src: set port in node_options to uint16_t

PR-URL: nodejs#49151
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>

src/node_options.cc

@@ -10,9 +10,8 @@
 #include "openssl/opensslv.h"
 #endif
 
-#include <errno.h>
 #include <algorithm>
-#include <cstdlib>  // strtoul, errno
+#include <charconv>
 #include <limits>
 #include <sstream>
 #include <string_view>
@@ -1026,17 +1025,17 @@ inline std::string RemoveBrackets(const std::string& host) {
     return host;
 }
 
-inline int ParseAndValidatePort(const std::string& port,
-                                std::vector<std::string>* errors) {
-  char* endptr;
-  errno = 0;
-  const unsigned long result =                 // NOLINT(runtime/int)
-    strtoul(port.c_str(), &endptr, 10);
-  if (errno != 0 || *endptr != '\0'||
-      (result != 0 && result < 1024) || result > 65535) {
+inline uint16_t ParseAndValidatePort(const std::string_view port,
+                                     std::vector<std::string>* errors) {
+  uint16_t result{};
+  auto r = std::from_chars(port.data(), port.data() + port.size(), result);
+
+  if (r.ec == std::errc::result_out_of_range ||
+      (result != 0 && result < 1024)) {
     errors->push_back(" must be 0 or in range 1024 to 65535.");
   }
-  return static_cast<int>(result);
+
+  return result;
 }
 
 HostPort SplitHostPort(const std::string& arg,

src/node_options.h

@@ -28,24 +28,20 @@ class HostPort {
 
   void set_host(const std::string& host) { host_name_ = host; }
 
-  void set_port(int port) { port_ = port; }
+  void set_port(uint16_t port) { port_ = port; }
 
   const std::string& host() const { return host_name_; }
 
-  int port() const {
-    // TODO(joyeecheung): make port a uint16_t
-    CHECK_GE(port_, 0);
-    return port_;
-  }
+  uint16_t port() const { return port_; }
 
   void Update(const HostPort& other) {
     if (!other.host_name_.empty()) host_name_ = other.host_name_;
-    if (other.port_ >= 0) port_ = other.port_;
+    port_ = other.port_;
   }
 
  private:
   std::string host_name_;
-  int port_;
+  uint16_t port_;
 };
 
 class Options {