diff --git a/src/http2_server.jl b/src/http2_server.jl
index 92e0074da..e388778b9 100644
--- a/src/http2_server.jl
+++ b/src/http2_server.jl
@@ -1034,6 +1034,27 @@ function _write_response_body_h2_server!(
 )::Nothing
     body = response.body
     body isa EmptyBody && return nothing
+    if body isa BytesBody
+        bytes_body = body::BytesBody
+        try
+            if body_closed(bytes_body)
+                end_stream && _write_frame_h2_server_threadsafe!(write_lock, conn, DataFrame(stream_id, true, UInt8[]), write_deadline_ns)
+                return nothing
+            end
+            first = bytes_body.next_index
+            last = length(bytes_body.data)
+            if first <= last
+                data = first == 1 ? bytes_body.data : @view(bytes_body.data[first:last])
+                _write_data_frames_h2_server!(conn, write_lock, send_state, stream_id, data; end_stream=end_stream, write_deadline_ns=write_deadline_ns)
+                bytes_body.next_index = last + 1
+            elseif end_stream
+                _write_frame_h2_server_threadsafe!(write_lock, conn, DataFrame(stream_id, true, UInt8[]), write_deadline_ns)
+            end
+        finally
+            body_close!(bytes_body)
+        end
+        return nothing
+    end
     if body isa AbstractString
         # Zero-copy fast path: alias the String's codeunits (immutable) instead
         # of allocating a fresh Vector{UInt8} of the same length.
diff --git a/test/http2_server_tests.jl b/test/http2_server_tests.jl
index be9bebccf..f2ba86082 100644
--- a/test/http2_server_tests.jl
+++ b/test/http2_server_tests.jl
@@ -196,6 +196,107 @@ end
     end
 end
 
+@testset "HTTP/2 server writes unread BytesBody response bytes directly" begin
+    payload = collect(codeunits("abcdef"))
+    returned_body = Ref{Union{Nothing,HT.BytesBody}}(nothing)
+    server = HT.serve!("127.0.0.1", 0; listenany = true) do request
+        _ = request
+        body = HT.BytesBody(copy(payload))
+        scratch = Vector{UInt8}(undef, 2)
+        @test HT.body_read!(body, scratch) == 2
+        @test scratch == UInt8[0x61, 0x62]
+        returned_body[] = body
+        return HT.Response(200, body; content_length = 4, proto_major = 2, proto_minor = 0)
+    end
+    address = HT.server_addr(server)
+    conn = HT.connect_h2!(address; secure = false)
+    try
+        req = HT.Request("GET", "/bytesbody"; host = address, body = HT.EmptyBody(), content_length = 0, proto_major = 2, proto_minor = 0)
+        res = HT.h2_roundtrip!(conn, req)
+        @test res.status == 200
+        @test String(_read_all_h2_server(res.body)) == "cdef"
+        @test returned_body[] !== nothing
+        returned = returned_body[]::HT.BytesBody
+        @test HT.body_closed(returned)
+        @test HT.body_read!(returned, Vector{UInt8}(undef, 1)) == 0
+    finally
+        close(conn)
+        HT.forceclose(server)
+        _ = timedwait(() -> istaskdone(server.serve_task::Task), 3.0; pollint = 0.001)
+    end
+end
+
+@testset "HTTP/2 server handles empty and closed BytesBody responses" begin
+    closed_body = Ref{Union{Nothing,HT.BytesBody}}(nothing)
+    empty_body = Ref{Union{Nothing,HT.BytesBody}}(nothing)
+    server = HT.serve!("127.0.0.1", 0; listenany = true) do request
+        if request.target == "/closed"
+            body = HT.BytesBody(UInt8[0x78])
+            HT.body_close!(body)
+            closed_body[] = body
+            return HT.Response(200, body; content_length = 0, proto_major = 2, proto_minor = 0)
+        end
+        body = HT.BytesBody(UInt8[])
+        empty_body[] = body
+        return HT.Response(200, body; content_length = 0, proto_major = 2, proto_minor = 0)
+    end
+    address = HT.server_addr(server)
+    conn = HT.connect_h2!(address; secure = false)
+    try
+        for target in ("/closed", "/empty")
+            req = HT.Request("GET", target; host = address, body = HT.EmptyBody(), content_length = 0, proto_major = 2, proto_minor = 0)
+            res = HT.h2_roundtrip!(conn, req)
+            @test res.status == 200
+            @test isempty(_read_all_h2_server(res.body))
+        end
+        @test closed_body[] !== nothing
+        @test empty_body[] !== nothing
+        @test HT.body_closed(closed_body[]::HT.BytesBody)
+        @test HT.body_closed(empty_body[]::HT.BytesBody)
+    finally
+        close(conn)
+        HT.forceclose(server)
+        _ = timedwait(() -> istaskdone(server.serve_task::Task), 3.0; pollint = 0.001)
+    end
+end
+
+@testset "HTTP/2 server writes vector responses with trailers" begin
+    server = HT.serve!("127.0.0.1", 0; listenany = true) do request
+        _ = request
+        trailers = HT.Headers()
+        HT.setheader(trailers, "X-Trailer", "done")
+        return HT.Response(200, UInt8[0x6f, 0x6b]; trailers = trailers, content_length = 2, proto_major = 2, proto_minor = 0)
+    end
+    address = HT.server_addr(server)
+    conn, reader = _open_raw_h2_server_conn(address)
+    encoder = HT.Encoder()
+    decoder = HT.Decoder()
+    try
+        _write_h2_server_request_headers!(conn, encoder, UInt32(1), address, "/vector-trailers")
+        headers_frame, header_block, _ = _read_h2_server_header_block!(conn, reader)
+        decoded_headers = HT.decode_header_block(decoder, header_block)
+        @test any(field -> field.name == ":status" && field.value == "200", decoded_headers)
+        @test !headers_frame.end_stream
+
+        data_frame = _read_h2_server_frame!(conn, reader)
+        while data_frame isa HT.WindowUpdateFrame || data_frame isa HT.SettingsFrame || data_frame isa HT.PingFrame
+            data_frame = _read_h2_server_frame!(conn, reader)
+        end
+        @test data_frame isa HT.DataFrame
+        @test String((data_frame::HT.DataFrame).data) == "ok"
+        @test !(data_frame::HT.DataFrame).end_stream
+
+        trailer_frame, trailer_block, _ = _read_h2_server_header_block!(conn, reader)
+        decoded_trailers = HT.decode_header_block(decoder, trailer_block)
+        @test any(field -> field.name == "x-trailer" && field.value == "done", decoded_trailers)
+        @test trailer_frame.end_stream
+    finally
+        HTTP.@try_ignore NC.close(conn)
+        HT.forceclose(server)
+        _ = timedwait(() -> istaskdone(server.serve_task::Task), 3.0; pollint = 0.001)
+    end
+end
+
 @testset "HTTP/2 server servecontent supports ranges and conditionals" begin
     payload = collect(codeunits("abcdef"))
     modtime = Dates.DateTime(2024, 1, 2, 3, 4, 5)
diff --git a/test/http_server_http1_tests.jl b/test/http_server_http1_tests.jl
index b83495664..4330814f0 100644
--- a/test/http_server_http1_tests.jl
+++ b/test/http_server_http1_tests.jl
@@ -649,17 +649,17 @@ end
         end
     address = HT.server_addr(server)
     try
-        head_raw = _raw_http_request(HT.port(server), "HEAD /head HTTP/1.1\r\nHost: $(address)\r\nConnection: close\r\n\r\n"; settle_s = 0.3)
+        head_raw = _raw_http_request(HT.port(server), "HEAD /head HTTP/1.1\r\nHost: $(address)\r\nConnection: close\r\n\r\n"; settle_s = 0.3, wait_for_first_byte = true)
         @test occursin("HTTP/1.1 200 OK", head_raw)
         @test !occursin("oops", head_raw)
         @test !occursin("transfer-encoding: chunked", lowercase(head_raw))
 
