA_VALUE )
+                            >> 8 ) & 0xFF );
+                *p++ = ( ( MBEDTLS_SRTP_AES128_CM_HMAC_SHA1_80_IANA_VALUE )
+                          & 0xFF );
                 break;
             case MBEDTLS_SRTP_AES128_CM_HMAC_SHA1_32:
                 MBEDTLS_SSL_DEBUG_MSG( 3, ( "ssl_write_use_srtp_ext, add profile: %04x",
                         MBEDTLS_SRTP_AES128_CM_HMAC_SHA1_32_IANA_VALUE ) );
-                *p++ = ( ( ( MBEDTLS_SRTP_AES128_CM_HMAC_SHA1_32_IANA_VALUE ) >> 8 ) & 0xFF);
-                *p++ = ( ( MBEDTLS_SRTP_AES128_CM_HMAC_SHA1_32_IANA_VALUE ) & 0xFF);
+                *p++ = ( ( ( MBEDTLS_SRTP_AES128_CM_HMAC_SHA1_32_IANA_VALUE )
+                            >> 8 ) & 0xFF );
+                *p++ = ( ( MBEDTLS_SRTP_AES128_CM_HMAC_SHA1_32_IANA_VALUE )
+                         & 0xFF );
                 break;
             case MBEDTLS_SRTP_NULL_HMAC_SHA1_80:
                 MBEDTLS_SSL_DEBUG_MSG( 3, ( "ssl_write_use_srtp_ext, add profile: %04x",
                         MBEDTLS_SRTP_NULL_HMAC_SHA1_80_IANA_VALUE ) );
-                *p++ = ( ( ( MBEDTLS_SRTP_NULL_HMAC_SHA1_80_IANA_VALUE ) >> 8 ) & 0xFF);
-                *p++ = ( ( MBEDTLS_SRTP_NULL_HMAC_SHA1_80_IANA_VALUE ) & 0xFF);
+                *p++ = ( ( ( MBEDTLS_SRTP_NULL_HMAC_SHA1_80_IANA_VALUE ) >> 8 )
+                         & 0xFF ) ;
+                *p++ = ( ( MBEDTLS_SRTP_NULL_HMAC_SHA1_80_IANA_VALUE ) & 0xFF );
                 break;
             case MBEDTLS_SRTP_NULL_HMAC_SHA1_32:
                 MBEDTLS_SSL_DEBUG_MSG( 3, ( "ssl_write_use_srtp_ext, add profile: %04x",
                         MBEDTLS_SRTP_NULL_HMAC_SHA1_32_IANA_VALUE ) );
-                *p++ = ( ( ( MBEDTLS_SRTP_NULL_HMAC_SHA1_32_IANA_VALUE ) >> 8 ) & 0xFF);
-                *p++ = ( ( MBEDTLS_SRTP_NULL_HMAC_SHA1_32_IANA_VALUE ) & 0xFF);
+                *p++ = ( ( ( MBEDTLS_SRTP_NULL_HMAC_SHA1_32_IANA_VALUE ) >> 8 )
+                         & 0xFF );
+                *p++ = ( ( MBEDTLS_SRTP_NULL_HMAC_SHA1_32_IANA_VALUE ) & 0xFF );
                 break;
             default:
-                /* Note: we shall never arrive here as protection profiles is checked by ssl_set_dtls_srtp_protection_profiles function */
-                MBEDTLS_SSL_DEBUG_MSG( 1, ( "client hello, ignore illegal DTLS-SRTP protection profile %d",  ssl->conf->dtls_srtp_profile_list[protection_profiles_index]) );
+                /*
+                 * Note: we shall never arrive here as protection profiles
+                 * is checked by ssl_set_dtls_srtp_protection_profiles function
+                 */
+                MBEDTLS_SSL_DEBUG_MSG( 1, ( "client hello, ignore illegal DTLS-SRTP protection profile %d",
+                                            ssl->conf->dtls_srtp_profile_list[protection_profiles_index]) );
                 break;
         }
     }
@@ -843,11 +861,18 @@
         {
             *p++ = ssl->dtls_srtp_info.mki_value[i];
         }
-        MBEDTLS_SSL_DEBUG_BUF( 3, "sending mki",  ssl->dtls_srtp_info.mki_value, ssl->dtls_srtp_info.mki_len );
+        MBEDTLS_SSL_DEBUG_BUF( 3, "sending mki",  ssl->dtls_srtp_info.mki_value,
+                               ssl->dtls_srtp_info.mki_len );
     }
 
