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nsapi_dns: Convert to Chrono

pull/12428/head
Kevin Bracey 2020-02-13 16:44:24 +02:00
parent d1ae0d570c
commit 08fa26bdda
1 changed files with 20 additions and 17 deletions
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35
features/netsocket/nsapi_dns.cpp
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@ -31,6 +31,9 @@
#include "PlatformMutex.h" #include "PlatformMutex.h"
#include "SingletonPtr.h" #include "SingletonPtr.h"
using namespace std::chrono;
using rtos::Kernel::Clock;
#define CLASS_IN 1 #define CLASS_IN 1
#define RR_A 1 #define RR_A 1
@ -51,8 +54,8 @@
struct DNS_CACHE { struct DNS_CACHE {
nsapi_addr_t *address; nsapi_addr_t *address;
char *host; char *host;
uint64_t expires; /*!< time to live in milliseconds */ Clock::time_point expires; /*!< time to live in milliseconds */
uint64_t accessed; /*!< last accessed */ Clock::time_point accessed; /*!< last accessed */
uint8_t count; /*!< number of IP addresses */ uint8_t count; /*!< number of IP addresses */
}; };
@ -80,7 +83,7 @@ struct DNS_QUERY {
UDPSocket *socket; UDPSocket *socket;
SOCKET_CB_DATA *socket_cb_data; SOCKET_CB_DATA *socket_cb_data;
nsapi_addr_t *addrs; nsapi_addr_t *addrs;
uint32_t ttl; duration<uint32_t> ttl;
uint32_t total_timeout; uint32_t total_timeout;
uint32_t socket_timeout; uint32_t socket_timeout;
uint16_t dns_message_id; uint16_t dns_message_id;
@ -92,7 +95,7 @@ struct DNS_QUERY {
dns_state state; dns_state state;
}; };
static void nsapi_dns_cache_add(const char *host, nsapi_addr_t *address, uint32_t ttl, uint8_t count); static void nsapi_dns_cache_add(const char *host, nsapi_addr_t *address, duration<uint32_t> ttl, uint8_t count);
static nsapi_size_or_error_t nsapi_dns_cache_find(const char *host, nsapi_version_t version, nsapi_addr_t *address); static nsapi_size_or_error_t nsapi_dns_cache_find(const char *host, nsapi_version_t version, nsapi_addr_t *address);
static void nsapi_dns_cache_reset(); static void nsapi_dns_cache_reset();
@ -227,7 +230,7 @@ static int dns_append_question(uint8_t *ptr, uint16_t id, const char *host, nsap
return *p - s_ptr; return *p - s_ptr;
} }
static int dns_scan_response(const uint8_t *ptr, uint16_t exp_id, uint32_t *ttl, nsapi_addr_t *addr, unsigned addr_count) static int dns_scan_response(const uint8_t *ptr, uint16_t exp_id, duration<uint32_t> *ttl, nsapi_addr_t *addr, unsigned addr_count)
{ {
const uint8_t **p = &ptr; const uint8_t **p = &ptr;
@ -293,7 +296,7 @@ static int dns_scan_response(const uint8_t *ptr, uint16_t exp_id, uint32_t *ttl,
if (ttl_val > INT32_MAX) { if (ttl_val > INT32_MAX) {
ttl_val = INT32_MAX; ttl_val = INT32_MAX;
} }
*ttl = ttl_val; *ttl = duration<uint32_t>(ttl_val);
} }
if (rtype == RR_A && rclass == CLASS_IN && rdlength == NSAPI_IPv4_BYTES) { if (rtype == RR_A && rclass == CLASS_IN && rdlength == NSAPI_IPv4_BYTES) {
@ -323,11 +326,11 @@ static int dns_scan_response(const uint8_t *ptr, uint16_t exp_id, uint32_t *ttl,
return count; return count;
} }
static void nsapi_dns_cache_add(const char *host, nsapi_addr_t *address, uint32_t ttl, uint8_t count) static void nsapi_dns_cache_add(const char *host, nsapi_addr_t *address, duration<uint32_t> ttl, uint8_t count)
{ {
#if (MBED_CONF_NSAPI_DNS_CACHE_SIZE > 0) #if (MBED_CONF_NSAPI_DNS_CACHE_SIZE > 0)
// RFC 1034: if TTL is zero, entry is not added to cache // RFC 1034: if TTL is zero, entry is not added to cache
if (ttl == 0) { if (ttl == ttl.zero()) {
return; return;
} }
@ -339,7 +342,7 @@ static void nsapi_dns_cache_add(const char *host, nsapi_addr_t *address, uint32_
dns_cache_mutex->lock(); dns_cache_mutex->lock();
int index = -1; int index = -1;
uint64_t accessed = UINT64_MAX; Clock::time_point accessed = Clock::time_point::max();
// Finds free or last accessed entry // Finds free or last accessed entry
for (int i = 0; i < MBED_CONF_NSAPI_DNS_CACHE_SIZE; i++) { for (int i = 0; i < MBED_CONF_NSAPI_DNS_CACHE_SIZE; i++) {
@ -373,9 +376,9 @@ static void nsapi_dns_cache_add(const char *host, nsapi_addr_t *address, uint32_
dns_cache[index]->count = count; dns_cache[index]->count = count;
dns_cache[index]->host = new (std::nothrow) char[strlen(host) + 1]; dns_cache[index]->host = new (std::nothrow) char[strlen(host) + 1];
strcpy(dns_cache[index]->host, host); strcpy(dns_cache[index]->host, host);
uint64_t ms_count = rtos::Kernel::get_ms_count(); auto now = Clock::now();
dns_cache[index]->expires = ms_count + (uint64_t) ttl * 1000; dns_cache[index]->expires = now + ttl;
dns_cache[index]->accessed = ms_count; dns_cache[index]->accessed = now;
} }
dns_cache_mutex->unlock(); dns_cache_mutex->unlock();
@ -391,9 +394,9 @@ static nsapi_size_or_error_t nsapi_dns_cache_find(const char *host, nsapi_versio
for (int i = 0; i < MBED_CONF_NSAPI_DNS_CACHE_SIZE; i++) { for (int i = 0; i < MBED_CONF_NSAPI_DNS_CACHE_SIZE; i++) {
if (dns_cache[i]) { if (dns_cache[i]) {
uint64_t ms_count = rtos::Kernel::get_ms_count(); auto now = Clock::now();
// Checks all entries for expired entries // Checks all entries for expired entries
if (ms_count > dns_cache[i]->expires) { if (now > dns_cache[i]->expires) {
delete dns_cache[i]->host; delete dns_cache[i]->host;
delete dns_cache[i]; delete dns_cache[i];
dns_cache[i] = NULL; dns_cache[i] = NULL;
@ -406,7 +409,7 @@ static nsapi_size_or_error_t nsapi_dns_cache_find(const char *host, nsapi_versio
ret_val++; ret_val++;
} }
} }
dns_cache[i]->accessed = ms_count; dns_cache[i]->accessed = now;
} }
} }
@ -566,7 +569,7 @@ static nsapi_size_or_error_t nsapi_dns_query_multiple(NetworkStack *stack, const
} }
const uint8_t *response = packet; const uint8_t *response = packet;
uint32_t ttl; duration<uint32_t> ttl;
int resp = dns_scan_response(response, 1, &ttl, addr, addr_count); int resp = dns_scan_response(response, 1, &ttl, addr, addr_count);
if (resp > 0) { if (resp > 0) {
nsapi_dns_cache_add(host, addr, ttl, resp); nsapi_dns_cache_add(host, addr, ttl, resp);