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Expose OS-chosen address and port from async_server#734

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Merged
deanberris merged 1 commit intocpp-netlib:masterfromtribal-tec:master
Mar 1, 2017
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Expose OS-chosen address and port from async_server
  • Loading branch information
@tribal-tec
tribal-tec committedFeb 28, 2017
commitc9f1ee5d654540ecee282cbea6cbc7fd7d1a2a6d
26 changes: 24 additions & 2 deletionsboost/network/protocol/http/server/async_server.hpp
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Original file line numberDiff line numberDiff line change
Expand Up@@ -35,13 +35,17 @@ struct async_server_base : server_storage_base, socket_options_base {
/// Defines the type for the connection pointer.
typedef std::shared_ptr<connection> connection_ptr;

/// Defines the type for the options.
typedef server_options<Tag, Handler> options;

/// Constructs and initializes the asynchronous server core.
explicit async_server_base(server_options<Tag, Handler> const &options)
explicit async_server_base(options const &options)
: server_storage_base(options),
socket_options_base(options),
handler(options.handler()),
address_(options.address()),
port_(options.port()),
protocol_family(options.protocol_family()),
thread_pool(options.thread_pool()
? options.thread_pool()
: std::make_shared<utils::thread_pool>()),
Expand DownExpand Up@@ -108,11 +112,19 @@ struct async_server_base : server_storage_base, socket_options_base {
}
}

/// Returns the server socket address, either IPv4 or IPv6 depending on
/// options.protocol_family()
const string_type& address() const { return address_; }

/// Returns the server socket port
const string_type& port() const { return port_; }

private:
typedef std::unique_lock<std::mutex> scoped_mutex_lock;

Handler &handler;
string_type address_, port_;
typename options::protocol_family_t protocol_family;
std::shared_ptr<utils::thread_pool> thread_pool;
boost::asio::ip::tcp::acceptor acceptor;
bool stopping;
Expand DownExpand Up@@ -165,7 +177,15 @@ struct async_server_base : server_storage_base, socket_options_base {
// this allows repeated cycles of run -> stop -> run
service_.reset();
tcp::resolver resolver(service_);
tcp::resolver::query query(address_, port_);
tcp::resolver::query query( [&]{
switch(protocol_family) {
case options::ipv4:
return tcp::resolver::query(tcp::v4(), address_, port_);
case options::ipv6:
return tcp::resolver::query(tcp::v6(), address_, port_);
default:
return tcp::resolver::query(address_, port_);
}}());
tcp::resolver::iterator endpoint_iterator = resolver.resolve(query, error);
if (error) {
BOOST_NETWORK_MESSAGE("Error resolving '" << address_ << ':' << port_);
Expand All@@ -185,6 +205,8 @@ struct async_server_base : server_storage_base, socket_options_base {
<< port_);
return;
}
address_ = acceptor.local_endpoint().address().to_string();
port_ = std::to_string(acceptor.local_endpoint().port());
acceptor.listen(boost::asio::socket_base::max_connections, error);
if (error) {
BOOST_NETWORK_MESSAGE("Error listening on socket: '"
Expand Down
14 changes: 14 additions & 0 deletionsboost/network/protocol/http/server/options.hpp
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Original file line numberDiff line numberDiff line change
Expand Up@@ -34,6 +34,7 @@ struct server_options {
handler_(handler),
address_("localhost"),
port_("80"),
protocol_family_(undefined),
reuse_address_(false),
report_aborted_(false),
non_blocking_io_(true),
Expand DownExpand Up@@ -88,6 +89,14 @@ struct server_options {
return *this;
}

enum protocol_family_t { ipv4, ipv6, undefined };

/// Set the protocol family for address resolving. Default is AF_UNSPEC.
server_options &protocol_family(protocol_family_t v) {
protocol_family_ = v;
return *this;
}

/// Set whether to reuse the address (SO_REUSE_ADDR). Default is false.
server_options &reuse_address(bool v) {
reuse_address_ = v;
Expand DownExpand Up@@ -159,6 +168,9 @@ struct server_options {
/// Returns the port to listen on.
string_type port() const { return port_; }

/// Returns the protocol family used for address resolving.
protocol_family_t protocol_family() const { return protocol_family_; }

/// Returns a reference to the provided handler.
Handler &handler() const { return handler_; }

Expand DownExpand Up@@ -215,6 +227,7 @@ struct server_options {
swap(io_service_, other.io_service_);
swap(address_, other.address_);
swap(port_, other.port_);
swap(protocol_family_, other.protocol_family_);
swap(reuse_address_, other.reuse_address_);
swap(report_aborted_, other.report_aborted_);
swap(non_blocking_io_, other.non_blocking_io_);
Expand All@@ -233,6 +246,7 @@ struct server_options {
Handler &handler_;
string_type address_;
string_type port_;
protocol_family_t protocol_family_;
bool reuse_address_;
bool report_aborted_;
bool non_blocking_io_;
Expand Down
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