-    /* total extension length: extension type (2 bytes) + extension length (2 bytes) + protection profile length (2 bytes) + 2*nb protection profiles + srtp_mki vector length(1 byte)*/
-    *olen = 2 + 2 + 2 + 2*( ssl->conf->dtls_srtp_profile_list_len ) + 1 + mki_len;
+    /*
+     * total extension length: extension type (2 bytes)
+     *                         + extension length (2 bytes)
+     *                         + protection profile length (2 bytes)
+     *                         + 2 * number of protection profiles
+     *                         + srtp_mki vector length(1 byte)
+     */
+    *olen = 2 + 2 + 2 + 2 * ( ssl->conf->dtls_srtp_profile_list_len ) + 1 + mki_len;
 }
 #endif /* MBEDTLS_SSL_DTLS_SRTP */
 
@@ -1815,7 +1840,8 @@
 
 #if defined(MBEDTLS_SSL_DTLS_SRTP)
 static int ssl_parse_use_srtp_ext( mbedtls_ssl_context *ssl,
-                               const unsigned char *buf, size_t len )
+                                   const unsigned char *buf,
+                                   size_t len )
 {
     mbedtls_ssl_srtp_profile server_protection = MBEDTLS_SRTP_UNSET_PROFILE;
     size_t i, mki_len = 0;
@@ -1823,7 +1849,8 @@
     const mbedtls_ssl_srtp_profile_info * profile_info;
 
     /* If use_srtp is not configured, just ignore the extension */
-    if( ( ssl->conf->dtls_srtp_profile_list == NULL ) || ( ssl->conf->dtls_srtp_profile_list_len == 0 ) )
+    if( ssl->conf->dtls_srtp_profile_list == NULL ||
+        ssl->conf->dtls_srtp_profile_list_len == 0  )
         return( 0 );
 
     /* RFC5764 section 4.1.1
@@ -1838,21 +1865,32 @@
      *
      */
     if( ssl->conf->dtls_srtp_mki_support == MBEDTLS_SSL_DTLS_SRTP_MKI_SUPPORTED &&
-                ssl->dtls_srtp_info.mki_len != 0 )
+        ssl->dtls_srtp_info.mki_len != 0 )
     {
         mki_len = ssl->dtls_srtp_info.mki_len;
     }
 
-    /* Length is 5 and optional mki_value : one protection profile(2 bytes) + length(2 bytes) and srtp_mki */
+    /*
+     * Length is 5 and optional mki_value : one protection profile(2 bytes)
+     *                                      + length(2 bytes) and srtp_mki
+     */
     if( ( len != 5 ) && ( len != ( 5 + mki_len ) ) )
         return( MBEDTLS_ERR_SSL_BAD_HS_SERVER_HELLO );
 
     /*
      * get the server protection profile
      */
-    if (((uint16_t)( ( buf[0]<<8 ) | buf[1] ) ) != 0x0002) { /* protection profile length must be 0x0002 as we must have only one protection profile in server Hello */
+
+    /*
+     * protection profile length must be 0x0002 as we must have only
+     * one protection profile in server Hello
+     */
+    if( ( (uint16_t)( ( buf[0] << 8 ) | buf[1] ) ) != 0x0002 )
+    {
         return( MBEDTLS_ERR_SSL_BAD_HS_SERVER_HELLO );
-    } else {
+    }
+    else
+    {
         server_protection_profile_value = ( buf[2] << 8 ) | buf[3];
     }
 
@@ -1863,7 +1901,7 @@
      */
     for( i=0; i < ssl->conf->dtls_srtp_profile_list_len; i++)
     {
-        switch ( server_protection_profile_value ) {
+        switch( server_protection_profile_value ) {
             case MBEDTLS_SRTP_AES128_CM_HMAC_SHA1_80_IANA_VALUE:
                 server_protection = MBEDTLS_SRTP_AES128_CM_HMAC_SHA1_80;
                 break;
@@ -1886,7 +1924,7 @@
             MBEDTLS_SSL_DEBUG_MSG( 3, ( "found srtp profile: %s", profile_info->name ) );
         }
 
