initial

modules/network/include/NetworkError.hpp

@@ -0,0 +1,70 @@
+#pragma once
+
+#include <cerrno>
+#include <cstring>
+#include <string>
+namespace tw::net {
+
+
+enum NetworkErrorType {
+    MESSAGE_TOO_LONG = 90,
+    ADDRESS_FAMILY_NOT_SUPPORTED = 97,
+    BAD_FILE_DESCRIPTOR = 9,
+    CONNECTION_RESET = 104,
+    WOULD_BLOCK = 11,
+    INTERRUPED = 4,
+    INVALID_ARGUMENT = 22,
+    NOT_CONNECTED = 107,
+    NOT_SOCKET = 88,
+    OPERATION_NOT_SUPPORTED = 95,
+    TIMED_OUT = 110,
+    IO_ERROR = 5,
+    NO_BUFFER_SPACE = 105,
+    NOT_ENOUGH_MEMORY = 12,
+    DESTINATION_ADDRESS_REQUIRED = 89,
+    BROKEN_PIPE = 32
+};
+
+struct NetworkError {
+    NetworkErrorType m_type;
+
+public:
+    static NetworkError from_errno(int err) {
+        return { static_cast<NetworkErrorType>(err) };
+    }
+
+    std::string message() const {
+        switch (m_type) {
+            case BAD_FILE_DESCRIPTOR:
+                return "The socket is not a valid file descriptor";
+            case CONNECTION_RESET:
+                return "A connection was forcibly closed by a peer.";
+            case INTERRUPED:
+                return "The function was interrupted by a signal that was caught, before any data was available.";
+            case INVALID_ARGUMENT:
+                return "The MSG_OOB flag is set and no out-of-band data is available.";
+            case NOT_CONNECTED:
+                return "A function is attempted on connection-mode socket that is not connected.";
+            case NOT_SOCKET:
+                return "Socket operation on non-socket.";
+            case OPERATION_NOT_SUPPORTED:
+                return "The specified flags are not supported for this socket type or protocol.";
+            case TIMED_OUT:
+                return "The connection timed out during connection establishment, or due to a transmission timeout on active connection.";
+            case IO_ERROR:
+                return "An I/O error occurred while reading from or writing to the file system.";
+            case NO_BUFFER_SPACE:
+                return "Insufficient resources were available in the system to perform the operation.";
+            case NOT_ENOUGH_MEMORY:
+                return "Insufficient memory was available to complete the operation.";
+            case DESTINATION_ADDRESS_REQUIRED:
+                return "The destination address is required for this operation.";
+            case BROKEN_PIPE:
+                return "The write end of a pipe or socket has been closed.";
+            default:
+                return std::string(strerror(static_cast<int>(m_type)));
+        }
+    }
+};
+
+}