Moving headers into include/sls (#212)

slsSupportLib/include/sls/UdpRxSocket.h

@@ -0,0 +1,30 @@
+
+#pragma once
+/*
+UDP socket class to receive data. The intended use is in the
+receiver listener loop. Should be used RAII style...
+*/
+
+#include <sys/types.h> //ssize_t
+namespace sls {
+
+class UdpRxSocket {
+    const ssize_t packet_size_;
+    int sockfd_{-1};
+
+  public:
+    UdpRxSocket(int port, ssize_t packet_size, const char *hostname = nullptr,
+                int kernel_buffer_size = 0);
+    ~UdpRxSocket();
+    bool ReceivePacket(char *dst) noexcept;
+    int getBufferSize() const;
+    void setBufferSize(int size);
+    ssize_t getPacketSize() const noexcept;
+    void Shutdown();
+
+    // Only for backwards compatibility, this drops the EIGER small pkt, may be
+    // removed
+    ssize_t ReceiveDataOnly(char *dst) noexcept;
+};
+
+} // namespace sls