-        if (server_protection == ssl->conf->dtls_srtp_profile_list[i]) {
+        if( server_protection == ssl->conf->dtls_srtp_profile_list[i] ) {
             ssl->dtls_srtp_info.chosen_dtls_srtp_profile = ssl->conf->dtls_srtp_profile_list[i];
             MBEDTLS_SSL_DEBUG_MSG( 3, ( "selected srtp profile: %s", profile_info->name ) );
             break;
@@ -1897,10 +1935,11 @@
     if( ssl->dtls_srtp_info.chosen_dtls_srtp_profile == MBEDTLS_SRTP_UNSET_PROFILE )
     {
         mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
-                                         MBEDTLS_SSL_ALERT_MSG_HANDSHAKE_FAILURE );
+                                        MBEDTLS_SSL_ALERT_MSG_HANDSHAKE_FAILURE );
         return( MBEDTLS_ERR_SSL_BAD_HS_SERVER_HELLO );
     }
-    /* RFC5764:
+    /*
+     * RFC5764:
      *  If the client detects a nonzero-length MKI in the server's response
      *  that is different than the one the client offered, then the client
      *  MUST abort the handshake and SHOULD send an invalid_parameter alert.
@@ -1913,9 +1952,10 @@
         return( MBEDTLS_ERR_SSL_BAD_HS_SERVER_HELLO );
     }
 #if defined (MBEDTLS_DEBUG_C)
-    if( len > 5)
+    if( len > 5 )
     {
-        MBEDTLS_SSL_DEBUG_BUF( 3, "received mki",  ssl->dtls_srtp_info.mki_value, ssl->dtls_srtp_info.mki_len );
+        MBEDTLS_SSL_DEBUG_BUF( 3, "received mki",  ssl->dtls_srtp_info.mki_value,
+                                                   ssl->dtls_srtp_info.mki_len );
     }
 #endif
     return 0;
@@ -3469,14 +3509,13 @@
     if( ssl->client_auth == 0 )
     {
 #if defined(MBEDTLS_SSL_DTLS_SRTP)
-    /* check if we have a chosen srtp protection profile */
-        if ( ssl->dtls_srtp_info.chosen_dtls_srtp_profile != MBEDTLS_SRTP_UNSET_PROFILE ) {
+        /* check if we have a chosen srtp protection profile */
+        if( ssl->dtls_srtp_info.chosen_dtls_srtp_profile != MBEDTLS_SRTP_UNSET_PROFILE ) {
             ret = MBEDTLS_ERR_SSL_UNEXPECTED_MESSAGE;
         }
         else
         {
-#endif
-            /* MBEDTLS_SSL_DTLS_SRTP */
+#endif /* MBEDTLS_SSL_DTLS_SRTP */
             /* Current message is probably the ServerHelloDone */
             ssl->keep_current_message = 1;
 #if defined(MBEDTLS_SSL_DTLS_SRTP)
@@ -4129,8 +4168,8 @@
     if( ssl->client_auth == 0 || mbedtls_ssl_own_cert( ssl ) == NULL )
     {
 #if defined(MBEDTLS_SSL_DTLS_SRTP)
-    /* check if we have a chosen srtp protection profile */
-        if ( ssl->dtls_srtp_info.chosen_dtls_srtp_profile != MBEDTLS_SRTP_UNSET_PROFILE ) {
+        /* check if we have a chosen srtp protection profile */
+        if( ssl->dtls_srtp_info.chosen_dtls_srtp_profile != MBEDTLS_SRTP_UNSET_PROFILE ) {
             return ( MBEDTLS_ERR_SSL_BAD_HS_CERTIFICATE );
         }
         else
diff --git a/library/ssl_srv.c b/library/ssl_srv.c
index 4c59e5b..38908c8 100644
--- a/library/ssl_srv.c
+++ b/library/ssl_srv.c
@@ -778,15 +778,17 @@
 
