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A subsequent patch will teach struct packet_reader a new field that, if set, instructs it to interpret read data as multiplexed. This will create a dependency from pkt-line to sideband. To avoid a circular dependency, split recv_sideband() into 2 parts: the reading loop (left in recv_sideband()) and the processing of the contents (in demultiplex_sideband()), and move the former into pkt-line. This reverses the direction of dependency: sideband no longer depends on pkt-line, and pkt-line now depends on sideband. Signed-off-by: Jonathan Tan <jonathantanmy@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
29 lines
881 B
C
29 lines
881 B
C
#ifndef SIDEBAND_H
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#define SIDEBAND_H
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enum sideband_type {
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SIDEBAND_PROTOCOL_ERROR = -2,
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SIDEBAND_REMOTE_ERROR = -1,
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SIDEBAND_FLUSH = 0,
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SIDEBAND_PRIMARY = 1
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};
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/*
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* Inspects a multiplexed packet read from the remote. If this packet is a
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* progress packet and thus should not be processed by the caller, returns 0.
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* Otherwise, returns 1, releases scratch, and sets sideband_type.
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*
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* If this packet is SIDEBAND_PROTOCOL_ERROR, SIDEBAND_REMOTE_ERROR, or a
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* progress packet, also prints a message to stderr.
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*
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* scratch must be a struct strbuf allocated by the caller. It is used to store
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* progress messages split across multiple packets.
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*/
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int demultiplex_sideband(const char *me, char *buf, int len,
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struct strbuf *scratch,
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enum sideband_type *sideband_type);
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void send_sideband(int fd, int band, const char *data, ssize_t sz, int packet_max);
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#endif
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