diff --git a/libdino/src/service/message_processor.vala b/libdino/src/service/message_processor.vala
index 247206f3..ecac4004 100644
--- a/libdino/src/service/message_processor.vala
+++ b/libdino/src/service/message_processor.vala
@@ -459,7 +459,7 @@ public class MessageProcessor : StreamInteractionModule, Object {
                 if (!conversation.type_.is_muc_semantic() && current_own_jid != null && !current_own_jid.equals(message.ourpart)) {
                     message.ourpart = current_own_jid;
                 }
-            } catch (IOStreamError e) {
+            } catch (IOError e) {
                 message.marked = Entities.Message.Marked.UNSENT;
 
                 if (stream != stream_interactor.get_stream(conversation.account)) {
diff --git a/libdino/src/service/reactions.vala b/libdino/src/service/reactions.vala
index 7cd7c146..3621dab1 100644
--- a/libdino/src/service/reactions.vala
+++ b/libdino/src/service/reactions.vala
@@ -37,7 +37,7 @@ public class Dino.Reactions : StreamInteractionModule, Object {
         try {
             send_reactions(conversation, content_item, reactions);
             reaction_added(conversation.account, content_item.id, conversation.account.bare_jid, reaction);
-        } catch (SendError e) {}
+        } catch (IOError e) {}
     }
 
     public void remove_reaction(Conversation conversation, ContentItem content_item, string reaction) {
@@ -46,7 +46,7 @@ public class Dino.Reactions : StreamInteractionModule, Object {
         try {
             send_reactions(conversation, content_item, reactions);
             reaction_removed(conversation.account, content_item.id, conversation.account.bare_jid, reaction);
-        } catch (SendError e) {}
+        } catch (IOError e) {}
     }
 
     public Gee.List<ReactionUsers> get_item_reactions(Conversation conversation, ContentItem content_item) {
@@ -74,12 +74,12 @@ public class Dino.Reactions : StreamInteractionModule, Object {
         }
     }
 
-    private void send_reactions(Conversation conversation, ContentItem content_item, Gee.List<string> reactions) throws SendError {
+    private void send_reactions(Conversation conversation, ContentItem content_item, Gee.List<string> reactions) throws IOError {
         string? message_id = stream_interactor.get_module(ContentItemStore.IDENTITY).get_message_id_for_content_item(conversation, content_item);
-        if (message_id == null) throw new SendError.Misc("No message for content_item");
+        if (message_id == null) throw new IOError.FAILED("No message for content_item");
 
         XmppStream? stream = stream_interactor.get_stream(conversation.account);
-        if (stream == null) throw new SendError.NoStream("");
+        if (stream == null) throw new IOError.NOT_CONNECTED("No stream");
 
         var reactions_module = stream.get_module(Xmpp.Xep.Reactions.Module.IDENTITY);
 
@@ -94,7 +94,7 @@ public class Dino.Reactions : StreamInteractionModule, Object {
                 try {
                     reactions_module.send_reaction.end(res);
                     save_chat_reactions(conversation.account, conversation.account.bare_jid, content_item.id, now_millis, reactions);
-                } catch (SendError e) {}
+                } catch (IOError e) {}
             });
         }
     }
diff --git a/xmpp-vala/src/core/direct_tls_xmpp_stream.vala b/xmpp-vala/src/core/direct_tls_xmpp_stream.vala
index aec17acd..26adc90f 100644
--- a/xmpp-vala/src/core/direct_tls_xmpp_stream.vala
+++ b/xmpp-vala/src/core/direct_tls_xmpp_stream.vala
@@ -13,7 +13,7 @@ public class Xmpp.DirectTlsXmppStream : TlsXmppStream {
         this.on_invalid_cert = on_invalid_cert;
     }
 
