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diff --git a/src/base/humanize.network.hh b/src/base/humanize.network.hh
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+/**
+ * Copyright (c) 2021, Timothy Stack
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * * Neither the name of Timothy Stack nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef lnav_humanize_network_hh
+#define lnav_humanize_network_hh
+
+#include <string>
+
+#include "fmt/format.h"
+#include "intern_string.hh"
+#include "network.tcp.hh"
+#include "optional.hpp"
+
+namespace fmt {
+
+template<>
+struct formatter<network::locality> {
+    constexpr auto parse(format_parse_context& ctx)
+    {
+        const auto it = ctx.begin();
+        const auto end = ctx.end();
+
+        // Check if reached the end of the range:
+        if (it != end && *it != '}') {
+            throw format_error("invalid format");
+        }
+
+        // Return an iterator past the end of the parsed range:
+        return it;
+    }
+
+    template<typename FormatContext>
+    auto format(const network::locality& l, FormatContext& ctx)
+    {
+        bool is_ipv6 = l.l_hostname.find(':') != std::string::npos;
+
+        return format_to(ctx.out(),
+                         "{}{}{}{}{}",
+                         l.l_username.value_or(std::string()),
+                         l.l_username ? "@" : "",
+                         is_ipv6 ? "[" : "",
+                         l.l_hostname,
+                         is_ipv6 ? "]" : "");
+    }
+};
+
+template<>
+struct formatter<network::path> {
+    constexpr auto parse(format_parse_context& ctx)
+    {
+        const auto it = ctx.begin();
+        const auto end = ctx.end();
+
+        // Check if reached the end of the range:
+        if (it != end && *it != '}') {
+            throw format_error("invalid format");
+        }
+
+        // Return an iterator past the end of the parsed range:
+        return it;
+    }
+
+    template<typename FormatContext>
+    auto format(const network::path& p, FormatContext& ctx)
+    {
+        return format_to(
+            ctx.out(), "{}:{}", p.p_locality, p.p_path == "." ? "" : p.p_path);
+    }
+};
+
+}  // namespace fmt
+
+namespace humanize {
+namespace network {
+namespace path {
+
+nonstd::optional<::network::path> from_str(string_fragment sf);
+
+}  // namespace path
+}  // namespace network
+}  // namespace humanize
+
+#endif