 #if defined(MBEDTLS_SSL_DTLS_SRTP)
 static int ssl_parse_use_srtp_ext( mbedtls_ssl_context *ssl,
-                               const unsigned char *buf, size_t len )
+                                   const unsigned char *buf,
+                                   size_t len )
 {
     mbedtls_ssl_srtp_profile client_protection = MBEDTLS_SRTP_UNSET_PROFILE;
     size_t i,j;
     size_t profile_length;
-    const mbedtls_ssl_srtp_profile_info * profile_info;
+    const mbedtls_ssl_srtp_profile_info *profile_info;
 
     /* If use_srtp is not configured, just ignore the extension */
-    if( ( ssl->conf->dtls_srtp_profile_list == NULL ) || ( ssl->conf->dtls_srtp_profile_list_len == 0 ) )
+    if( ssl->conf->dtls_srtp_profile_list == NULL ||
+        ssl->conf->dtls_srtp_profile_list_len == 0 )
         return( 0 );
 
     /* RFC5764 section 4.1.1
@@ -798,22 +800,28 @@
      * } UseSRTPData;
 
      * SRTPProtectionProfile SRTPProtectionProfiles<2..2^16-1>;
-     *
      */
 
-    /* Min length is 5: at least one protection profile(2 bytes) and length(2 bytes) + srtp_mki length(1 byte) */
+    /*
+     * Min length is 5: at least one protection profile(2 bytes)
+     *                  and length(2 bytes) + srtp_mki length(1 byte)
+     */
     if( len < 5 )
         return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
 
    ssl->dtls_srtp_info.chosen_dtls_srtp_profile = MBEDTLS_SRTP_UNSET_PROFILE;
 
-    profile_length = ( buf[0] << 8 ) | buf[1]; /* first 2 bytes are protection profile length(in bytes) */
+    /* first 2 bytes are protection profile length(in bytes) */
+    profile_length = ( buf[0] << 8 ) | buf[1];
 
-
-    /* parse the extension list values are defined in http://www.iana.org/assignments/srtp-protection/srtp-protection.xhtml */
-    for( j=0; j < profile_length; j+=2 )
+    /*
+     * parse the extension list values are defined in
+     * http://www.iana.org/assignments/srtp-protection/srtp-protection.xhtml
+     */
+    for( j=0; j < profile_length; j += 2 )
     {
-        uint16_t protection_profile_value = buf[j+2]<<8 | buf[j+3]; /* +2 to skip the length field */
+        /* + 2 to skip the length field */
+        uint16_t protection_profile_value = buf[j + 2] << 8 | buf[j+3];
 
         switch ( protection_profile_value )
         {
@@ -854,7 +862,7 @@
     if( ( ssl->conf->dtls_srtp_mki_support == MBEDTLS_SSL_DTLS_SRTP_MKI_SUPPORTED ) &&
           ( len > ( profile_length + 2 ) ) )
     {
-        ssl->dtls_srtp_info.mki_len = buf[ profile_length + 2 ];
+        ssl->dtls_srtp_info.mki_len = buf[profile_length + 2];
         if( ssl->dtls_srtp_info.mki_len > MBEDTLS_DTLS_SRTP_MAX_MKI_LENGTH )
         {
             mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
@@ -863,13 +871,14 @@
             return( MBEDTLS_ERR_SSL_BAD_HS_SERVER_HELLO );
         }
 
-        ssl->dtls_srtp_info.mki_len = buf[ profile_length + 2 ];
+        ssl->dtls_srtp_info.mki_len = buf[profile_length + 2];
         for( i=0; i < ssl->dtls_srtp_info.mki_len; i++ )
         {
-            ssl->dtls_srtp_info.mki_value[i] = buf[ profile_length + 2 + 1 + i ];
+            ssl->dtls_srtp_info.mki_value[i] = buf[profile_length + 2 + 1 + i];
         }
 
-        MBEDTLS_SSL_DEBUG_BUF( 3, "using mki",  ssl->dtls_srtp_info.mki_value, ssl->dtls_srtp_info.mki_len );
+        MBEDTLS_SSL_DEBUG_BUF( 3, "using mki",  ssl->dtls_srtp_info.mki_value,
+                                                ssl->dtls_srtp_info.mki_len );
     }
 
      return( 0 );
@@ -2611,7 +2620,8 @@
 
 #if defined(MBEDTLS_SSL_DTLS_SRTP ) && defined(MBEDTLS_SSL_PROTO_DTLS)
 static void ssl_write_use_srtp_ext( mbedtls_ssl_context *ssl,
-                                unsigned char *buf, size_t *olen )
+                                    unsigned char *buf,
+                                    size_t *olen )
 {
     size_t mki_len = 0, ext_len = 0, i;
 
