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- blockdiag {
- orientation = portrait;
- begin[shape=beginpoint, description="on_request_start"];
- redirect[description="on_request_redirect"];
- end[shape=endpoint, description="on_request_end"];
- exception[shape=flowchart.terminator, description="on_request_exception"];
- //acquire_connection[description="Connection acquiring"];
- group header_timeout {
- label = "8. header_timeout";
- color = "#FFFF00";
- shape = line;
- style = dashed;
- headers_received;
- headers_sent;
- chunk_sent[description="on_request_chunk_sent"];
- }
- chunk_received[description="on_response_chunk_received"];
- begin -> begin_acquire_con;
- end_acquire_con -> headers_sent;
- headers_sent -> headers_received;
- headers_sent -> chunk_sent;
- chunk_sent -> chunk_sent [thick];
- chunk_sent -> headers_received;
- headers_received -> chunk_received;
- chunk_received -> chunk_received;
- chunk_received -> end [thick];
- headers_received -> redirect;
- headers_received -> end [thick];
- redirect -> headers_sent;
- chunk_received -> exception;
- chunk_sent -> exception;
- headers_sent -> exception;
- group acquire_con {
- label = "acquire_con (6. timeout)";
- color = "#77FF77";
- begin_acquire_con[shape=beginpoint];
- end_acquire_con[shape=endpoint];
- exception_acquire_con[shape=flowchart.terminator, description="Exception raised"];
- group queued_timeout {
- label = "2. queued_timeout";
- color = "#FF0000";
- shape = line;
- style = dashed;
- queued_start[description="on_connection_queued_start"];
- queued_end[description="on_connection_queued_end"];
- }
- group con_create_timeout {
- label = "3. con_create_timeout";
- color = "#FF0000";
- shape = line;
- style = dashed;
- create_start[description="on_connection_create_start"];
- create_end[description="on_connection_create_end"];
- //resolve_dns[description="DNS resolving"];
- group sock_connect_timeout {
- label = "5. sock_connect_timeout";
- color = "#FFFF00";
- shape = line;
- style = dashed;
- sock_connect[description="Connection establishment"];
- }
- group resolve_dns {
- label = "resolve_dns (4. timeout)";
- color = "#7777FF";
- begin_resolve_dns[shape=beginpoint];
- end_resolve_dns[shape=endpoint];
- exception_resolve_dns[shape=flowchart.terminator, description="Exception raised"];
- resolve_start[description="on_dns_resolvehost_start"];
- resolve_end[description="on_dns_resolvehost_end"];
- cache_hit[description="on_dns_cache_hit"];
- cache_miss[description="on_dns_cache_miss"];
- begin_resolve_dns -> cache_hit -> end_resolve_dns;
- begin_resolve_dns -> cache_miss -> resolve_start;
- resolve_start -> resolve_end -> end_resolve_dns;
- resolve_start -> exception_resolve_dns;
- }
- }
- reuseconn[description="on_connection_reuseconn"];
- begin_acquire_con -> reuseconn;
- begin_acquire_con -> create_start [thick];
- create_start -> begin_resolve_dns;
- end_resolve_dns -> exception_acquire_con;
- end_resolve_dns -> sock_connect;
- sock_connect -> exception_acquire_con;
- sock_connect -> create_end -> end_acquire_con;
- begin_acquire_con -> queued_start;
- queued_start -> queued_end;
- queued_end -> reuseconn;
- queued_end -> create_start;
- reuseconn -> end_acquire_con;
- }
- }
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