@app.middleware("http")
async def custom_middleware(
    request: Request, call_next: Callable[[Request], Awaitable[Response]]
):
    response = await call_next(request)
    response.headers["custom"] = "foo"
    return response


@app.get("/user", dependencies=[Depends(set_up_request_state_dependency)])
def get_user():
    request_state = legacy_request_state_context_var.get()
    assert request_state

background-color:#aaaaaa; } td a img { border-width:0; margin-left:5pt; vertical-align:middle;} <!-- var number = /^\d*$/; function showTable(title, headers, content) { text = "<h3>" + title + "</h3><p>"; if (content.length > 0) { text += "<table border=\"1\" cellpadding=\"5\" cellspacing=\"0\">"; if (headers.length > 0) { text += "<tr>"; headerArray = headers.split(","); for (i = 0; i < headerArray.length; i++) { text += "<th>" + headerArray[i] + "</th>"; } text += "</tr>"; } rows = content.split(";");...

from fastapi import FastAPI, Header
from pydantic import BaseModel

app = FastAPI()


class CommonHeaders(BaseModel):
    host: str
    save_data: bool
    if_modified_since: str | None = None
    traceparent: str | None = None
    x_tag: list[str] = []


@app.get("/items/")
async def read_items(headers: CommonHeaders = Header()):

        .header("User-Agent", "OkHttp Headers.java")
        .addHeader("Accept", "application/json; q=0.5")
        .addHeader("Accept", "application/vnd.github.v3+json")
        .build()

    client.newCall(request).execute().use { response ->
      if (!response.isSuccessful) throw IOException("Unexpected code $response")

      println("Server: ${response.header("Server")}")

    return {"scheme": credentials.scheme, "credentials": credentials.credentials}


client = TestClient(app)


def test_security_http_bearer():
    response = client.get("/users/me", headers={"Authorization": "Bearer foobar"})
    assert response.status_code == 200, response.text
    assert response.json() == {"scheme": "Bearer", "credentials": "foobar"}


def test_security_http_bearer_no_credentials():

def test_incorrect_token():
    response = client.get("/items", headers={"Authorization": "Non-existent testtoken"})
    assert response.status_code == 401, response.text
    assert response.json() == {"detail": "Not authenticated"}


def test_token():
    response = client.get("/items", headers={"Authorization": "Bearer testtoken"})
    assert response.status_code == 200, response.text

def test_token():
    response = client.get("/items", headers={"Authorization": "Bearer testtoken"})
    assert response.status_code == 200, response.text
    assert response.json() == {"token": "testtoken"}


def test_incorrect_token():
    response = client.get("/items", headers={"Authorization": "Notexistent testtoken"})
    assert response.status_code == 200, response.text

        public void addHeader(String name, String value) {
            headers.put(name, value);
        }

        @Override
        public void setIntHeader(String name, int value) {
            headers.put(name, String.valueOf(value));
        }

        @Override
        public void addIntHeader(String name, int value) {
            headers.put(name, String.valueOf(value));
        }

        @Override

@app.get("/items/{item_id}")
async def read_item(item_id: str):
    if item_id not in items:
        raise HTTPException(
            status_code=404,
            detail="Item not found",
            headers={"X-Error": "Some custom header"},
        )
    return {"item": items[item_id]}


@app.get("/http-no-body-statuscode-exception")
async def no_body_status_code_exception():
    raise HTTPException(status_code=204)

    """
    Add or update header permalinks in specific pages of En docs.
    """
    for md_file in pages:
        add_permalinks_page(md_file, update_existing=update_existing)


@app.command()
def add_permalinks(update_existing: bool = False) -> None:
    """
    Add or update header permalinks in all pages of En docs.
    """