-    public override async void connect() throws IOStreamError {
+    public override async void connect() throws IOError {
         SocketClient client = new SocketClient();
         try {
             debug("Connecting to %s:%i (tls)", host, port);
@@ -29,8 +29,10 @@ public class Xmpp.DirectTlsXmppStream : TlsXmppStream {
             yield setup();
 
             attach_negotation_modules();
+        } catch (IOError e) {
+            throw e;
         } catch (Error e) {
-            throw new IOStreamError.CONNECT("Failed connecting to %s:%i (tls): %s", host, port, e.message);
+            throw new IOError.CONNECTION_REFUSED("Failed connecting to %s:%i (tls): %s", host, port, e.message);
         }
     }
 }
diff --git a/xmpp-vala/src/core/io_xmpp_stream.vala b/xmpp-vala/src/core/io_xmpp_stream.vala
index 02653720..208e8053 100644
--- a/xmpp-vala/src/core/io_xmpp_stream.vala
+++ b/xmpp-vala/src/core/io_xmpp_stream.vala
@@ -1,7 +1,7 @@
 using Gee;
 
 public interface Xmpp.WriteNodeFunc : Object {
-    public abstract async void write_stanza(XmppStream stream, StanzaNode node) throws IOStreamError;
+    public abstract async void write_stanza(XmppStream stream, StanzaNode node) throws IOError;
 }
 
 public abstract class Xmpp.IoXmppStream : XmppStream {
@@ -15,10 +15,10 @@ public abstract class Xmpp.IoXmppStream : XmppStream {
         base(remote_name);
     }
 
-    public override async void disconnect() throws IOStreamError, XmlError, IOError {
+    public override async void disconnect() throws IOError {
         disconnected = true;
         if (writer == null || reader == null || stream == null) {
-            throw new IOStreamError.DISCONNECT("trying to disconnect, but no stream open");
+            throw new IOError.CLOSED("trying to disconnect, but no stream open");
         }
         log.str("OUT", "</stream:stream>", this);
         yield writer.write("</stream:stream>");
@@ -35,16 +35,12 @@ public abstract class Xmpp.IoXmppStream : XmppStream {
         require_setup();
     }
 
-    public override async StanzaNode read() throws IOStreamError {
+    public override async StanzaNode read() throws IOError {
         StanzaReader? reader = this.reader;
-        if (reader == null) throw new IOStreamError.READ("trying to read, but no stream open");
-        try {
-            StanzaNode node = yield ((!)reader).read_node();
-            log.node("IN", node, this);
-            return node;
-        } catch (XmlError e) {
-            throw new IOStreamError.READ(e.message);
-        }
+        if (reader == null) throw new IOError.NOT_CONNECTED("trying to read, but no stream open");
+        StanzaNode node = yield ((!)reader).read_node();
+        log.node("IN", node, this);
+        return node;
     }
 
     [Version (deprecated = true, deprecated_since = "0.1", replacement = "write_async")]
@@ -56,18 +52,14 @@ public abstract class Xmpp.IoXmppStream : XmppStream {
         });
     }
 
-    public override async void write_async(StanzaNode node) throws IOStreamError {
+    public override async void write_async(StanzaNode node) throws IOError {
         if (write_obj != null) {
             yield write_obj.write_stanza(this, node);
         } else {
             StanzaWriter? writer = this.writer;
-            if (writer == null) throw new IOStreamError.WRITE("trying to write, but no stream open");
-            try {
-                log.node("OUT", node, this);
-                yield ((!)writer).write_node(node);
-            } catch (XmlError e) {
-                throw new IOStreamError.WRITE(e.message);
-            }
+            if (writer == null) throw new IOError.NOT_CONNECTED("trying to write, but no stream open");
+            log.node("OUT", node, this);
+            yield ((!)writer).write_node(node);
         }
     }
 
@@ -75,7 +67,7 @@ public abstract class Xmpp.IoXmppStream : XmppStream {
         return stream;
     }
 
-    public override async void setup() throws IOStreamError {
+    public override async void setup() throws IOError {
         StanzaNode outs = new StanzaNode.build("stream", "http://etherx.jabber.org/streams")
                 .put_attribute("to", remote_name.to_string())
                 .put_attribute("version", "1.0")
@@ -89,17 +81,11 @@ public abstract class Xmpp.IoXmppStream : XmppStream {
         setup_needed = false;
     }
 