-        no_content_raw = _raw_http_request(HT.port(server), "GET /nocontent HTTP/1.1\r\nHost: $(address)\r\nConnection: close\r\n\r\n"; settle_s = 0.3)
+        no_content_raw = _raw_http_request(HT.port(server), "GET /nocontent HTTP/1.1\r\nHost: $(address)\r\nConnection: close\r\n\r\n"; settle_s = 0.3, wait_for_first_byte = true)
         @test occursin("HTTP/1.1 204 No Content", no_content_raw)
         @test !occursin("oops", no_content_raw)
         @test !occursin("transfer-encoding: chunked", lowercase(no_content_raw))
 
-        not_modified_raw = _raw_http_request(HT.port(server), "GET /notmodified HTTP/1.1\r\nHost: $(address)\r\nConnection: close\r\n\r\n"; settle_s = 0.3)
+        not_modified_raw = _raw_http_request(HT.port(server), "GET /notmodified HTTP/1.1\r\nHost: $(address)\r\nConnection: close\r\n\r\n"; settle_s = 0.3, wait_for_first_byte = true)
         @test occursin("HTTP/1.1 304 Not Modified", not_modified_raw)
         @test !occursin("oops", not_modified_raw)
         @test !occursin("transfer-encoding: chunked", lowercase(not_modified_raw))
diff --git a/test/trim_compile_tests.jl b/test/trim_compile_tests.jl
index 20a9fd4a3..0d237b17c 100644
--- a/test/trim_compile_tests.jl
+++ b/test/trim_compile_tests.jl
@@ -5,7 +5,14 @@ const _TRIM_SUPPORTED = VERSION >= v"1.12.0-rc1"
 const _JULIAC_ENTRYPOINT_EXPR = "using JuliaC; if isdefined(JuliaC, :main); JuliaC.main(ARGS); else JuliaC._main_cli(ARGS); end"
 
 function _trim_compile_timeout_s()::Float64
-    default = Sys.iswindows() ? "1200.0" : "120.0"
+    default = if Sys.iswindows()
+        "1200.0"
+    elseif (VERSION.major, VERSION.minor) >= (1, 13)
+        # Julia pre can spend most of the old budget precompiling before JuliaC compiles.
+        "240.0"
+    else
+        "120.0"
+    end
     return parse(Float64, get(ENV, "HTTP_TRIM_COMPILE_TIMEOUT_S", default))
 end