initial commit

src/Subscription.h

@@ -0,0 +1,58 @@
+#pragma once
+
+#include "filters.h"
+
+
+struct SubId {
+    char buf[40];
+
+    SubId(std::string_view val) {
+        static_assert(MAX_SUBID_SIZE == 39, "MAX_SUBID_SIZE mismatch");
+        if (val.size() > 39) throw herr("subscription id too long");
+        if (val.size() == 0) throw herr("subscription id too short");
+
+        auto badChar = [](char c){
+            return c < 0x20 || c == '\\' || c == '"' || c >= 0x7F;
+        };
+
+        if (std::any_of(val.begin(), val.end(), badChar)) throw herr("invalid character in subscription id");
+
+        buf[0] = (char)val.size();
+        memcpy(&buf[1], val.data(), val.size());
+    }
+
+    std::string_view sv() const {
+        return std::string_view(&buf[1], (size_t)buf[0]);
+    }
+
+    std::string str() const {
+        return std::string(sv());
+    }
+};
+
+inline bool operator <(const SubId &s1, const SubId &s2) {
+    return s1.sv() < s2.sv();
+}
+
+
+struct Subscription : NonCopyable {
+    Subscription(uint64_t connId_, std::string subId_, NostrFilterGroup filterGroup_) : connId(connId_), subId(subId_), filterGroup(filterGroup_) {}
+
+    // Params
+
+    uint64_t connId;
+    SubId subId;
+    NostrFilterGroup filterGroup;
+
+    // State
+
+    uint64_t latestEventId = MAX_U64;
+};
+
+
+struct ConnIdSubId {
+    uint64_t connId;
+    SubId subId;
+};
+
+using RecipientList = std::vector<ConnIdSubId>;