-    private async StanzaNode read_root() throws IOStreamError {
+    private async StanzaNode read_root() throws IOError {
         StanzaReader? reader = this.reader;
-        if (reader == null) throw new IOStreamError.READ("trying to read, but no stream open");
-        try {
-            StanzaNode node = yield ((!)reader).read_root_node();
-            log.node("IN ROOT", node, this);
-            return node;
-        } catch (XmlError.TLS e) {
-            throw new IOStreamError.TLS(e.message);
-        } catch (Error e) {
-            throw new IOStreamError.READ(e.message);
-        }
+        if (reader == null) throw new IOError.NOT_CONNECTED("trying to read, but no stream open");
+        StanzaNode node = yield ((!)reader).read_root_node();
+        log.node("IN ROOT", node, this);
+        return node;
     }
 }
\ No newline at end of file
diff --git a/xmpp-vala/src/core/namespace_state.vala b/xmpp-vala/src/core/namespace_state.vala
index fe83ad09..306b515e 100644
--- a/xmpp-vala/src/core/namespace_state.vala
+++ b/xmpp-vala/src/core/namespace_state.vala
@@ -52,18 +52,18 @@ public class NamespaceState {
         this.current_ns_uri = current_ns_uri;
     }
 
-    public string find_name(string ns_uri) throws XmlError {
+    public string find_name(string ns_uri) throws IOError {
         if (uri_to_name.has_key(ns_uri)) {
             return uri_to_name[ns_uri];
         }
-        throw new XmlError.NS_DICT_ERROR(@"NS URI $ns_uri not found.");
+        throw new IOError.INVALID_DATA(@"XML: NS URI $ns_uri not found.");
     }
 
-    public string find_uri(string name) throws XmlError {
+    public string find_uri(string name) throws IOError {
         if (name_to_uri.has_key(name)) {
             return name_to_uri[name];
         }
-        throw new XmlError.NS_DICT_ERROR(@"NS name $name not found.");
+        throw new IOError.INVALID_DATA(@"XML: NS name $name not found.");
     }
 
     public NamespaceState push() {
diff --git a/xmpp-vala/src/core/stanza_attribute.vala b/xmpp-vala/src/core/stanza_attribute.vala
index c2edeba0..6c6ac579 100644
--- a/xmpp-vala/src/core/stanza_attribute.vala
+++ b/xmpp-vala/src/core/stanza_attribute.vala
@@ -51,7 +51,7 @@ public class StanzaAttribute : StanzaEntry {
         }
     }
 
-    public string to_xml(NamespaceState? state_ = null) throws XmlError {
+    public string to_xml(NamespaceState? state_ = null) {
         NamespaceState state = state_ ?? new NamespaceState();
         if (ns_uri == state.current_ns_uri || (ns_uri == XMLNS_URI && name == "xmlns")) {
             return printf(ATTRIBUTE_XML_NO_NS_FORMAT, true);
@@ -60,7 +60,7 @@ public class StanzaAttribute : StanzaEntry {
         }
     }
 
-    public string to_ansi_xml(NamespaceState? state_ = null) throws XmlError {
+    public string to_ansi_xml(NamespaceState? state_ = null) {
         NamespaceState state = state_ ?? new NamespaceState();
         if (ns_uri == state.current_ns_uri || (ns_uri == XMLNS_URI && name == "xmlns")) {
             return printf(ATTRIBUTE_XML_ANSI_NO_NS_FORMAT, true);
diff --git a/xmpp-vala/src/core/stanza_node.vala b/xmpp-vala/src/core/stanza_node.vala
index 6ef3f0aa..502717c8 100644
--- a/xmpp-vala/src/core/stanza_node.vala
+++ b/xmpp-vala/src/core/stanza_node.vala
@@ -377,7 +377,7 @@ public class StanzaNode : StanzaEntry {
         }
     }
 
-    public string to_xml(NamespaceState? state = null) throws XmlError {
+    public string to_xml(NamespaceState? state = null) throws IOError {
         NamespaceState my_state = state ?? new NamespaceState.for_stanza();
         if (name == "#text") return val == null ? "" : (!)encoded_val;
         my_state = my_state.push();
diff --git a/xmpp-vala/src/core/stanza_reader.vala b/xmpp-vala/src/core/stanza_reader.vala
index 0c07948d..17f0b7b0 100644
--- a/xmpp-vala/src/core/stanza_reader.vala
+++ b/xmpp-vala/src/core/stanza_reader.vala
@@ -6,15 +6,6 @@ public const string XMLNS_URI = "http://www.w3.org/2000/xmlns/";
 public const string XML_URI = "http://www.w3.org/XML/1998/namespace";
 public const string JABBER_URI = "jabber:client";
 