@@ -2624,7 +2634,7 @@
     MBEDTLS_SSL_DEBUG_MSG( 3, ( "server hello, adding use_srtp extension" ) );
 
     if( ssl->conf->dtls_srtp_mki_support == MBEDTLS_SSL_DTLS_SRTP_MKI_SUPPORTED &&
-                ssl->dtls_srtp_info.mki_len != 0 )
+        ssl->dtls_srtp_info.mki_len != 0 )
     {
         mki_len = ssl->dtls_srtp_info.mki_len;
     }
@@ -2632,7 +2642,10 @@
     /* extension */
     buf[0] = (unsigned char)( ( MBEDTLS_TLS_EXT_USE_SRTP >> 8 ) & 0xFF );
     buf[1] = (unsigned char)( ( MBEDTLS_TLS_EXT_USE_SRTP      ) & 0xFF );
-    /* total length 5 and mki value: only one profile(2 bytes) and length(2 bytes) and srtp_mki  ) */
+    /*
+     * total length 5 and mki value: only one profile(2 bytes)
+     *              and length(2 bytes) and srtp_mki  )
+     */
     ext_len = 5 + mki_len;
     buf[2] = (unsigned char)( ( ext_len >> 8 ) & 0xFF );
     buf[3] = (unsigned char)( ext_len & 0xFF );
@@ -2642,20 +2655,28 @@
     buf[5] = 0x02;
     switch (ssl->dtls_srtp_info.chosen_dtls_srtp_profile) {
         case MBEDTLS_SRTP_AES128_CM_HMAC_SHA1_80:
-            buf[6] = (unsigned char)( ( MBEDTLS_SRTP_AES128_CM_HMAC_SHA1_80_IANA_VALUE >> 8) & 0xFF );
-            buf[7] = (unsigned char)( ( MBEDTLS_SRTP_AES128_CM_HMAC_SHA1_80_IANA_VALUE     ) & 0xFF );
+            buf[6] = (unsigned char)( ( MBEDTLS_SRTP_AES128_CM_HMAC_SHA1_80_IANA_VALUE >> 8 )
+                                      & 0xFF );
+            buf[7] = (unsigned char)( ( MBEDTLS_SRTP_AES128_CM_HMAC_SHA1_80_IANA_VALUE     )
+                                      & 0xFF );
             break;
         case MBEDTLS_SRTP_AES128_CM_HMAC_SHA1_32:
-            buf[6] = (unsigned char)( ( MBEDTLS_SRTP_AES128_CM_HMAC_SHA1_32_IANA_VALUE >> 8) & 0xFF );
-            buf[7] = (unsigned char)( ( MBEDTLS_SRTP_AES128_CM_HMAC_SHA1_32_IANA_VALUE     ) & 0xFF );
+            buf[6] = (unsigned char)( ( MBEDTLS_SRTP_AES128_CM_HMAC_SHA1_32_IANA_VALUE >> 8 )
+                                      & 0xFF );
+            buf[7] = (unsigned char)( ( MBEDTLS_SRTP_AES128_CM_HMAC_SHA1_32_IANA_VALUE      )
+                                      & 0xFF );
             break;
         case MBEDTLS_SRTP_NULL_HMAC_SHA1_80:
-            buf[6] = (unsigned char)( ( MBEDTLS_SRTP_NULL_HMAC_SHA1_80_IANA_VALUE >> 8) & 0xFF );
-            buf[7] = (unsigned char)( ( MBEDTLS_SRTP_NULL_HMAC_SHA1_80_IANA_VALUE     ) & 0xFF );
+            buf[6] = (unsigned char)( ( MBEDTLS_SRTP_NULL_HMAC_SHA1_80_IANA_VALUE >> 8 )
+                                      & 0xFF );
+            buf[7] = (unsigned char)( ( MBEDTLS_SRTP_NULL_HMAC_SHA1_80_IANA_VALUE      )
+                                      & 0xFF );
             break;
         case MBEDTLS_SRTP_NULL_HMAC_SHA1_32:
-            buf[6] = (unsigned char)( ( MBEDTLS_SRTP_NULL_HMAC_SHA1_32_IANA_VALUE >> 8) & 0xFF );
-            buf[7] = (unsigned char)( ( MBEDTLS_SRTP_NULL_HMAC_SHA1_32_IANA_VALUE     ) & 0xFF );
+            buf[6] = (unsigned char)( ( MBEDTLS_SRTP_NULL_HMAC_SHA1_32_IANA_VALUE >> 8 )
+                                      & 0xFF );
+            buf[7] = (unsigned char)( ( MBEDTLS_SRTP_NULL_HMAC_SHA1_32_IANA_VALUE      )
+                                      & 0xFF );
             break;
         default:
             *olen = 0;
@@ -2665,7 +2686,7 @@
     buf[8] = mki_len & 0xFF;
     for( i=0; i < mki_len; i++ )
     {
-        buf[ 9 + i ] = ssl->dtls_srtp_info.mki_value[i];
+        buf[9 + i] = ssl->dtls_srtp_info.mki_value[i];
     }
 
