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18 lines
976 B
18 lines
976 B
.. _arch_overview_tcp_proxy: |
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TCP proxy |
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========= |
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Since Envoy is fundamentally written as a L3/L4 server, basic L3/L4 proxy is easily implemented. The |
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TCP proxy filter performs basic 1:1 network connection proxy between downstream clients and upstream |
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clusters. It can be used by itself as an stunnel replacement, or in conjunction with other filters |
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such as the :ref:`MongoDB filter <arch_overview_mongo>` or the :ref:`rate limit |
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<config_network_filters_rate_limit>` filter. |
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The TCP proxy filter will respect the |
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:ref:`connection limits <config_cluster_manager_cluster_circuit_breakers_max_connections>` |
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imposed by each upstream cluster's global resource manager. The TCP proxy filter checks with the |
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upstream cluster's resource manager if it can create a connection without going over that cluster's |
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maximum number of connections, if it can't the TCP proxy will not make the connection. |
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TCP proxy filter :ref:`configuration reference <config_network_filters_tcp_proxy>`.
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