-public errordomain XmlError {
-    NS_DICT_ERROR,
-    UNSUPPORTED,
-    EOF,
-    BAD_XML,
-    IO,
-    TLS
-}
-
 public class StanzaReader {
     private static int BUFFER_MAX = 4096;
 
@@ -44,27 +35,23 @@ public class StanzaReader {
         cancellable.cancel();
     }
 
-    private async void update_buffer() throws XmlError {
-        try {
-            InputStream? input = this.input;
-            if (input == null) throw new XmlError.EOF("No input stream specified and end of buffer reached.");
-            if (cancellable.is_cancelled()) throw new XmlError.EOF("Input stream is canceled.");
-            buffer_fill = (int) yield ((!)input).read_async(buffer, GLib.Priority.DEFAULT, cancellable);
-            if (buffer_fill == 0) throw new XmlError.EOF("End of input stream reached.");
-            buffer_pos = 0;
-        } catch (GLib.IOError e) {
-            throw new XmlError.IO("GLib.IOError: %s".printf(e.message));
-        }
+    private async void update_buffer() throws IOError {
+        InputStream? input = this.input;
+        if (input == null) throw new IOError.CLOSED("No input stream specified and end of buffer reached.");
+        if (cancellable.is_cancelled()) throw new IOError.CANCELLED("Input stream is canceled.");
+        buffer_fill = (int) yield ((!)input).read_async(buffer, GLib.Priority.DEFAULT, cancellable);
+        if (buffer_fill == 0) throw new IOError.CLOSED("End of input stream reached.");
+        buffer_pos = 0;
     }
 
-    private async char read_single() throws XmlError {
+    private async char read_single() throws IOError {
         if (buffer_pos >= buffer_fill) {
             yield update_buffer();
         }
         return (char) buffer[buffer_pos++];
     }
 
-    private async char peek_single() throws XmlError {
+    private async char peek_single() throws IOError {
         if (buffer_pos >= buffer_fill) {
             yield update_buffer();
         }
@@ -79,7 +66,7 @@ public class StanzaReader {
         buffer_pos++;
     }
 
-    private async void skip_until_non_ws() throws XmlError {
+    private async void skip_until_non_ws() throws IOError {
         if (buffer_pos >= buffer_fill) {
             yield update_buffer();
         }
@@ -91,7 +78,7 @@ public class StanzaReader {
         }
     }
 
-    private async string read_until_ws() throws XmlError {
+    private async string read_until_ws() throws IOError {
         var res = new StringBuilder();
         if (buffer_pos >= buffer_fill) {
             yield update_buffer();
@@ -105,7 +92,7 @@ public class StanzaReader {
         return res.str;
     }
 
-    private async string read_until_char_or_ws(char x, char y = 0) throws XmlError {
+    private async string read_until_char_or_ws(char x, char y = 0) throws IOError {
         var res = new StringBuilder();
         if (buffer_pos >= buffer_fill) {
             yield update_buffer();
@@ -119,7 +106,7 @@ public class StanzaReader {
         return res.str;
     }
 
-    private async string read_until_char(char x) throws XmlError {
+    private async string read_until_char(char x) throws IOError {
         var res = new StringBuilder();
         if (buffer_pos >= buffer_fill) {
             yield update_buffer();
@@ -133,7 +120,7 @@ public class StanzaReader {
         return res.str;
     }
 
-    private async StanzaAttribute read_attribute() throws XmlError {
+    private async StanzaAttribute read_attribute() throws IOError {
         var res = new StanzaAttribute();
         res.name = yield read_until_char_or_ws('=');
         if ((yield read_single()) == '=') {
@@ -149,7 +136,7 @@ public class StanzaReader {
         return res;
     }
 