     *olen = 9 + mki_len;
@@ -2961,7 +2982,7 @@
 #endif
 
 #if defined(MBEDTLS_SSL_DTLS_SRTP)
-    ssl_write_use_srtp_ext( ssl, p + 2 + ext_len, &olen);
+    ssl_write_use_srtp_ext( ssl, p + 2 + ext_len, &olen );
     ext_len += olen;
 #endif
 
@@ -3030,11 +3051,15 @@
     else
 #endif
 #if defined(MBEDTLS_SSL_DTLS_SRTP)
-    /* check if we have a chosen srtp protection profile, force verify mode to be at least OPTIONAL */
-    if ( ( ssl->dtls_srtp_info.chosen_dtls_srtp_profile != MBEDTLS_SRTP_UNSET_PROFILE ) && ( ssl->conf->authmode == MBEDTLS_SSL_VERIFY_NONE ) ) {
+    /*
+     * check if we have a chosen srtp protection profile,
+     * force verify mode to be at least OPTIONAL
+     */
+    if ( ssl->dtls_srtp_info.chosen_dtls_srtp_profile != MBEDTLS_SRTP_UNSET_PROFILE &&
+         ssl->conf->authmode == MBEDTLS_SSL_VERIFY_NONE ) {
         authmode = MBEDTLS_SSL_VERIFY_OPTIONAL;
     }
-        else
+    else
 #endif
         authmode = ssl->conf->authmode;
 
@@ -3045,7 +3070,7 @@
     /* check if we have a chosen srtp protection profile */
         if ( ssl->dtls_srtp_info.chosen_dtls_srtp_profile != MBEDTLS_SRTP_UNSET_PROFILE ) {
             MBEDTLS_SSL_DEBUG_MSG( 2, ( "should not happen" ) );
-            return ( MBEDTLS_ERR_SSL_UNEXPECTED_MESSAGE );
+            return( MBEDTLS_ERR_SSL_UNEXPECTED_MESSAGE );
         }
         else
         {
diff --git a/library/ssl_tls.c b/library/ssl_tls.c
index 18c86a5..3a0fbfc 100644
--- a/library/ssl_tls.c
+++ b/library/ssl_tls.c
@@ -873,19 +873,19 @@
 
 #if defined(MBEDTLS_SSL_DTLS_SRTP)
     /* check if we have a chosen srtp protection profile */
-    if ( ssl->dtls_srtp_info.chosen_dtls_srtp_profile != MBEDTLS_SRTP_UNSET_PROFILE ) {
-        /* derive key material for srtp session RFC5764 section 4.2 */
-        /* master key and master salt are respectively 128 bits and 112 bits for all currently available modes :
+    if( ssl->dtls_srtp_info.chosen_dtls_srtp_profile != MBEDTLS_SRTP_UNSET_PROFILE ) {
+        /* derive key material for srtp session RFC5764 section 4.2
+         * master key and master salt are respectively 128 bits and 112 bits
+         * for all currently available modes :
          * SRTP_AES128_CM_HMAC_SHA1_80, SRTP_AES128_CM_HMAC_SHA1_32
          * SRTP_NULL_HMAC_SHA1_80, SRTP_NULL_HMAC_SHA1_32
          * So we must export 2*(128 + 112) = 480 bits
          */
 	ssl->dtls_srtp_info.dtls_srtp_keys_len = MBEDTLS_DTLS_SRTP_MAX_KEY_MATERIAL_LENGTH;
 
