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-rw-r--r--src/dabOutput/dabOutputTcp.cpp129
1 files changed, 3 insertions, 126 deletions
diff --git a/src/dabOutput/dabOutputTcp.cpp b/src/dabOutput/dabOutputTcp.cpp
index 7fb17ca..87dbfd5 100644
--- a/src/dabOutput/dabOutputTcp.cpp
+++ b/src/dabOutput/dabOutputTcp.cpp
@@ -37,7 +37,6 @@
#include <atomic>
#include <thread>
#include "ThreadsafeQueue.h"
-#include "TcpSocket.h"
using namespace std;
@@ -47,129 +46,7 @@ using vec_u8 = std::vector<uint8_t>;
// 250 frames correspond to 6 seconds. This is mostly here
// to ensure we do not accumulate data for faulty sockets, delay
// management has to be done on the receiver end.
-const size_t MAX_QUEUED_ELEMS = 250;
-
-class TCPConnection
-{
- public:
- TCPConnection(TcpSocket&& sock) :
- queue(),
- m_running(true),
- m_sender_thread(),
- m_sock(move(sock)) {
- auto addr = m_sock.getRemoteAddress();
- etiLog.level(debug) << "New TCP Connection from " <<
- addr.getHostAddress() << ":" << addr.getPort();
- m_sender_thread = std::thread(&TCPConnection::process, this, 0);
- }
-
- ~TCPConnection() {
- m_running = false;
- vec_u8 termination_marker;
- queue.push(termination_marker);
- m_sender_thread.join();
- }
-
- ThreadsafeQueue<vec_u8> queue;
-
- bool is_overloaded(void) const {
- return queue.size() > MAX_QUEUED_ELEMS;
- }
-
- private:
- TCPConnection(const TCPConnection& other) = delete;
- TCPConnection& operator=(const TCPConnection& other) = delete;
-
- atomic<bool> m_running;
- std::thread m_sender_thread;
- TcpSocket m_sock;
-
- void process(long) {
- while (m_running) {
- vec_u8 data;
- queue.wait_and_pop(data);
-
- if (data.empty()) {
- // empty vector is the termination marker
- break;
- }
-
- try {
- ssize_t sent = 0;
- do {
- const int timeout_ms = 10; // Less than one ETI frame
- sent = m_sock.send(&data[0], data.size(), timeout_ms);
-
- if (is_overloaded()) {
- m_running = false;
- break;
- }
- }
- while (sent == 0);
- }
- catch (const std::runtime_error& e) {
- m_running = false;
- }
- }
-
- auto addr = m_sock.getRemoteAddress();
- etiLog.level(debug) << "Dropping TCP Connection from " <<
- addr.getHostAddress() << ":" << addr.getPort();
- }
-};
-
-class TCPDataDispatcher
-{
- public:
- ~TCPDataDispatcher() {
- m_running = false;
- m_connections.clear();
- m_listener_socket.close();
- m_listener_thread.join();
- }
-
- void start(int port, const string& address) {
- TcpSocket sock(port, address);
- m_listener_socket = move(sock);
-
- m_running = true;
- m_listener_thread = std::thread(&TCPDataDispatcher::process, this, 0);
- }
-
- void Write(const vec_u8& data) {
- for (auto& connection : m_connections) {
- connection.queue.push(data);
- }
-
- m_connections.remove_if([](const TCPConnection& conn){ return conn.is_overloaded(); });
- }
-
- private:
- void process(long) {
- try {
- m_listener_socket.listen();
-
- const int timeout_ms = 1000;
-
- while (m_running) {
- // Add a new TCPConnection to the list, constructing it from the client socket
- auto sock = m_listener_socket.accept(timeout_ms);
- if (sock.isValid()) {
- m_connections.emplace(m_connections.begin(), move(sock));
- }
- }
- }
- catch (const std::runtime_error& e) {
- etiLog.level(error) << "TCPDataDispatcher caught runtime error: " << e.what();
- m_running = false;
- }
- }
-
- atomic<bool> m_running;
- std::thread m_listener_thread;
- TcpSocket m_listener_socket;
- std::list<TCPConnection> m_connections;
-};
+const size_t MAX_QUEUED_ETI_FRAMES = 250;
static bool parse_uri(const char *uri, long *port, string& addr)
{
@@ -217,7 +94,7 @@ int DabOutputTcp::Open(const char* name)
uri_ = name;
if (success) {
- dispatcher_ = make_shared<TCPDataDispatcher>();
+ dispatcher_ = make_shared<TCPDataDispatcher>(MAX_QUEUED_ETI_FRAMES);
dispatcher_->start(port, address);
}
else {
@@ -237,7 +114,7 @@ int DabOutputTcp::Write(void* buffer, int size)
// Pad to 6144 bytes
std::fill(data.begin() + size, data.end(), 0x55);
- dispatcher_->Write(data);
+ dispatcher_->write(data);
return size;
}