-    private void handle_entry_ns(StanzaEntry entry, string default_uri = ns_state.current_ns_uri) throws XmlError {
+    private void handle_entry_ns(StanzaEntry entry, string default_uri = ns_state.current_ns_uri) throws IOError {
         if (entry.ns_uri != null) return;
         if (entry.name.contains(":")) {
             var split = entry.name.split(":");
@@ -160,7 +147,7 @@ public class StanzaReader {
         }
     }
 
-    private void handle_stanza_ns(StanzaNode res) throws XmlError {
+    private void handle_stanza_ns(StanzaNode res) throws IOError {
         foreach (StanzaAttribute attr in res.attributes) {
             if (attr.name == "xmlns" && attr.val != null) {
                 attr.ns_uri = XMLNS_URI;
@@ -180,7 +167,7 @@ public class StanzaReader {
         }
     }
 
-    public async StanzaNode read_node_start() throws XmlError {
+    public async StanzaNode read_node_start() throws IOError {
         var res = new StanzaNode();
         res.attributes = new ArrayList<StanzaAttribute>();
         var eof = false;
@@ -217,7 +204,7 @@ public class StanzaReader {
         return res;
     }
 
-    public async StanzaNode read_text_node() throws XmlError {
+    public async StanzaNode read_text_node() throws IOError {
         var res = new StanzaNode();
         res.name = "#text";
         res.ns_uri = ns_state.current_ns_uri;
@@ -225,7 +212,7 @@ public class StanzaReader {
         return res;
     }
 
-    public async StanzaNode read_root_node() throws XmlError {
+    public async StanzaNode read_root_node() throws IOError {
         yield skip_until_non_ws();
         if ((yield peek_single()) == '<') {
             var res = yield read_node_start();
@@ -234,11 +221,11 @@ public class StanzaReader {
             }
             return res;
         } else {
-            throw new XmlError.BAD_XML("Content before root node");
+            throw new IOError.INVALID_DATA("XML: Content before root node");
         }
     }
 
-    public async StanzaNode read_stanza_node() throws XmlError {
+    public async StanzaNode read_stanza_node() throws IOError {
         try {
             ns_state = ns_state.push();
             var res = yield read_node_start();
@@ -255,11 +242,11 @@ public class StanzaReader {
                             skip_single();
                             if (desc.contains(":")) {
                                 var split = desc.split(":");
-                                if (split[0] != ns_state.find_name((!)res.ns_uri)) throw new XmlError.BAD_XML("");
-                                if (split[1] != res.name) throw new XmlError.BAD_XML("");
+                                if (split[0] != ns_state.find_name((!)res.ns_uri)) throw new IOError.INVALID_DATA("XML: Closing namespace prefix mismatch");
+                                if (split[1] != res.name) throw new IOError.INVALID_DATA("XML: Closing element name mismatch");
                             } else {
-                                if (ns_state.current_ns_uri != res.ns_uri) throw new XmlError.BAD_XML("");
-                                if (desc != res.name) throw new XmlError.BAD_XML("");
+                                if (ns_state.current_ns_uri != res.ns_uri) throw new IOError.INVALID_DATA("XML: Closing element namespace mismatch");
+                                if (desc != res.name) throw new IOError.INVALID_DATA("XML: Closing element name mismatch");
                             }
                             finish_node_seen = true;
                         } else {
@@ -277,15 +264,15 @@ public class StanzaReader {
             }
             ns_state = ns_state.pop();
             return res;
-        } catch (XmlError e) {
+        } catch (IOError.INVALID_DATA e) {
             uint8[] buffer_cpy = new uint8[buffer.length + 1];
             Memory.copy(buffer_cpy, buffer, buffer.length);
-            warning("XmlError at: %s".printf((string)buffer_cpy) + "\n");
+            warning("invalid data at: %s".printf((string)buffer_cpy) + "\n");
             throw e;
         }
     }
 