-	//ssl->dtls_srtp_info.dtls_srtp_keys = (unsigned char *)mbedtls_calloc(1, ssl->dtls_srtp_info.dtls_srtp_keys_len);
-
-	ret = tls_prf( master, 48, "EXTRACTOR-dtls_srtp",
-			randbytes, 64, ssl->dtls_srtp_info.dtls_srtp_keys, ssl->dtls_srtp_info.dtls_srtp_keys_len );
+        ret = tls_prf( master, 48, "EXTRACTOR-dtls_srtp",
+                       randbytes, 64, ssl->dtls_srtp_info.dtls_srtp_keys,
+                       ssl->dtls_srtp_info.dtls_srtp_keys_len );
 
         if( ret != 0 )
         {
@@ -2113,9 +2113,9 @@
     if( !mbedtls_ssl_ciphersuite_uses_srv_cert( ciphersuite_info ) )
     {
 #if defined(MBEDTLS_SSL_DTLS_SRTP)
-    /* check if we have a chosen srtp protection profile */
-        if ( ssl->dtls_srtp_info.chosen_dtls_srtp_profile != MBEDTLS_SRTP_UNSET_PROFILE ) {
-            return ( MBEDTLS_ERR_SSL_BAD_HS_CERTIFICATE );
+        /* check if we have a chosen srtp protection profile */
+        if( ssl->dtls_srtp_info.chosen_dtls_srtp_profile != MBEDTLS_SRTP_UNSET_PROFILE ) {
+            return( MBEDTLS_ERR_SSL_BAD_HS_CERTIFICATE );
         }
         else
         {
@@ -2754,7 +2754,7 @@
                        : ssl->dtls_srtp_info.chosen_dtls_srtp_profile !=
                                MBEDTLS_SRTP_UNSET_PROFILE
                        && ssl->conf->authmode == MBEDTLS_SSL_VERIFY_NONE
-                       ? MBEDTLS_SSL_VERIFY_REQUIRED
+                       ? MBEDTLS_SSL_VERIFY_OPTIONAL
 #endif /* MBEDTLS_SSL_DTLS_SRTP */
                        : ssl->conf->authmode;
 #else
@@ -2763,7 +2763,7 @@
             ssl->dtls_srtp_info.chosen_dtls_srtp_profile !=
                                            MBEDTLS_SRTP_UNSET_PROFILE &&
             ssl->conf->authmode == MBEDTLS_SSL_VERIFY_NONE ?
-            MBEDTLS_SSL_VERIFY_REQUIRED :
+            MBEDTLS_SSL_VERIFY_OPTIONAL :
 #endif /* MBEDTLS_SSL_DTLS_SRTP */
             ssl->conf->authmode;
 #endif
@@ -4762,12 +4762,15 @@
     return( NULL );
 }
 
-void mbedtls_ssl_conf_srtp_mki_value_supported( mbedtls_ssl_config *conf, int support_mki_value )
+void mbedtls_ssl_conf_srtp_mki_value_supported( mbedtls_ssl_config *conf,
+                                                int support_mki_value )
 {
     conf->dtls_srtp_mki_support = support_mki_value;
 }
 
-int mbedtls_ssl_dtls_srtp_set_mki_value( mbedtls_ssl_context *ssl, unsigned char* mki_value, size_t mki_len )
+int mbedtls_ssl_dtls_srtp_set_mki_value( mbedtls_ssl_context *ssl,
+                                         unsigned char *mki_value,
+                                         size_t mki_len )
 {
     if ( mki_len > MBEDTLS_DTLS_SRTP_MAX_MKI_LENGTH )
         return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
@@ -4780,20 +4783,22 @@
     return 0;
 }
 
