4 files changed, 39 insertions, 15 deletions

diff --git a/lib/edioutput/EDIConfig.h b/lib/edioutput/EDIConfig.h
index 7016e87..de4217f 100644
--- a/lib/edioutput/EDIConfig.h
+++ b/lib/edioutput/EDIConfig.h
@@ -27,6 +27,7 @@
 
 #pragma once
 
+#include <optional>
 #include <vector>
 #include <string>
 #include <memory>
@@ -60,7 +61,7 @@ struct udp_destination_t : public destination_t {
     uint16_t dest_port = 0;
     std::string source_addr;
     uint16_t source_port = 0;
-    uint8_t ttl = 10;
+    std::optional<uint8_t> ttl = std::nullopt;
 };
 
 // TCP server that can accept multiple connections
diff --git a/lib/edioutput/Transport.cpp b/lib/edioutput/Transport.cpp
index e9559b5..3898213 100644
--- a/lib/edioutput/Transport.cpp
+++ b/lib/edioutput/Transport.cpp
@@ -41,10 +41,15 @@ void configuration_t::print() const
         if (auto udp_dest = dynamic_pointer_cast<edi::udp_destination_t>(edi_dest)) {
             etiLog.level(info) << " UDP to " << udp_dest->dest_addr << ":" << udp_dest->dest_port;
             if (not udp_dest->source_addr.empty()) {
-                etiLog.level(info) << "  source      " << udp_dest->source_addr;
-                etiLog.level(info) << "  ttl         " << udp_dest->ttl;
+                etiLog.level(info) << "  source address=" << udp_dest->source_addr;
             }
-            etiLog.level(info) << "  source port " << udp_dest->source_port;
+            if (udp_dest->ttl) {
+                etiLog.level(info) << "  ttl=" << (int)(*udp_dest->ttl);
+            }
+            else {
+                etiLog.level(info) << "  ttl=(default)";
+            }
+            etiLog.level(info) << "  source port=" << udp_dest->source_port;
         }
         else if (auto tcp_dest = dynamic_pointer_cast<edi::tcp_server_t>(edi_dest)) {
             etiLog.level(info) << " TCP listening on port " << tcp_dest->listen_port;
@@ -80,7 +85,10 @@ Sender::Sender(const configuration_t& conf) :
 
             if (not udp_dest->source_addr.empty()) {
                 udp_socket.setMulticastSource(udp_dest->source_addr.c_str());
-                udp_socket.setMulticastTTL(udp_dest->ttl);
+            }
+
+            if (udp_dest->ttl) {
+                udp_socket.setMulticastTTL(*udp_dest->ttl);
             }
 
             auto sender = make_shared<udp_sender_t>(
@@ -99,7 +107,7 @@ Sender::Sender(const configuration_t& conf) :
                     make_shared<PFTSpreader>(tcp_dest->pft_settings, sender));
         }
         else if (auto tcp_dest = dynamic_pointer_cast<edi::tcp_client_t>(edi_dest)) {
-            auto sender = make_shared<tcp_send_client_t>(tcp_dest->dest_addr, tcp_dest->dest_port);
+            auto sender = make_shared<tcp_send_client_t>(tcp_dest->dest_addr, tcp_dest->dest_port, m_conf.verbose);
             m_pft_spreaders.emplace_back(
                     make_shared<PFTSpreader>(tcp_dest->pft_settings, sender));
         }
@@ -199,7 +207,13 @@ void Sender::tcp_dispatcher_t::send_packet(const std::vector<uint8_t> &frame)
 
 void Sender::tcp_send_client_t::send_packet(const std::vector<uint8_t> &frame)
 {
-    sock.sendall(frame);
+    const auto error_stats = sock.sendall(frame);
+
+    if (verbose and error_stats.has_seen_new_errors) {
+        etiLog.level(warn) << "TCP output " << dest_addr << ":" << dest_port
+                          << " has " << error_stats.num_reconnects
+                          << " reconnects: most recent error: " << error_stats.last_error;
+    }
 }
 
 Sender::udp_sender_t::udp_sender_t(std::string dest_addr,
@@ -221,7 +235,11 @@ Sender::tcp_dispatcher_t::tcp_dispatcher_t(uint16_t listen_port,
 }
 
 Sender::tcp_send_client_t::tcp_send_client_t(const std::string &dest_addr,
-                                             uint16_t dest_port) :
+                                             uint16_t dest_port,
+                                             bool verbose) :
+    dest_addr(dest_addr),
+    dest_port(dest_port),
+    verbose(verbose),
     sock(dest_addr, dest_port)
 {
 }
diff --git a/lib/edioutput/Transport.h b/lib/edioutput/Transport.h
index b8a9008..96784c0 100644
--- a/lib/edioutput/Transport.h
+++ b/lib/edioutput/Transport.h
@@ -118,8 +118,13 @@ class Sender {
         struct tcp_send_client_t : public i_sender {
             tcp_send_client_t(
                     const std::string& dest_addr,
-                    uint16_t dest_port);
+                    uint16_t dest_port,
+                    bool verbose);
 
+            std::string dest_addr;
+            uint16_t dest_port;
+            bool verbose;
+            size_t m_num_reconnects_prev = 0;
             Socket::TCPSendClient sock;
             virtual void send_packet(const std::vector<uint8_t> &frame) override;
         };
diff --git a/lib/fec/decode_rs.h b/lib/fec/decode_rs.h
index c165cf3..647b885 100644
--- a/lib/fec/decode_rs.h
+++ b/lib/fec/decode_rs.h
@@ -145,15 +145,15 @@
       count++;
     }
     if (count != no_eras) {
-      printf("count = %d no_eras = %d\n lambda(x) is WRONG\n",count,no_eras);
+      fprintf(stderr, "count = %d no_eras = %d\n lambda(x) is WRONG\n",count,no_eras);
       count = -1;
       goto finish;
     }
 #if DEBUG >= 2
-    printf("\n Erasure positions as determined by roots of Eras Loc Poly:\n");
+    fprintf(stderr, "\n Erasure positions as determined by roots of Eras Loc Poly:\n");
     for (i = 0; i < count; i++)
-      printf("%d ", loc[i]);
-    printf("\n");
+      fprintf(stderr, "%d ", loc[i]);
+    fprintf(stderr, "\n");
 #endif
 #endif
   }
@@ -227,7 +227,7 @@
       continue; /* Not a root */
     /* store root (index-form) and error location number */
 #if DEBUG>=2
-    printf("count %d root %d loc %d\n",count,i,k);
+    fprintf(stderr, "count %d root %d loc %d\n",count,i,k);
 #endif
     root[count] = i;
     loc[count] = k;
@@ -279,7 +279,7 @@
     }
 #if DEBUG >= 1
     if (den == 0) {
-      printf("\n ERROR: denominator = 0\n");
+      fprintf(stderr, "\n ERROR: denominator = 0\n");
       count = -1;
       goto finish;
     }