-    public async StanzaNode read_node() throws XmlError {
+    public async StanzaNode read_node() throws IOError {
         yield skip_until_non_ws();
         if ((yield peek_single()) == '<') {
             return yield read_stanza_node();
diff --git a/xmpp-vala/src/core/stanza_writer.vala b/xmpp-vala/src/core/stanza_writer.vala
index 62fe022a..5b926a93 100644
--- a/xmpp-vala/src/core/stanza_writer.vala
+++ b/xmpp-vala/src/core/stanza_writer.vala
@@ -12,11 +12,11 @@ public class StanzaWriter {
         this.output = output;
     }
 
-    public async void write_node(StanzaNode node) throws XmlError {
+    public async void write_node(StanzaNode node) throws IOError {
         yield write_data(node.to_xml().data);
     }
 
-    public async void write_nodes(StanzaNode node1, StanzaNode node2) throws XmlError {
+    public async void write_nodes(StanzaNode node1, StanzaNode node2) throws IOError {
         var data1 = node1.to_xml().data;
         var data2 = node2.to_xml().data;
 
@@ -32,11 +32,11 @@ public class StanzaWriter {
         yield write_data(concat);
     }
 
-    public async void write(string s) throws XmlError {
+    public async void write(string s) throws IOError {
         yield write_data(s.data);
     }
 
-    private async void write_data(owned uint8[] data) throws XmlError {
+    private async void write_data(owned uint8[] data) throws IOError {
         if (running) {
             queue.push_tail(new SourceFuncWrapper(write_data.callback));
             yield;
@@ -44,9 +44,12 @@ public class StanzaWriter {
         running = true;
         try {
             yield output.write_all_async(data, 0, null, null);
+        } catch (IOError e) {
+            cancel();
+            throw e;
         } catch (GLib.Error e) {
             cancel();
-            throw new XmlError.IO(@"IOError in GLib: $(e.message)");
+            throw new IOError.FAILED("Error in GLib: %s".printf(e.message));
         } finally {
             SourceFuncWrapper? sfw = queue.pop_head();
             if (sfw != null) {
diff --git a/xmpp-vala/src/core/starttls_xmpp_stream.vala b/xmpp-vala/src/core/starttls_xmpp_stream.vala
index 2334f664..0d4fbc7d 100644
--- a/xmpp-vala/src/core/starttls_xmpp_stream.vala
+++ b/xmpp-vala/src/core/starttls_xmpp_stream.vala
@@ -13,7 +13,7 @@ public class Xmpp.StartTlsXmppStream : TlsXmppStream {
         this.on_invalid_cert = on_invalid_cert;
     }
 
-    public override async void connect() throws IOStreamError {
+    public override async void connect() throws IOError {
         try {
             SocketClient client = new SocketClient();
             debug("Connecting to %s:%i (starttls)", host, port);
@@ -50,8 +50,10 @@ public class Xmpp.StartTlsXmppStream : TlsXmppStream {
             yield setup();
 
             attach_negotation_modules();
+        } catch (IOError e) {
+            throw e;
         } catch (Error e) {
-            throw new IOStreamError.CONNECT("Failed connecting to %s:%i (starttls): %s", host, port, e.message);
+            throw new IOError.CONNECTION_REFUSED("Failed connecting to %s:%i (starttls): %s", host, port, e.message);
         }
     }
 }
diff --git a/xmpp-vala/src/core/stream_connect.vala b/xmpp-vala/src/core/stream_connect.vala
index 833c5131..a4c5b82e 100644
--- a/xmpp-vala/src/core/stream_connect.vala
+++ b/xmpp-vala/src/core/stream_connect.vala
@@ -10,7 +10,7 @@ namespace Xmpp {
     public class XmppStreamResult {
         public TlsXmppStream? stream { get; set; }
         public TlsCertificateFlags? tls_errors { get; set; }
-        public IOStreamError? io_error { get; set; }
+        public IOError? io_error { get; set; }
     }
 
     public async XmppStreamResult establish_stream(Jid bare_jid, Gee.List<XmppStreamModule> modules, string? log_options, owned TlsXmppStream.OnInvalidCert on_invalid_cert) {
@@ -55,7 +55,7 @@ namespace Xmpp {
         // Try all connection options from lowest to highest priority
         TlsXmppStream? stream = null;
         TlsCertificateFlags? tls_errors = null;
-        IOStreamError? io_error = null;
+        IOError? io_error = null;
         foreach (SrvTargetInfo target in targets) {
             try {
                 if (target.service == "xmpp-client") {
@@ -72,7 +72,7 @@ namespace Xmpp {
                 yield stream.connect();
 