-int mbedtls_ssl_conf_dtls_srtp_protection_profiles( mbedtls_ssl_config *conf, const mbedtls_ssl_srtp_profile *profiles, size_t profiles_number)
+int mbedtls_ssl_conf_dtls_srtp_protection_profiles( mbedtls_ssl_config *conf,
+                                                    const mbedtls_ssl_srtp_profile *profiles,
+                                                    size_t profiles_number )
 {
     size_t i;
     /* check in put validity : must be a list of profiles from enumeration */
     /* maximum length is 4 as only 4 protection profiles are defined */
-    if (profiles_number>4) {
-            return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
+    if( profiles_number > 4 ) {
+        return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
     }
 
-    mbedtls_free(conf->dtls_srtp_profile_list);
-    conf->dtls_srtp_profile_list = (mbedtls_ssl_srtp_profile *)mbedtls_calloc(1, profiles_number*sizeof(mbedtls_ssl_srtp_profile));
+    mbedtls_free( conf->dtls_srtp_profile_list );
+    conf->dtls_srtp_profile_list = (mbedtls_ssl_srtp_profile*)mbedtls_calloc(1, profiles_number * sizeof( mbedtls_ssl_srtp_profile ) );
 
-    for (i=0; i<profiles_number; i++) {
-        switch (profiles[i]) {
+    for( i=0; i < profiles_number; i++ ) {
+        switch( profiles[i] ) {
             case MBEDTLS_SRTP_AES128_CM_HMAC_SHA1_80:
             case MBEDTLS_SRTP_AES128_CM_HMAC_SHA1_32:
             case MBEDTLS_SRTP_NULL_HMAC_SHA1_80:
@@ -4801,7 +4806,7 @@
                 conf->dtls_srtp_profile_list[i] = profiles[i];
                 break;
             default:
-                mbedtls_free(conf->dtls_srtp_profile_list);
+                mbedtls_free( conf->dtls_srtp_profile_list );
                 conf->dtls_srtp_profile_list = NULL;
                 conf->dtls_srtp_profile_list_len = 0;
                 return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
@@ -4814,19 +4819,22 @@
     return( 0 );
 }
 
-mbedtls_ssl_srtp_profile mbedtls_ssl_get_dtls_srtp_protection_profile( const mbedtls_ssl_context *ssl)
+mbedtls_ssl_srtp_profile mbedtls_ssl_get_dtls_srtp_protection_profile( const mbedtls_ssl_context *ssl )
 {
-    return( ssl->dtls_srtp_info.chosen_dtls_srtp_profile);
+    return( ssl->dtls_srtp_info.chosen_dtls_srtp_profile );
 }
 
-int mbedtls_ssl_get_dtls_srtp_key_material( const mbedtls_ssl_context *ssl, unsigned char *key, size_t *key_len ) {
+int mbedtls_ssl_get_dtls_srtp_key_material( const mbedtls_ssl_context *ssl,
+                                            unsigned char *key,
+                                            size_t *key_len ) {
 
     /* check output buffer size */
-    if ( *key_len < ssl->dtls_srtp_info.dtls_srtp_keys_len) {
+    if( *key_len < ssl->dtls_srtp_info.dtls_srtp_keys_len ) {
         return MBEDTLS_ERR_SSL_BUFFER_TOO_SMALL;
     }
 
-    memcpy( key, ssl->dtls_srtp_info.dtls_srtp_keys, ssl->dtls_srtp_info.dtls_srtp_keys_len);
+    memcpy( key, ssl->dtls_srtp_info.dtls_srtp_keys,
+            ssl->dtls_srtp_info.dtls_srtp_keys_len );
     *key_len = ssl->dtls_srtp_info.dtls_srtp_keys_len;
 
     return 0;
@@ -6931,8 +6939,8 @@
 #endif
 
 #if defined (MBEDTLS_SSL_DTLS_SRTP)
-    mbedtls_platform_zeroize( ssl->dtls_srtp_info.dtls_srtp_keys, ssl->dtls_srtp_info.dtls_srtp_keys_len );
-    //mbedtls_free( ssl->dtls_srtp_keys );
+    mbedtls_platform_zeroize( ssl->dtls_srtp_info.dtls_srtp_keys,
+                              ssl->dtls_srtp_info.dtls_srtp_keys_len );
 #endif /* MBEDTLS_SSL_DTLS_SRTP */
 
     MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= free" ) );