Codechange: use NetworkAddress instead of two host/port variables where possible

This also means we no longer need last_host/last_port, but can
just use a single last_joined setting.

src/network/core/address.cpp

@@ -101,8 +101,8 @@ void NetworkAddress::GetAddressAsString(char *buffer, const char *last, bool wit
  */
 std::string NetworkAddress::GetAddressAsString(bool with_family)
 {
-	/* 6 = for the : and 5 for the decimal port number */
-	char buf[NETWORK_HOSTNAME_LENGTH + 6 + 7];
+	/* 7 extra are for with_family, which adds " (IPvX)". */
+	char buf[NETWORK_HOSTNAME_PORT_LENGTH + 7];
 	this->GetAddressAsString(buf, lastof(buf), with_family);
 	return buf;
 }

src/network/core/config.h

@@ -56,6 +56,7 @@ static const byte NETWORK_MASTER_SERVER_VERSION   =    2;         ///< What vers
 static const uint NETWORK_NAME_LENGTH             =   80;         ///< The maximum length of the server name and map name, in bytes including '\0'
 static const uint NETWORK_COMPANY_NAME_LENGTH     =  128;         ///< The maximum length of the company name, in bytes including '\0'
 static const uint NETWORK_HOSTNAME_LENGTH         =   80;         ///< The maximum length of the host name, in bytes including '\0'
+static const uint NETWORK_HOSTNAME_PORT_LENGTH    =   80 + 6;     ///< The maximum length of the host name + port, in bytes including '\0'. The extra six is ":" + port number (with a max of 65536)
 static const uint NETWORK_SERVER_ID_LENGTH        =   33;         ///< The maximum length of the network id of the servers, in bytes including '\0'
 static const uint NETWORK_REVISION_LENGTH         =   33;         ///< The maximum length of the revision, in bytes including '\0'
 static const uint NETWORK_PASSWORD_LENGTH         =   33;         ///< The maximum length of the password, in bytes including '\0' (must be >= NETWORK_SERVER_ID_LENGTH)

src/network/core/tcp_http.cpp

@@ -203,11 +203,7 @@ int NetworkHTTPSocketHandler::HandleHeader()
 
 	*url = '\0';
 
-	/* Fetch the hostname, and possible port number. */
-	const char *port = nullptr;
-	ParseConnectionString(&port, hname);
-
-	NetworkAddress address(hname, port == nullptr ? 80 : atoi(port));
+	NetworkAddress address = ParseConnectionString(hname, 80);
 
 	/* Restore the URL. */
 	*url = '/';