                 return new XmppStreamResult() { stream=stream };
-            } catch (IOStreamError e) {
+            } catch (IOError e) {
                 warning("Could not establish XMPP session with %s:%i: %s", target.host, target.port, e.message);
 
                 if (stream != null) {
diff --git a/xmpp-vala/src/core/xmpp_stream.vala b/xmpp-vala/src/core/xmpp_stream.vala
index 0f0793e9..6370554f 100644
--- a/xmpp-vala/src/core/xmpp_stream.vala
+++ b/xmpp-vala/src/core/xmpp_stream.vala
@@ -1,13 +1,5 @@
 using Gee;
 
-public errordomain Xmpp.IOStreamError {
-    READ,
-    WRITE,
-    CONNECT,
-    DISCONNECT,
-    TLS
-}
-
 public abstract class Xmpp.XmppStream {
 
     public signal void received_node(XmppStream stream, StanzaNode node);
@@ -38,18 +30,18 @@ public abstract class Xmpp.XmppStream {
         this.remote_name = remote_name;
     }
 
-    public abstract async void connect() throws IOStreamError;
+    public abstract async void connect() throws IOError;
 
-    public abstract async void disconnect() throws IOStreamError, XmlError, IOError;
+    public abstract async void disconnect() throws IOError;
 
-    public abstract async StanzaNode read() throws IOStreamError;
+    public abstract async StanzaNode read() throws IOError;
 
     [Version (deprecated = true, deprecated_since = "0.1", replacement = "write_async")]
     public abstract void write(StanzaNode node);
 
-    public abstract async void write_async(StanzaNode node) throws IOStreamError;
+    public abstract async void write_async(StanzaNode node) throws IOError;
 
-    public abstract async void setup() throws IOStreamError;
+    public abstract async void setup() throws IOError;
 
     public void require_setup() {
         setup_needed = true;
@@ -105,7 +97,7 @@ public abstract class Xmpp.XmppStream {
         return null;
     }
 
-    public async void loop() throws IOStreamError {
+    public async void loop() throws IOError {
         while (true) {
             if (setup_needed) {
                 yield setup();
@@ -168,7 +160,7 @@ public abstract class Xmpp.XmppStream {
         return false;
     }
 
-    private bool negotiation_modules_done() throws IOStreamError {
+    private bool negotiation_modules_done() throws IOError {
         if (setup_needed) return false;
         if (is_negotiation_active()) return false;
 
@@ -176,7 +168,7 @@ public abstract class Xmpp.XmppStream {
             if (module is XmppStreamNegotiationModule) {
                 XmppStreamNegotiationModule negotiation_module = (XmppStreamNegotiationModule) module;
                 if (negotiation_module.mandatory_outstanding(this)) {
-                    throw new IOStreamError.CONNECT("mandatory-to-negotiate feature not negotiated: " + negotiation_module.get_id());
+                    throw new IOError.FAILED("mandatory-to-negotiate feature not negotiated: " + negotiation_module.get_id());
                 }
             }
         }
diff --git a/xmpp-vala/src/module/message/module.vala b/xmpp-vala/src/module/message/module.vala
index ef39a663..bb63bca4 100644
--- a/xmpp-vala/src/module/message/module.vala
+++ b/xmpp-vala/src/module/message/module.vala
@@ -15,13 +15,9 @@ namespace Xmpp {
         public signal void received_error(XmppStream stream, MessageStanza message, ErrorStanza error);
         public signal void received_message_unprocessed(XmppStream stream, MessageStanza message);
 
