53 lines
1.2 KiB
Nim
53 lines
1.2 KiB
Nim
# SPDX-License-Identifier: AGPL-3.0-only
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import httpclient
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type
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HttpPool* = ref object
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conns*: seq[AsyncHttpClient]
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var
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maxConns: int
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proxy: Proxy
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proc setMaxHttpConns*(n: int) =
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maxConns = n
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proc setHttpProxy*(url: string; auth: string) =
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if url.len > 0:
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proxy = newProxy(url, auth)
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else:
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proxy = nil
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proc release*(pool: HttpPool; client: AsyncHttpClient; badClient=false) =
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if pool.conns.len >= maxConns or badClient:
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try: client.close()
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except: discard
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elif client != nil:
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pool.conns.insert(client)
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proc acquire*(pool: HttpPool; heads: HttpHeaders): AsyncHttpClient =
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if pool.conns.len == 0:
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result = newAsyncHttpClient(headers=heads, proxy=proxy)
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else:
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result = pool.conns.pop()
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result.headers = heads
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template use*(pool: HttpPool; heads: HttpHeaders; body: untyped): untyped =
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var
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c {.inject.} = pool.acquire(heads)
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badClient {.inject.} = false
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try:
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body
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except ProtocolError:
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# Twitter closed the connection, retry
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body
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except BadClientError:
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# Twitter returned 503, we need a new client
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pool.release(c, true)
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badClient = false
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c = pool.acquire(heads)
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body
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finally:
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pool.release(c, badClient)
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