add endpoint type

src/proto/conn.c

@@ -41,6 +41,9 @@ bravais_result_t bravais_conn_create(const bravais_config_t* config, bravais_con
 
     newConn->config = *config;
     newConn->state = BRAVAIS_CONN_STATE_IDLE;
+    // calloc() already zeroes
+    //memset(&newConn->remoteEndpoint, 0, sizeof(newConn->remoteEndpoint));
+    //memset(&newConn->localEndpoint, 0, sizeof(newConn->localEndpoint));
 
     conn_log(newConn, BRAVAIS_LOG_LEVEL_DEBUG, "Connection created");
     *outConn = newConn;

src/proto/conn.h

@@ -7,6 +7,7 @@
 #define BRAVAIS_CONN_H
 
 #include "bravais.h"
+#include "proto/endpoint.h"
 
 typedef enum {
     BRAVAIS_CONN_STATE_IDLE,
@@ -18,6 +19,8 @@ typedef enum {
 struct bravais_conn {
     bravais_config_t config;
     bravais_conn_state_t state;
+    bravais_endpoint_t remoteEndpoint;
+    bravais_endpoint_t localEndpoint; // This is here since the local endpoint, if we're initiating a connection, may not have a standard port number.
 };
 
 #endif // BRAVAIS_CONN_H

src/proto/endpoint.c

@@ -0,0 +1,10 @@
+// endpoint.c
+// Endpoint internals for the lib
+
+#include "proto/endpoint.h"
+
+bool bravais_endpoint_is_ipv4(const bravais_endpoint_t* endpoint) {
+    if (!endpoint) { return false; }
+
+    return memcmp(endpoint->address, bravaisEndpointMappedIPv4Prefix, sizeof(bravaisEndpointMappedIPv4Prefix)) == 0;
+}

src/proto/endpoint.h

@@ -0,0 +1,21 @@
+// endpoint.h
+// Endpoint internals for the lib
+
+#ifndef BRAVAIS_ENDPOINT_H
+#define BRAVAIS_ENDPOINT_H
+
+#include <stdint.h>
+#include <stddef.h>
+#include <string.h>
+#include <stdlib.h>
+
+static const uint8_t bravaisEndpointMappedIPv4Prefix[12] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff };
+
+typedef struct bravais_endpoint {
+    uint8_t address[16]; // IPv6 address (or IPv4-mapped IPv6) - network byte order
+    uint16_t port;       // Port number - host byte order
+} bravais_endpoint_t;
+
+bool bravais_endpoint_is_ipv4(const bravais_endpoint_t* endpoint);
+
+#endif // BRAVAIS_ENDPOINT_H