-        public async void send_message(XmppStream stream, MessageStanza message) throws IOStreamError {
+        public async void send_message(XmppStream stream, MessageStanza message) throws IOError {
             yield send_pipeline.run(stream, message);
-            try {
-                yield stream.write_async(message.stanza);
-            } catch (IOStreamError e) {
-                throw new SendError.IO(e.message);
-            }
+            yield stream.write_async(message.stanza);
         }
 
         public async void received_message_stanza_async(XmppStream stream, StanzaNode node) {
diff --git a/xmpp-vala/src/module/xep/0198_stream_management.vala b/xmpp-vala/src/module/xep/0198_stream_management.vala
index 5ce208f1..340c4e6f 100644
--- a/xmpp-vala/src/module/xep/0198_stream_management.vala
+++ b/xmpp-vala/src/module/xep/0198_stream_management.vala
@@ -25,7 +25,7 @@ public class Module : XmppStreamNegotiationModule, WriteNodeFunc {
         }
     }
 
-    public async void write_stanza(XmppStream stream, StanzaNode node) throws IOStreamError {
+    public async void write_stanza(XmppStream stream, StanzaNode node) throws IOError {
         var promise = new Promise<IOError?>();
 
         node_queue.add(new QueueItem(node, promise));
@@ -34,7 +34,7 @@ public class Module : XmppStreamNegotiationModule, WriteNodeFunc {
         try {
             yield promise.future.wait_async();
         } catch (FutureError e) {
-            throw new IOStreamError.WRITE("Future returned error %i".printf(e.code));
+            throw new IOError.FAILED("Future returned error %i".printf(e.code));
         }
     }
 
@@ -50,7 +50,7 @@ public class Module : XmppStreamNegotiationModule, WriteNodeFunc {
             } else {
                 yield ((!)writer).write_node(node);
             }
-        } catch (XmlError e) { }
+        } catch (IOError e) { }
     }
 
     private void check_queue(XmppStream stream) {
@@ -158,7 +158,7 @@ public class Module : XmppStreamNegotiationModule, WriteNodeFunc {
                         handle_incoming_h(stream, h_outbound);
                     }
                     foreach (var id in in_flight_stanzas.keys) {
-                        in_flight_stanzas[id].promise.set_exception(new IOStreamError.WRITE("Stanza not acked and session not resumed"));
+                        in_flight_stanzas[id].promise.set_exception(new IOError.FAILED("Stanza not acked and session not resumed"));
                     }
                     in_flight_stanzas.clear();
                     check_queue(stream);
diff --git a/xmpp-vala/src/module/xep/0444_reactions.vala b/xmpp-vala/src/module/xep/0444_reactions.vala
index 6e76f1f0..877d3070 100644
--- a/xmpp-vala/src/module/xep/0444_reactions.vala
+++ b/xmpp-vala/src/module/xep/0444_reactions.vala
@@ -11,7 +11,7 @@ public class Module : XmppStreamModule {
 
     private ReceivedPipelineListener received_pipeline_listener = new ReceivedPipelineListener();
 
-    public async void send_reaction(XmppStream stream, Jid jid, string stanza_type, string message_id, Gee.List<string> reactions) throws SendError {
+    public async void send_reaction(XmppStream stream, Jid jid, string stanza_type, string message_id, Gee.List<string> reactions) throws IOError {
         StanzaNode reactions_node = new StanzaNode.build("reactions", NS_URI).add_self_xmlns();
         reactions_node.put_attribute("id", message_id);
         foreach (string reaction in reactions) {
diff --git a/xmpp-vala/src/util.vala b/xmpp-vala/src/util.vala
index fda21f88..6c0d0c9b 100644
--- a/xmpp-vala/src/util.vala
+++ b/xmpp-vala/src/util.vala
@@ -38,11 +38,3 @@ public long from_hex(string numeral) {
 }
 
 }
-
-namespace Xmpp {
-    public errordomain SendError {
-        IO,
-        NoStream,
-        Misc
-    }
-}
diff --git a/xmpp-vala/tests/stanza.vala b/xmpp-vala/tests/stanza.vala
index b1fce46d..cd374912 100644
--- a/xmpp-vala/tests/stanza.vala
+++ b/xmpp-vala/tests/stanza.vala
@@ -65,7 +65,7 @@ class StanzaTest : Gee.TestCase {
         try {
             yield reader.read_node();
             fail_if_reached("end of stream should be reached");
-        } catch (XmlError.EOF e) {
+        } catch (IOError.CLOSED e) {
             return;
         } catch (Error e) {
             fail_if_reached("Unexpected error");