Function IsNetworkCompatibleVersion

src/network/core/network_game_info.cpp:104–121

* Checks whether the given version string is compatible with our version. * First tries to match the full string, if that fails, attempts to compare just git hashes. * @param other the version string to compare to */

 * @param other the version string to compare to
 */
bool IsNetworkCompatibleVersion(std::string_view other)
{
	std::string_view our_revision = GetNetworkRevisionString();
	if (our_revision == other) return true;

	/* If this version is tagged, then the revision string must be a complete match,
	 * since there is no git hash suffix in it.
	 * This is needed to avoid situations like "1.9.0-beta1" comparing equal to "2.0.0-beta1".  */
	if (_openttd_revision_tagged) return false;

	/* One of the versions is for some sort of debugging, but not both. */
	if (other.starts_with("dbg_seed") != our_revision.starts_with("dbg_seed")) return false;
	if (other.starts_with("dbg_sync") != our_revision.starts_with("dbg_sync")) return false;

	std::string_view hash1 = ExtractNetworkRevisionHash(our_revision);
	std::string_view hash2 = ExtractNetworkRevisionHash(other);
	return hash1 == hash2;
}

/**
 * Check if an game entry is compatible with our client.