API Server and DHCP Lease Management

src/mesh/eth/ethServerAPI.cpp

@@ -0,0 +1,82 @@
+#include "ethServerAPI.h"
+#include "configuration.h"
+#include <Arduino.h>
+
+static ethServerPort *apiPort;
+
+void initApiServer(int port)
+{
+    // Start API server on port 4403
+    if (!apiPort) {
+        apiPort = new ethServerPort(port);
+        DEBUG_MSG("API server listening on TCP port %d\n", port);
+        apiPort->init();
+    }
+}
+
+ethServerAPI::ethServerAPI(EthernetClient &_client) : StreamAPI(&client), client(_client)
+{
+    DEBUG_MSG("Incoming ethernet connection\n");
+}
+
+ethServerAPI::~ethServerAPI()
+{
+    client.stop();
+
+    // FIXME - delete this if the client dropps the connection!
+}
+
+/// override close to also shutdown the TCP link
+void ethServerAPI::close()
+{
+    client.stop(); // drop tcp connection
+    StreamAPI::close();
+}
+
+/// Check the current underlying physical link to see if the client is currently connected
+bool ethServerAPI::checkIsConnected()
+{
+    return client.connected();
+}
+
+int32_t ethServerAPI::runOnce()
+{
+    if (client.connected()) {
+        return StreamAPI::runOnce();
+    } else {
+        DEBUG_MSG("Client dropped connection, suspending API service\n");
+        enabled = false; // we no longer need to run
+        return 0;
+    }
+}
+
+/// If an api server is running, we try to spit out debug 'serial' characters there
+void ethServerPort::debugOut(char c)
+{
+    if (apiPort && apiPort->openAPI)
+        apiPort->openAPI->debugOut(c);
+}
+
+
+ethServerPort::ethServerPort(int port) : EthernetServer(port), concurrency::OSThread("ApiServer") {}
+
+void ethServerPort::init()
+{
+    begin();
+}
+
+int32_t ethServerPort::runOnce()
+{
+    auto client = available();
+    if (client) {
+        // Close any previous connection (see FIXME in header file)
+        if (openAPI) {
+            DEBUG_MSG("Force closing previous TCP connection\n");
+            delete openAPI;
+        }
+
+        openAPI = new ethServerAPI(client);
+    }
+
+    return 100; // only check occasionally for incoming connections
+}